Prediction of Preterm Delivery Using Serum Ischemia Modified Albumin, Biglycan, and Decorin Levels in Women with Threatened Preterm Labor / Previsão de parto prematuro usando albumina modificada por isquemia sérica, biglicano e níveis de decorina em mulheres com ameaça de trabalho de parto prematuro

Abstract Objective The serum ischemia modified albumin (IMA), biglycan, and decorin levels of pregnant women who were hospitalized for threatened preterm labor were measured. Methods Fifty-one consecutive pregnant women with a single pregnancy between the 24th and 36th weeks with a diagnosis of threatened preterm labor were included in the present prospective cohort study. Results As a result of multivariate logistic regression analysis for predicting preterm delivery within 24 hours, 48 hours, 7 days, 14 days, ≤ 35 gestational weeks, and ≤ 37 gestational weeks after admission, area under the curve (AUC) (95% confidence interval [CI[) values were 0.95 (0.89-1.00), 0.93 (0.86-0.99), 0.91 (0.83-0.98), 0.92 (0.85-0.99), 0.82 (0.69-0.96), and 0.89 (0.80-0.98), respectively. In the present study, IMA and biglycan levels were found to be higher and decorin levels lower in women admitted to the hospital with threatened preterm labor and who gave preterm birth within 48 hours compared with those who gave birth after 48 hours. Conclusion In pregnant women admitted to the hospital with threatened preterm labor, the prediction preterm delivery of the combined model created by adding IMA, decorin, and biglycan in addition to the TVS CL measurement was higher than the TVS CL measurement alone. Clinical trial registration The present trial was registered at ClinicalTrials.gov, number NCT04451928.

Resumo Objetivo Medir os níveis séricos de albumina modificada por isquemia (IMA), biglicano e decorina de gestantes hospitalizadas por ameaça de parto prematuro. Métodos Cinquenta e uma mulheres grávidas consecutivas com uma única gravidez entre a 24ᵃ e a 36ᵃ semanas com diagnóstico de ameaça de trabalho de parto prematuro foram incluídas no presente estudo de corte prospectivo. Resultados Como resultado da análise de regressão logística multivariada para prever parto prematuro dentro de 24 horas, 48 horas, 7 dias, 14 dias, ≤ 35 semanas gestacionais e ≤ 37 semanas gestacionais após a admissão, área sob a curva (AUC) (95% de confiança os valores de intervalo [CI[) foram 0,95 (0,89-1,00), 0,93 (0,86-0,99), 0,91 (0,83-0,98), 0,92 (0,85-0,99), 0,82 (0,69-0,96) e 0,89 (0,80-0,98), respectivamente. No presente estudo, os níveis de IMA e biglican foram maiores e os níveis de decorin menores em mulheres admitidas no hospital com ameaça de trabalho de parto prematuro e que tiveram parto prematuro em 48 horas em comparação com aquelas que deram à luz após 48 horas. Conclusão Em gestantes admitidas no hospital com ameaça de trabalho de parto prematuro, a predição de parto prematuro do modelo combinado criado pela adição de IMA, decorin e biglican, além da medição do TVS CL, foi maior do que a medição do TVS CL isoladamente. Registro do ensaio clínico O presente ensaio foi registrado em ClinicalTrials.gov, número NCT04451928.

Sociodemographic determinants and mortality of premature newborns in a medium and low-income population in Colombia, 2017-2019 / Factores determinantes sociodemográficos y de mortalidad en recién nacidos prematuros en población de medianos y bajos ingresos en Colombia, 2017-2019

Introduction. The birth of premature babies is a public health problem with a high impact on infant morbidity and mortality. About 40% of mortality in children under five years occurs in the first month of life. Objective. To identify the association between maternal sociodemographic factors, premature birth, and mortality in newborns under 37 weeks in Santiago de Cali, 2017-2019. Materials and methods. We conducted a descriptive, cross-sectional study. We evaluated the records of Cali's Municipal Public Health Office. We calculated the crude and adjusted odd ratios and confidence intervals (95%) using the logistic regression model, data processing in Stata 16, and georeferencing the cases in the QGIS software. Results. From 2017 to 2019, premature babies in Cali corresponded to 11% of births. Poor prenatal care increased 3.13 times the risk of being born before 32 weeks (adjusted OR = 3.13; 95% CI = 2.75 - 3.56) and 1.27 times among mothers from outside the city (adjusted OR = 1.27; 95% CI = 1.15-1.41). Mortality was 4.29 per 1,000 live births. The mortality risk in newborns weighing less than 1,000 g increased 3.42 times (OR = 3.42; 95% CI = 2.85-4.12), delivery by cesarean section in 1.46 (OR = 1.46; CI 95% = 1.14-1.87) and an Apgar score - five minutes after birth- lower than seven in 1.55 times (OR = 1.55; CI 95% = 1.23-1.96). Conclusions. We found that less than three prenatal controls, mothers living outside Cali, afro-ethnicity, and cesarean birth were associated with prematurity of less than 32 weeks. We obtained higher mortality in newborns weighing less than 1,000 g.

Introducción. El nacimiento de bebés prematuros es un problema de salud pública con gran impacto en la morbimortalidad infantil: cerca del 40 % de las muertes de niños menores de cinco años sucede en el primer mes de vida. Objetivo. Identificar la asociación entre los factores sociodemográficos maternos, el parto prematuro y la mortalidad en recién nacidos menores de 37 semanas en Santiago de Cali, 2017-2019. Materiales y métodos. Se hizo un estudio descriptivo transversal. Se evaluaron los registros de la Secretaría de Salud Pública Municipal de Cali. Se calcularon las razones de probabilidad y los intervalos de confianza (95 %) crudos y ajustados mediante el modelo de regresión logística, en tanto que los datos se procesaron en Stata 16 y los casos se georreferenciaron con el programa QGIS. Resultados. Entre el 2017 y el 2019, los nacimientos de bebés prematuros en Cali correspondieron al 11 %. El control prenatal deficiente aumentó 3,13 veces el riesgo de nacer con menos de 32 semanas (OR ajustado = 3,13; IC95% = 2,75-3,56) y, en madres de municipios fuera de la ciudad, 1,27 veces (OR ajustado = 1,27; IC95% = 1,15-1,41). La mortalidad fue de 4,29 por 1.000 nacidos vivos. Nacer con un peso menor de 1.000 g aumentó el riesgo de mortalidad en 3,42 veces (OR = 3,42; IC95% = 2,85-4,12) y, un puntaje Apgar menor de siete a los cinco minutos del nacimiento, en 1,55 veces (OR=1,55; IC95% = 1,23-1,96). Conclusiones. Se encontró que tener menos de tres controles prenatales, la procedencia de la madre fuera de Cali, ser afrodescendiente y el parto por cesárea, estaban asociados significativamente con la prematuridad de menos de 32 semanas. Hubo mayor mortalidad en los recién nacidos con menos de 1.000 gramos al nacer.

Ruptura prematura de membranas ovulares / Premature rupture of ovular membranes

La ruptura prematura de las membranas ovulares se define como la pérdida de la integridad del amnios y corion antes del inicio del trabajo de parto, afecta el 3 % de los embarazos, causa un tercio de los partos pretérminos, los cuales ocupan el 10,49 % de los nacimientos y es el origen de altos índices de morbimortalidad perinatal. En la actualidad, el manejo de esta patología se orienta principalmente en evitar los factores de riesgo, hacer un diagnóstico adecuado, determinar la edad gestacional en que ocurre, realizar el monitoreo exhaustivo del bienestar materno-fetal y en decidir el momento idóneo de finalización de la gestación para minimizar sus complicaciones. Debido a la compleja y lábil estructura histológica de las membranas ovulares, se ha dejado a un lado el tratamiento directo de la entidad el cual sería sellar o reparar el defecto en sí. En los últimos años, numerosos estudios y protocolos clínicos de prestigiosos centros asistenciales han servido como guía para el manejo de esta entidad, pero en muy pocos se observa una terapia destinada a la reparación de dichas membranas o en sellar tal defecto. Las evidencias científicas demuestran que la regeneración y reparación de las membranas es lenta y compleja y los tratamientos propuestos para reparar o sellar su defecto no han gozado de la aceptación científica para su aprobación, sin embargo, el uso del parche hemático transvaginal endocervical autólogo luce como una alternativa terapéutica prometedora(AU)

The premature rupture of the ovular membranes is defined as the loss of the integrity of the amnion and chorion before the on set of labor, affects 3% of pregnancies, causes athird of preterm births which occupy 10,49% of births and is the origin of high rates of perinatal morbidity and mortality. At present, the management of this pathology is mainly oriented towards avoiding risk factors, making an adequate diagnosis, determining the gestational age in which it occurs, carrying out exhaustive monitoring of maternal-fetal well-being and deciding the ideal moment to end the treatment. Pregnancy to minimizeits complications. Due to the complex and labile histological structure of the ovular membranes, the direct treatment of the entity has been set a side, which would be to seal or repairthe defect it self. In recent years, numerous studies and clinicalprotocols from prestigious health care centers have served as aguide for the management of this entity, but very few have observed a therapy aimed at repairing said membranes or sealing such a defect. Scientific evidence shows that the regeneration and repair of the membranes is slow and complex and the treatment sproposed to repair or seal their defect have not enjoyed scientific acceptance for their approval, how ever, the use of the autologous endocervical transvaginal blood patch looks like a promising therapeutic alternative(AU)

Perfusão arterial reversa gemelar: revisão da literatura / Twin reverse arterial perfusion: literature review

A perfusão arterial reversa gemelar é uma anormalidade rara que pode ocorrer em gestações gemelares monocoriônicas. Consiste em uma alteração na circulação fetoplacentária, com desvio de sangue de um dos gemelares para o outro, por meio de anastomoses arterioarteriais e venovenosas na superfície placentária e anastomoses arteriovenosas em áreas de circulação placentária compartilhada. O feto bombeador pode desenvolver insuficiência cardíaca devido ao aumento do débito cardíaco, e o feto receptor, perfundido por sangue pobre em oxigênio por meio do fluxo reverso, é severamente malformado, incompatível com a vida extrauterina. Este artigo apresenta o caso de uma gestação gemelar monocoriônica diamniótica, com manejo clínico conservador. O objetivo é relatar um caso de complicação rara de gestações monozigóticas e revisar condutas para diagnóstico e manejo adequado.(AU)

Twin reverse arterial perfusion is a rare abnormality that can occur in monochorionic twin pregnancies. It consists of an alteration in the fetal-placental circulation, with blood diversion from one of the twins to the other, through arterio-arterial and veno- venous anastomosis on the placental surface and arterio-venous anastomosis in areas of shared placental circulation. The pumping fetus may develop heart failure due to increased cardiac output, and the recipient fetus, perfused by oxygen-poor blood through reverse flow, is severely malformed, incompatible with extrauterine life. This article presents the case of a monochorionic diamniotic twin pregnancy, with conservative clinical management. The objective is to report a case of rare complication of monozygotic pregnancies and review procedures for diagnosis and adequate management.(AU)

Association between gestational diabetes mellitus and preterm birth subtypes / 中华流行病学杂志

Objective: To investigate the association between gestational diabetes mellitus (GDM) and preterm birth subtypes. Methods: Based on the cohort of pregnant women in Anqing Prefectural Hospital, the pregnant women who received prenatal screening in the first or second trimesters were recruited into baseline cohorts; and followed up for them was conducted until delivery, and the information about their pregnancy status and outcomes were obtained through electronic medical record system and questionnaire surveys. The log-binomial regression model was used to explore the association between GDM and preterm birth [iatrogenic preterm birth, spontaneous preterm birth (preterm premature rupture of membranes and preterm labor)]. For multiple confounding factors, the propensity score correction model was used to compute the adjusted association. Results: Among the 2 031 pregnant women with a singleton delivery, the incidence of GDM and preterm birth were 10.0% (204 cases) and 4.4% (90 cases) respectively. The proportions of iatrogenic preterm birth and spontaneous preterm birth in the GDM group (n=204) were 1.5% and 5.9% respectively, while the proportions in non-GDM group (n=1 827) were 0.9% and 3.2% respectively, and the difference in the proportion of spontaneous preterm birth between the two groups was significant (P=0.048). Subtypes of spontaneous preterm were further analyzed, and the results showed that the proportions of preterm premature rupture of membranes and preterm labor in the GDM group were 4.9% and 1.0% respectively, while the proportions in the non-GDM group were 2.1% and 1.1% respectively. It showed that the risk of preterm premature rupture of membranes in GDM pregnant women was 2.34 times (aRR=2.34, 95%CI: 1.16-4.69) higher than that in non-GDM pregnant women. Conclusions: Our results showed that GDM might increase the risk of preterm premature rupture of membranes. No significant increase in the proportion of preterm labor in pregnant women with GDM was found.

The Use of Mid-Pregnancy Cervical Length to Predict Preterm Birth in Brazilian Asymptomatic Twin Gestations / O uso da medida do colo uterino no segundo trimestre de gestantes brasileiras como preditor de prematuridade na gestação gemelar

Abstract Objective To describe a reference curve for cervical length (CL) in mid-trimester twin gestations using transvaginal ultrasound (TVU) and to investigate whether short CL increases spontaneous preterm birth (sPTB) in asymptomatic twin pregnancies. Methods This was a prospective cohort study performed at 17 outpatient antenatal facilities of Brazil with women at 18 0/7 to 22 6/7 weeks of gestation who participated in a randomized clinical trial screening phase (P5 trial) between July 2015 and March 2019. TVU was performed to provide CL measurement in all screened women. Almost all women with CL ≤ 30 mm received vaginal progesterone 200mg/day and they were also randomized to receive cervical pessary or not. We considered data from the CL distribution among asymptomatic twin pregnancies and analyzed CL and its association with PTB generating receiver operating characteristics (ROC) curves and Kaplan-Meier curves. Results A total of 253 pregnant women with twins were included in the distribution curve. The mean CL was 33.7 mm and median was 35.5mm. The 10th percentile was 17.8mm. We identified a PTB rate of 73.9% (187/253) with 33.6% of sPTB < 37 (85/253) and 15% (38/253) of sPTB < 34 weeks. The best cutoff point to predict sPTB < 37 was 24.15 mm. However, the ROC curve showed a poor performance (0.64). The Kaplan-Meier survival curves identified that only CL values ≤ 20mm were associated to sPTB < 34 weeks. Conclusion A cutoff point of CL ≤ 20 mm can be interesting point to identify short cervix in Brazilian twin pregnancies. However, in Brazilian asymptomatic twin pregnancies, CL does not show a good performance to predict PTB.

Resumo Objetivo Descrever uma curva de referência da medida do colo uterino no Segundo trimestre de gestações gemelares através de ultrassonografia transvaginal (TVU) e investigar a correlação entre a medida do colo uterino (CL) e o parto prematuro espontâneo (sPTB) em pacientes assintomáticas. Métodos Foi realizado uma coorte prospectiva multicêntrica em 17 centros de referência do Brasil com mulheres com gestação gemelar entre 18 0/7 a 22 6/7 semanas de gestação que participaram da primeira fase de um ensaio clínico randomizado (P5 trial) entre Julho/2015 a Março/2019. TVU foi realizada para obter a medida do colo uterino em todas as mulheres. A maioria das mulheres com CL ≤30 mm receberam progesterona por via vaginal 200mg/dia e estas foram randomizadas para receber ou não um pessário cervical. Este estudo considerou dados da medida do colo uterino entre mulheres assintomáticas, desenvolvendo uma curva de referência para gestantes gemelares e sua capacidade de predição do parto prematuro através de curva ROC (receiver operating characteristics) e curvas de sobrevida de Kaplan-Meyer. Resultados O total de 253 gestantes foram incluídos no estudo, A média do CL foi 33.7mm e a mediana 35.5mm. O Percentil 10 do CL foi 17.8mm. A taxa de parto prematuro foi de 73.9% (187/253) com 33.6% de sPTB < 37 (85/253) e 15% (38/253) de sPTB < 34 semanas. O melhor ponto de corte para predizer sPTB < 37 foi 24.15 mm, entretanto a curva ROC demonstrou baixa performance (0.64). A curva de Kaplan-Meier para sPTB identificou que apenas CL ≤ 20 mm estavam associados a sPTB < 34 semanas. Conclusão Colo uterino ≤20 mm pode ser um interessante ponto de corte para identificar colo curto entre gestações gemelares assintomáticas brasileiras. Entretanto, a medida do colo uterino não apresentou boa performance para predizer parto prematuro.

Prevalência e tendência temporal da prematuridade no Brasil antes e durante a pandemia de covid-19: análise da série histórica 2011-2021 / Prevalencia y tendencia temporal de la prematuridad en Brasil antes y durante la pandemia de COVID-19: análisis de la serie histórica de 2011 a 2021 / Prevalence and temporal trend of prematurity in Brazil before and during the COVID-19 pandemic: a historical time series analysis, 2011-2021

Objetivo: mensurar a prevalência de prematuridade segundo macrorregião brasileira e características maternas, nos últimos 11 anos; comparar as proporções durante a pandemia de covid-19 (2020-2021) com as da série histórica (2011-2019). Métodos: estudo ecológico, com dados do Sistema de Informações sobre Nascidos Vivos; prevalências calculadas segundo ano, macrorregião e características maternas; análise da série temporal pelo modelo de Prais-Winsten. Resultados: a prevalência de prematuridade em 2011-2021 foi de 11,1%, estável; a média no período pandêmico 11,3% (IC95% 11,2;11,4%) assemelhou-se à do período-base 11,0% (IC95% 10,6;11,5%); a região Norte (11,6%) apresentou a maior proporção entre 2011 e 2021; gestação gemelar (56,3%) e gestantes com 4-6 consultas de pré-natal (16,7%) apresentaram tendência crescente (p-valor < 0,001); observou-se maior prevalência para extremos de idade materna, gestantes de raça/cor da pele preta, indígenas e menor escolaridade. Conclusão: maior prematuridade nas gestantes socialmente vulneráveis, em gestações gemelares e no Norte; prevalência estável, sem diferença entre períodos.

Objetivo: medir la prevalência de prematuridad de 2011 a 2021, según macrorregión brasileña y características maternas, comparando los años de pandemia de COVID-19, con 2011-2019. Métodos: estudio ecológico basado en el Sistema de Información de Nacimientos Vivos. Prevalencias calculadas según año, macrorregión y características maternas. Análisis de series temporales por el modelo generalizado de Prais-Winsten. Resultados: la prematuridad entre 2011-2021 fue 11,1%, con estabilidade; la media de en el periodo de la pandemia 11,3% (IC95% 11,2;11,4) se asemejó a la media de referencia 11,0% (IC95% 10,6;11,5). Región del norte tuvo la proporción más alta entre 2011 y 2021. Embarazo gemelar y mujeres con 4-6 visitas prenatales tuvieron tendencia al aumento. Prevalencias más elevadas correspondían a la edad materna extrema, mujeres embarazadas negras e indígenas y niveles de educación más bajos. Conclusión: mayor prematuridad en situación de vulnerabilidad social, embarazos gemelares y de la Región Norte. Proporciones se mantuvieron estables, sin diferencias entre períodos.

Objective: to measure the prevalence of prematurity according to the Brazilian macro-regions and maternal characteristics over the past 11 years; to compare the proportions during the COVID-19 pandemic (2020-2021) with those of the historical series (2011-2019). Methods: this was an ecological study, with data from the Live Birth Information System; the prevalence was calculated according to year, macro-region and maternal characteristics; time series analysis was performed using Prais-Winsten regression model. Results: the prevalence of preterm birth in 2011-2021 was 11.1%, stable; the average in the pandemic period 11.3% (95%CI 11.2;11.4%) was similar to that of the base period 11.0% (95%CI 10.6;11.5%); the North region (11.6%) showed the highest proportion between 2011 and 2021; twin pregnancy (56.3%) and pregnant women who had 4-6 prenatal care visits (16.7%) showed an increasing trend (p-value < 0.001); the highest prevalence was observed for extremes of maternal age, pregnant women of Black race/skin color, indigenous women and those with lower level of education. Conclusion: preterm birth rates were highest for socially vulnerable pregnant women, twin pregnancies and in the North; stable prevalence, with no difference between periods.

Estimates of avoided costs attributed to a short cervix screening program to prevent preterm birth from the perspective of the Unified Health System (SUS) / Estimativa de custos evitados atribuídos a um programa de rastreio de colo curto para prevenção da prematuridade na perspectiva do SUS

ABSTRACT OBJECTIVE To perform an economic cost analysis of the implementation of a short cervix screening program to reduce preterm birth in singleton pregnancies in a short-term time horizon. METHODS We performed a cost-benefit economic analysis using the P5 trial database, a randomized multicenter clinical trial for prevention of preterm birth. Data collection was conducted from July 2015 to March 2019 in 17 different Brazilian hospitals. We conducted a cost analysis for universal cervical screening in singleton pregnancies between 18 weeks and 22 weeks plus 6 days. In subjects with a cervical length ≤ 25 mm, the analysis incorporated the costs of administering 200 mg/day of vaginal progesterone prophylactically until 36 weeks gestation. These findings were subsequently compared with the economic implications of forgoing cervical screening. The time horizon comprised from birth to 10 weeks postpartum. The outcome was measured monetarily in Brazilian real (R$) from the perspective of the Unified Health System. RESULTS Among 7,844 women, 6.67% (523) had a cervix ≤ 25 mm. The cost of screening with transvaginal ultrasound and vaginal progesterone for prevention of births with < 34 weeks was estimated at R$ 383,711.36, while non-screening generated an estimated additional cost of R$ 446,501.69 (related to the 29 non-screened preterm deliveries). Thus, screening and prophylaxis would generate a final cost reduction of R$ 62,790.33, constituting a possible cost-benefit strategy. CONCLUSION Universal short cervix screening for preterm birth has lower costs compared to non-screening within a short-term time horizon, which suggests an interesting benefit-cost ratio. Future studies should consider the cost-effectiveness of prophylactic treatment using sensitivity analyses in different scenarios within the Brazilian health system, as well as analyses that consider the long-term costs associated with preterm births, to robustly justify the implementation of a short cervix screening program.

RESUMO OBJETIVO Realizar uma análise econômica de custo da implementação de um programa de rastreio de colo curto para redução da prematuridade em gestações únicas num horizonte temporal de curto prazo. MÉTODOS Realizamos uma análise econômica do tipo custo-benefício utilizando o banco de dados do P5 trial, um ensaio clínico multicêntrico randomizado para prevenção da prematuridade. A coleta de dados ocorreu de julho de 2015 a março de 2019 em 17 diferentes hospitais do Brasil. Comparamos os custos do rastreamento universal em mulheres com gestação única de 18 a 22 semanas e 6 dias associado à progesterona vaginal profilática 200 mg/dia até 36 semanas naquelas com colo ≤ 25 mm com os do não rastreamento. O horizonte temporal foi do nascimento até 10 semanas após o parto. O desfecho foi medido monetariamente em real brasileiro (R$) na perspectiva do Sistema Único de Saúde. RESULTADOS Entre 7.844 mulheres, 6,67% (523) apresentaram colo ≤ 25mm. O custo do rastreio com a ultrassonografia transvaginal mais a progesterona vaginal para prevenção de nascimentos < 34 semanas foi estimado em R$ 383.711,36, enquanto o não rastreamento gerou custo adicional estimado de R$ 446.501,69 (relacionado aos 29 partos prematuros não rastreados). Assim, o rastreamento mais a profilaxia geraria uma redução de custo final de R$ 62.790,33, apresentando-se como uma possível estratégia de custo-benefício. CONCLUSÃO O rastreamento universal de colo curto para prematuridade apresenta menores custos em relação ao não rastreamento dentro de um horizonte temporal de curto prazo, o que sugere uma interessante relação de custo versus benefício. Novos estudos que considerem a custo-efetividade do tratamento profilático utilizando-se de análises de sensibilidade em diferentes cenários dentro do sistema de saúde brasileiro, assim como análises que considerem os custos de longo prazo atrelados ao nascimento prematuro, são necessários para justificar com robustez a implementação de um programa de rastreamento.

Comportamiento del Parto Pretérmino durante un período de crisis socioeconómica en los diferentes sectores sociales en Uruguay / Pretermina Delivery Behavior During a period of socioeconomic crisis in the different social sectors in Uruguay

Introducción : El parto de pretérmino (PP) es un síndrome complejo que se da en los diferentes sectores sociales con factores asociados diversos. En Uruguay los subsectores de atención -público y privado del Sistema nacional integrado de salud (SNIS) diferencian a los sectores sociales de acuerdo al poder adquisitivo y los determinantes sociales adversos. La prevalencia del PP ha variado en ambos subsectores en la última década de acuerdo a múltiples circunstancias, sin embargo, las crisis socioeconómicas afectan de manera diferente a los diferentes sectores sociales. Se puede evaluar esto por el impacto de la crisis socio económica aguda que afectó a las embarazadas en el periodo de la parapandemia COVID 19 antes del comienzo de la 1era ola de infecciones por el SARS - Cov2 en Uruguay. Objetivos: Analizar la prevalencia del PP de acuerdo al subsistema de asistencia de las mujeres embarazadas (público o privado) durante el periodo marzo - octubre 2020. Describir las principales características diferenciales de estas 2 poblaciones y su eventual relación con la prevalencia del PP. Metodología: estudio descriptivo de nacimientos pretérminos y caracterización de estos embarazos en los dos subsectores de salud, durante el 15 de marzo y el 30 de septiembre del 2020, mediante análisis de la base de datos nacional del SIP. Resultados : La incidencia de PP fue 11.4% en el subsector público y 9,6% en el sector privado, lo cual es significativo estadísticamente. El perfil de las madres de pretérmino en el subsector público tuvo mayor incidencia de adolescentes (22,3% vs 5,0%), consumo de alcohol (2,2% vs 0,7%) y violencia de género (1,3% vs 0,5%), mientras que en el subsector privado mayor incidencia de madres añosas (28,4% vs 18,2%), patologías maternas (85,9% vs 65,8%) y embarazo múltiple (18,8% vs 11,0%). Conclusiones: El perfil de la mujer asistida en el sector privado que tiene un PP es diferente al del sector público, lo que sugiere la existencia de 2 modelos de PP: el del sector público, relacionado con un medio socio económico adverso y vulneración de derechos, y otro, el del sector privado, donde no se aprecian estas vulneraciones de derechos. Esto tiene implicancias en el abordaje fisiopatológico, preventivo, diagnóstico y terapéutico del PP.

Introduction. Pretérmina delivery (PP) is a complex syndrome that occurs in different social sectors with diverse associated factors. In Uruguay, care subsectors -public and private from the National Integrated Health System (SNIS) differentiate social sectors according to purchasing power and adverse social determinants. The prevalence of the PP has varied in both subsectors in the last decade according to multiple circumstances, however, socioeconomic crises affect differently from the different social sectors. This can be evaluated due to the impact of the acute socio -economic crisis that affected the pregnant women in the Covid 19 parapandemics period before the start of the 1st wave of SARS - COV2 infections in Uruguay. Objectives: Analyze the prevalence of the PP according to the assistance subsystem of pregnant women (public or private) during the March - October 2020 period. Describe the main differential characteristics of these 2 populations and their eventual relationship with the prevalence of the PP. Methodology: Descriptive study of preterm births and characterization of these pregnancies in the two health subsectors, during March 15 and September 30, 2020, through analysis of the National Database of the SIP. Results: The incidence of PP was 11.4% in the public subsector and 9.6% in the private sector, which is statistically significant. The profile of preterm mothers in the public subsector had a greater incidence of adolescents (22.3% vs 5.0%), alcohol consumption (2.2% vs 0.7%) and gender violence (1.3 % vs 0.5%), while in the private subsector greater incidence of old mothers (28.4% vs. 18.2%), maternal pathologies (85.9% vs 65.8%) and multiple pregnancy (18, 8% vs 11.0%). Conclusions: The profile of the assisted woman in the private sector that has a PP is different from the public sector, which suggests the existence of 2 PP models: that of the public sector, related to an adverse socio -economic medium and violation of rights , and another, that of the private sector, where these violations of rights are not appreciated. This has implications in the pathophysiological, preventive, diagnosis and therapeutic approach of the PP.

Parto y puerperio durante la pandemia por COVID-19: experiencia de las pacientes y frecuencia de prematuridad / Childbirth and puerperium during the COVID-19 pandemic: patient experience and frequency of prematurity

Objetivo: Evaluar la percepción de las madres que tuvieron su parto durante la pandemia COVID en relación a la obligación de no recibir visitas en su puerperio, y cuantificar la frecuencia de prematuridad que otros centros del mundo mostraron que se redujo durante la pandemia. Método: Estudio observacional retrospectivo con encuestas realizadas entre el 1 de septiembre y el 31 diciembre 2020, y análisis de estadísticas locales de la Unidad de Maternidad y Neonatología. Resultados: Sobre el 90% de las madres que contestaron la encuesta afirmó haber descansado mejor y preferir un retorno a las visitas con horarios reducidos. La frecuencia de prematuridad se redujo significativamente en nuestra institución (8,08% entre 2014 y 2019 vs. 1,6% en 2020). Conclusiones: La mayoría de las puérperas prefiere un horario reducido para visitas en el posparto. Este hallazgo y la caída en la frecuencia de prematuridad obligan a reflexionar sobre nuestro cuidado prenatal actual.

Objective: To evaluate the perception of mothers who gave birth during the COVID pandemic in relation to the obligation not to receive visits during the puerperium, and to quantify the frequency of prematurity that other centers in the world showed decreased during the pandemic. Method: Retrospective observational study with surveys conducted between September 1st and December 31, 2020, and analysis of local statistics from the Maternity and Neonatal Unit. Results: Over 90% of the mothers who answered the survey stated that they had rested better and preferred a return to visits with reduced hours. The frequency of prematurity was signficantly reduced in our institution ((8.08% between 2014 and 2019 vs 1.6% in 2020). Conclusions: Most postpartum women prefer a reduced schedule for pospartum visits. This finding and the drop in the frequency of prematurity force us to reflect on our current prenatal care.

Guia practica clinica para el manejo de parto pretermino / Clinical practice guide for the management of preterm birth

El parto pretérmino en la región centroamericana tiene variaciones en cada país, así como la mortalidad perinatal neonatal y materna que se deriva de la condición. La atención adecuada sigue siendo una barrera en las zonas con más limitaciones en los servicios y el personal sanitario disponible. El parto pretérmino es considerado un problema con implicaciones sociales y económicas que produce impacto a corto, mediano y largo plazo (Goldenberg, 2012). El 75% de las complicaciones que genera conllevan a un aumento en la mortalidad infantil. La mayoría de sus factores de riesgo son considerados como prevenibles con la implementación de medidas sencillas y económicas (WHO, 2015). La investigación clínica de esta condición, en una gran mayoría, se ha generado en países de alto ingreso (Opiyo, 2017) 1 . Algunas veces se desconocen los resultados de algunas intervenciones en condiciones de recursos limitados. Esta guía presenta y pretende abordar algunas de estas limitaciones. También alerta sobre algunas intervenciones que pueden producir más problemas y dificultades si se implementan, al considerar los recursos disponibles en los lugares donde se desarrollaron las investigaciones que generaron la evidencia y hacer la comparación con la realidad de los países de Centroamérica en donde se usará la evidencia. Por otra parte, para cada recomendación que en este instrumento se facilita, los resúmenes de evidencia consideran las efectividades clínicas y los efectos adversos cuando han estado disponibles.

Impacto da pandemia por COVID-19 na prevalência de casos de prematuridade / Impacto de la pandemia de COVID-19 en la prevalencia de casos de prematuridad / Impact of the COVID-19 pandemic on the prevalence of prematurity cases

Objetivo: analisar a prevalência da prematuridade no contexto da pandemia. Método: estudo transversal, retrospectivo e descritivo, desenvolvido na maternidade de referência do estado do Piauí. Resultados: 46,7% dos prontuários foram do ano de 2020 e 53,3% do ano de 2021. Houve 79% para gravidez única, parto cesáreo 59,1% e líquido amniótico claro 53%. O perfil clínico do RN em relação ao sexo, 47% eram do sexo feminino e 35 % do masculino. Médias: peso de 2462g, perímetro cefálico 34.36cm, torácico 32.58 cm, e comprimento de 48.02 cm. Considerando essa análise no ano de 2020 e 2021 foram contabilizados 21,1% RN com idade gestacional identificando uma prematuridade ao nascer e, 78,9% com idade gestacional dentro dos valores para pós termo. Conclusão: Os índices de prematuridade estão acima do esperado (21,1%), novas pesquisas com amostras mais importantes e melhor delineamento de métodos são necessárias para ampliar o escopo da discussão.(AU)

Objective: to analyze the prevalence of prematurity in the context of the pandemic. Method: a cross-sectional, retrospective and descriptive study, carried out at a reference maternity hospital in the state of Piauí. Results: 46.7% of the medical records were from 2020 and 53.3% from 2021. There were 79% for singleton pregnancy, cesarean delivery 59.1% and clear amniotic fluid 53%. The clinical profile of the NB in relation to sex, 47% were female and 35% male. Averages: weight of 2462g, head circumference 34.36cm, thoracic circumference 32.58cm, and length of 48.02cm. Considering this analysis, in 2020 and 2021, 21.1% of newborns with gestational age were identified as prematurity at birth, and 78.9% with gestational age within the values for post-term. Conclusion: Prematurity rates are higher than expected (21.1%), new research with more important samples and better method design are necessary to broaden the scope of the discussion (AU)

Objetivo: analizar la prevalencia de la prematuridad en el contexto de la pandemia. Método: estudio transversal, retrospectivo y descriptivo, desarrollado en la maternidad de referencia del estado de Piauí. Resultados: El 46,7% de los registros fueron del año 2020 y el 53,3% del año 2021. Hubo un 79% por embarazo único, parto por cesárea un 59,1% y líquido amniótico claro un 53%. El perfil clínico del RN en relación al sexo, el 47% eran del sexo femenino y el 35% del masculino. Promedios: peso de 2462 g, perímetro cefálico 34,36 cm, perímetro torácico 32,58 cm y longitud de 48,02 cm. Considerando este análisis, en 2020 y 2021, el 21,1% de los recién nacidos con edad gestacional fueron identificados como prematuros al nacer, y el 78,9% con edad gestacional dentro de los valores para postérmino. Conclusión: Las tasas de prematuridad son más altas de lo esperado (21,1 %), se necesitan nuevas investigaciones con muestras más importantes y un mejor diseño de métodos para ampliar el alcance de la discusión(AU)

Parto Prematuro: Tratamiento con nifedipino versus atosiban. Revisión Bibliográfica Teórica / Preterm Labor: nifedipine vs atosiban treatment. Bilbiographic theoretical review

Introducción: La amenaza de parto pretérmino es un problema de salud pública mundial y nacional. La prematuridad viene acompañada de complicaciones como inmadurez pulmonar y lesiones del sistema nervioso central, que requieren de tratamiento oportuno.Objetivo: Establecer una comparación objetiva de los resultados del tratamiento de la ame-naza de parto prematuro, mediante el uso de Nifedipina o Atosiban, realizando una revisión teórica actualizada del tema, con el propósito de ofrecer a la comunidad científica, una he-rramienta de consulta, sobre un tema frecuente y de alto riesgo materno fetal.Materiales y Métodos: Se realizó una búsqueda bibliográfica en las bases de datos: Google Scholar, Pubmed, Wiley Online Library, Biomed, Scopus, Medes, Medline, Pro Quest, Gale, Scopus, y ScIELO, Se incluyeron artículos publicados en revistas indexadas de alto impacto, en los últimos 5 años. Se valoró la calidad de los artículos incluidos, utilizando la metodología de Sacket, y el riesgo de sesgo, según la metodología Cochrane. Resultados: Se observó un consenso entre los autores consultados en que no existen dife-rencias significativas en el efecto tocolítico de atosiban y nifedipino Conclusiones:La literatura académica parece coincidir en que la efectividad de atosiban y ni-fedipino como agentes tocolíticos es similar, con ambos medicamentos se consigue prolongar el embarazo con riesgo de parto pretérmino, que es el propósito fundamental de la tocolisis.

Background: The threat of preterm birth is a global and national public health problem. Prematurity is linked to complications such as pulmonary immaturity and central nervous system lesions, which require timely treatment. Objective: To perform an objective comparison of the results of the treatment of the threat of premature delivery, using nifedipine or atosiban, carrying out an updated theoretical review of the subject, to offer the scientific community a tool for research on a frequent subject of high maternal and fetal risk. Materials y Methods: There was a bibliographic search in specialized databases. Articles published in high impact indexed journals in the last 5 years were included. The quality of the articles included was assessed, using the Sacket methodology, and the risk of bias, accor-ding to the Cochrane methodology. Results: There was an agreement among the authors consulted there are no significant differences in the tocolytic effect of atosiban and nifedipine. Conclusions: The academic literature seems to agree that the effectiveness of atosiban and nifedipine as tocolytic agents is similar, with both drugs prolonging pregnancy with the risk of preterm delivery, which is the fundamental purpose of tocolysis.

Análisis de costos de la detección de microglobulina alfa 1 placentaria en el abordaje de la sospecha de amenaza de parto pretérmino / Cost analysis of the alpha 1 placental microglobulin measurement as screening on suspected preterm labor

Objetivo: identificar el potencial beneficio económico de implementar la medición de microglobulina alfa 1 placentaria en las usuarias con sospecha de amenaza de parto pretérmino que acceden al Servicio de Emergencias del Hospital de las Mujeres Dr. Adolfo Carit Eva, como mecanismo para la reducción del impacto en la mortalidad maternoinfantil y optimizar recursos económicos en la Caja Costarricense de Seguro Social. Métodos: estudio económico, de enfoque cuantitativo-retrospectivo, con diseño transversal. Se consultaron fuentes secundarias del Departamento de Registros Médicos y Estadística del Hospital de las Mujeres Dr. Adolfo Carit Eva y se calculó el costo de atención de las pacientes hospitalizadas por diagnóstico de "trabajo de parto falso antes de las 37 semanas completas de gestación", según la Clasificación Estadística Internacional de Enfermedades y Problemas Relacionados con la Salud, décima revisión (CIE-10), en comparación con el hipotético escenario de que, en el mismo evento de salud, se implemente la medición cualitativa de microglobulina alfa 1 placentaria. Para el análisis de los datos se determinaron los costos tanto individuales como colectivos en pruebas diagnósticas de control, así como el costo hospitalario y de tratamiento médico, lo cual permitió estimar los costos individuales, totales y promedio del ingreso innecesario de estas usuarias. Para el cálculo de costos de sospecha de amenaza de parto pretérmino descartada, se plantearon los siguientes escenarios: internamiento de la totalidad de pacientes con sospecha de una posible amenaza de parto pretérmino (n=60) y la utilización de la prueba cualitativa de microglobulina alfa1 placentaria, tomando en consideración su valor predictivo negativo (97%). Posteriormente, se estimó el valor del cociente costo/ahorro (el cual se interpreta como beneficioso en caso de ser menor a 1 y no beneficioso en caso de ser mayor a 1). Resultados: se reportó una incidencia de parto pretérmino de 10,1%; los costos derivados de la atención a pacientes con sospecha de parto pretérmino provienen principalmente de la hospitalización. Se obtiene un costo mínimo por paciente de ¢3 317 071,21 colones que se traducen a $5 593,79 USD según tipo de cambio vigente el 30 de noviembre del 2019, de acuerdo con el Banco Central de Costa Rica. Por su parte, se estima un costo máximo de 6 356 780, 1 colones, lo que equivale a 11 219,96 USD al tipo de cambio vigente el 30 de noviembre del 2019. Por lo cual, una vez determinado el supuesto escenario de la implementación de la prueba de microglobulina alfa 1 placentaria en las pacientes que consultan a Emergencias por sospecha de amenaza de parto pretérmino, se demuestra que existe un potencial ahorro efectivo de recursos. Conclusión: Se recomienda tomar como referente el valor predictivo negativo de microglobulina alfa 1 placentaria en su medición cualitativa, como prueba diagnóstica auxiliar en el manejo de la sospecha de amenaza de parto pretérmino. Empero, es necesario efectuar estudios complementarios para estimar el valor predictivo positivo y otros estudios económicos para valorar la incorporación de esta prueba en el algoritmo de atención de las amenazas de parto pretérmino.

Aim: identify the possible economic benefit of implementing the measurement of placental alpha 1 microglobulin in users with suspected Preterm Labor Threat, who access the emergency service of the Hospital de The Women Dr. Adolfo Carit Eva, as a mechanism to impact on maternal and infant mortality and economic resources in the Costa Rican Social Security Fund. Methods: economic study, quantitative-retrospective approach, with cross-sectional design. This study included the consult of secondary sources of the Department of Medical Records and Statistics of the Hospital; where the cost of care for hospitalized patients diagnosed with ICD-10 "False Labor before 37 weeks" is calculated; compared to a hypothetical scenario where the qualitative measurement of placental alpha 1 microglobulin is implemented for this same health event. For the data analysis, both individual and collective costs were determined in diagnostic control tests, as well as hospital and medical treatment costs, which allowed estimating the individual, total and average costs of admission of these users. To calculate the costs of suspected Preterm Labor Treat ruled out, the following scenarios were proposed: hospitalization of all patients in whom a possible Preterm Labor Treat is suspected (n= 60) and use of the qualitative placental alpha1 microglobulin test, taking into account their negative predictive value (97%). Subsequently, the value of the cost/savings ratio is estimated (interpreted as beneficial if it is less than 1 and not beneficial otherwise). Results: An incidence of preterm delivery of 10.1% was reported; the costs derived from the care of patients with suspected preterm delivery come mainly from hospitalization. Therefore, when developing the respective cost analysis, it is evident that the economic benefit of to incorporate qualitative measurement of placental alpha 1 microglobulin is derived mainly from the decrease in hospitalization. A minimum cost per patient of 3,317,071.21 colones is obtained, which translates to 5,593.79 dollars at the exchange rate in force on November 30, 2019 according to the Central Bank of Costa Rica. For its part, a maximum cost of 6,356,780.1 colones is estimated, which translates to 11,219.96 dollars at the exchange rate in effect on November 30, 2019. Therefore, once the assumed scenario of the implementation of the placental alpha1 microglobulin test in patients who consult the Emergencies for suspected Preterm Labor Threat has been determined, there is a potential effective saving of resources. Conclusion: the use of the qualitative measurement of placental alpha 1 microglobulin, as an auxiliary diagnostic test in the management of the suspected threat of preterm delivery, it is recommended, from take the negative predictive value as a reference. However, it is necessary to carry out complementary studies to estimate the positive predictive value and other economic studies to include this test in the care algorithm of the Preterm Labor Threat.

Suplementación prenatal con omega 3 y su efecto en complicaciones durante el embarazo / Effect of prenatal omega 3 supplementation on pregnancy outcomes

Durante los últimos años se ha incentivado la suplementación con omega 3 durante el embarazo principalmente debido a la evidencia que mostraría beneficios en el desarrollo neuronal y visual del hijo en gestación, y a la prevención de patologías obstétricas asociadas a un aumento de la morbi-mortalidad perinatal. Los ácidos grasos poliinsaturados (PUFAs) omega 3, específicamente el ácido eicosapentaenoico (EPA) y el ácido docosahexaenoico (DHA), poseen propiedades antiinflamatorias, vasodilatadoras, además de propiedades anti-agregantes, las cuales han estimulado el uso de PUFAs en la prevención de enfermedades cardiovasculares. En esta revisión detallamos los efectos de la suplementación con omega 3 en diferentes aspectos del embarazo tales como la prevención del parto prematuro, preeclampsia, depresión post-parto y mejora del metabolismo durante la diabetes gestacional. Si bien existen diversos ensayos clínicos randomizados que estudian la suplementación con omega 3 durante la gestación, la evidencia sigue siendo no concluyente, debido a la variabilidad de las dosis y tiempo de administración. Ciertamente, un mayor número de estudios de calidad son necesarios para determinar el real impacto de la suplementación con omega 3 durante la gestación en la prevención de patologías obstétricas(AU)

During pregnancy, omega 3 supplementation has raised its popularity due to evidence that it would show not only benefits in the neural and visual development of the unborn child, but also in the prevention of obstetrical pathologies associated with of perinatal morbidity and mortality. Omega 3 polyunsaturated fatty acids (PUFAs), specifically, docosahexaenoic acid (DHA) and eicosapentaenoic acid (EPA), possess anti-inflammatory, vasodilatory and anti-aggregating properties, which have led to the use of PUFAs in the prevention of cardiovascular diseases. In this review, we detail the effects of omega 3 supplementation on different aspects of pregnancy such as prevention of preterm birth, pre-eclampsia, postpartum depression, and improved metabolism during gestational diabetes. Although there are several randomized clinical trials using omega-3 supplementation during pregnancy, the evidence remains inconclusive, due to variability in dosage and administration time. Certainly, a greater number of high-quality studies including randomized clinical trials are necessary to determine the impact of omega 3 supplementation during pregnancy in the prevention of obstetric pathologies(AU)

Medical treatment in pregnant women with subclinical hypothyroidism: systematic review and meta-analysis / Tratamiento médico en gestantes con hipotiroidismo subclínico: revisión sistemática y meta-análisis

Abstract Objectives: to determine the effectiveness of medical therapy in reducing complications associated with subclinical hypothyroidism during pregnancy. Methods: in 2021, a systematic review of available cohort studies was carried out in three databases, with no publication date limit. Study selection and data extraction were performed in duplicate. Random-effects meta-analysis was performed, and odds ratios were calculated, with the corresponding 95% confidence intervals. Cohort risk of bias was assessed using the Newcastle-Ottawa Scale (NOS). The certainty of the evidence was assessed using the GRADE methodology. Results: five studies were included for qualitative and quantitative synthesis. A statistically significant relationship was found between medical treatment in pregnant women with subclinical hypothyroidism with respect to spontaneous abortion (p=0.03; OR=0.77; CI95%=0.61-0.97), and no statistically significant relationship was found for delivery preterm (p=0.46; OR=1.11; CI95%=0.85-1.44), nor for abrupt placentae (p=0.56; OR=1.60; CI95%=0.33-7.66). Three studies were at moderate risk of bias, and two were at low risk of bias. In all the results the certainty was very low. Conclusions: medical treatment of subclinical hypothyroidism during pregnancy can have a beneficial effect in reducing cases of spontaneous abortion.

Resumo Objetivos: determinar la efectividad de la terapia médica para disminuir las complicaciones asociadas al hipotiroidismo subclínico durante la gestación. Métodos: en el 2021 se realizó una revisión sistemática de estudios de cohortes disponibles en tres bases de datos, sin límite de fecha de publicación. La selección de estudios y extracción de datos se realizaron por duplicado. Se realizó metaanálisis de efectos aleatorios y se calcularon los Odds ratio, con los correspondientes intervalos de confanza al 95%. El riesgo de sesgo de las cohortes se evaluó mediante la escala de Newcastle-Ottawa (NOS). La certeza de la evidencia se evaluó con la metodología GRADE. Resultados: cinco estudios fueron incluidos para síntesis cualitativa y cuantitativa. Se encontró una relación estadísticamente significativa del tratamiento médico en gestantes con hipotiroidismo subclínico con respecto al aborto espontáneo (p=0,03; OR=0,77; IC95%=0,61-0.97), no se encontró relación estadísticamente significativa para parto pre término (p=0.46; OR=1,11; IC95%=0.85-1.44), ni para abrupto placentae (p=0.56; OR=1,60; IC95%=0.33-7.66). Tres estudios tenían riesgo moderado de sesgo, y dos tenían riesgo de sesgo bajo. En todos los resultados la certeza fue muy baja. Conclusiones: el tratamiento médico del hipotiroidismo subclínico durante la gestación puede tener un efecto beneficioso para reducir los casos de aborto espontaneo.

Parámetros del líquido amniótico para diagnóstico de respuesta inflamatoria en parto pretérmino / Amniotic fluid parameters for the diagnosis of inflammatory response in preterm delivery

OBJETIVO: Evaluar el rendimiento del Gram, la glucosa y los leucocitos en líquido amniótico para el diagnóstico de respuesta inflamatoria fetal y materna en pacientes con parto pretérmino. MÉTODO: Estudio de rendimiento de pruebas diagnósticas. Se incluyeron 63 pacientes a quienes se les realizó amniocentesis por sospecha de infección intraamniótica. Se estudió la placenta y se comparó con el Gram, la glucosa y el recuento de leucocitos en líquido amniótico para ver su relación con la respuesta inflamatoria. Se evaluaron la sensibilidad, la especificidad, las razones de verosimilitud (LR, likelihood ratio), los valores predictivos y el valor de kappa. RESULTADOS: Las pruebas con mejor rendimiento fueron en conjunto la glucosa 50/mm3 en líquido amniótico, con una especificidad del 94,3% (intervalo de confianza del 95% [IC95%]: 84,6-98,1), LR + 8,83 (IC95%: 2,5-31,2) y kappa de 0,48 (IC95%: 0,15-0,82). También se consideró la propuesta de un nuevo punto de corte para el recuento de leucocitos en líquido amniótico en la respuesta inflamatoria fetal. CONCLUSIONES: La combinación del recuento de leucocitos en líquido amniótico y los valores de glucosa mejora el rendimiento para el diagnóstico de respuesta inflamatoria fetal en comparación con la histopatología de la placenta, lo que proporciona información útil para el enfoque de los recién nacidos.

OBJECTIVE: To evaluate the performance of Gram, glucose and leukocytes in amniotic fluid for the diagnosis of fetal and maternal inflammatory response in patients with preterm delivery. METHOD: A diagnostic performance test study was carried out. Sixty-three patients with preterm labor were included who underwent amniocentesis due to suspected intra-amniotic infection. Histopathology of the placenta was studied and compared with the Gram result, glucose and leukocyte count in amniotic fluid, and their relationship with the maternal and fetal inflammatory response. Sensitivity, specificity, likelihood ratios, predictive values, and kappa were evaluated. RESULTS: The tests with the best performance were overall glucose 50/mm3 in amniotic fluid for the diagnosis of the fetal inflammatory response, with a specificity of 94.3% (95% confidence interval [95% CI]: 84.6-98.1%), likelihood positive ratio 8.83 (95% CI: 2.5-31.2) and kappa of 0.48 (95% CI: 0.15-0.82). A new cut-off point for leukocyte count in amniotic fluid to diagnose fetal inflammatory response was proposed. CONCLUSIONS: The combination of amniotic fluid leukocyte count and amniotic fluid glucose values improves performance for the diagnosis of inflammatory response compared with placental histopathology, providing useful information for newborns approach.

¿La progesterona natural micronizada previene el trabajo de parto pretérmino?: Revisión sistemática de literatura / Does Natural Micronized Progesterone Prevent Preterm Labor?: Systematic Literature Review / A progesterona natural micronizada previne o trabalho de parto prematuro?: Revisão sistemática da literatura

Introducción. La progesterona es una hormona que favorece el mantenimiento del embarazo, es la protagonista de la fisiopatología del trabajo de parto pretérmino. De esta manera, se propone realizar una revisión sistemática que permita demostrar la utilidad de la progesterona natural micronizada en la mitigación de los efectos deletéreos del trabajo de parto pretérmino. Metodología. Revisión sistemática en la que se utilizaron los términos "MeSH" y "No ­ MeSH". Se empleó el programa "Publish or Perish" y bases de datos como: Medline, PubMed, Embase, Clinical Key, Cochrane Library, Scopus y Google Scholar. Se incluyeron artículos de revisión, meta-análisis, artículos originales (publicaciones preliminares o completas), resúmenes de congresos, seminarios publicados, libros de texto, protocolos hospitalarios regionales y consensos nacionales, en donde cada autor evaluó individualmente cada artículo y aplicó la herramienta CASPE. Resultados. En la literatura no es posible encontrar pautas concisas internacionales sobre el uso de la progesterona micronizada frente a la amenaza de trabajo de parto pretérmino (TPP). En general, para la mitigación del trabajo de parto, según lo analizado por los autores, se recomienda usar progesterona natural micronizada en cápsulas de 100 a 400 mg/día vía oral o 100 a 200 mg cada 12 a 24 horas vía vaginal. Desde la semana 16 hasta la semana 36 de gestación por vía oral y desde la semana 24 a 34 de gestación por vía vaginal. Discusión. El uso de la progesterona micronizada ha demostrado mitigar complicaciones posteriores al trabajo de parto pretérmino, sin embargo, no hay consenso sobre la dosificación y las vías de administración. Sumado a lo anterior, los estudios analizados pueden contener sesgos, por lo que se deja a elección del clínico el uso este medicamento. Conclusiones. La progesterona natural micronizada podría ser empleada para mitigar el trabajo de parto pretérmino según los artículos analizados por los autores a lo largo de la revisión. Sin embargo, se necesitan más estudios para legitimar dicha hipótesis.

Introduction. Progesterone is a hormone that favors maintaining pregnancy. It is the protagonist of the physiopathology of preterm labor. In this sense, a systematic review is proposed to demonstrate the usefulness of natural micronized progesterone in mitigating the harmful effects of preterm labor. Methodology. A systematic review in which the terms "MeSH" and "No ­ MeSH" were used. The "Publish or Perish" program was used, as well as databases, such as: Medline, PubMed, Embase, Clinical Key, Cochrane Library, Scopus, and Google Scholar. Review and meta-analysis articles, original articles (preliminary or complete publications), congress summaries, published seminars, textbooks, regional hospital protocols and national consensuses were included, in which each author individually assessed each article and applied the CASPE tool. Results. It was not possible to find concise international guidelines on using micronized progesterone for the threat of preterm labor (PTL) in literature. According to what the authors analyzed, for the mitigation of labor it is generally recommended the use of natural micronized progesterone in 100 to 400 mg/day capsules orally or 100 to 200 mg every 12 to 24 hours through the vagina. From week 16 to week 36 of pregnancy orally and from week 24 to 34 through the vagina. Discussion. Using micronized progesterone has demonstrated mitigating complications subsequent to preterm labor. However, there is no consensus on dosage and routes of administration. Added to the above, the analyzed studies may contain biases, reason why using this medication is left to the physician's discretion. Conclusions. Natural micronized progesterone can be used to mitigate preterm labor according to the articles the authors analyzed throughout the review. However, more studies are needed to validate this hypothesis.

Introdução. A progesterona é um hormônio que favorece a manutenção da gravidez, é a protagonista da fisiopatologia do parto prematuro. Dessa forma, propõe-se a realização de uma revisão sistemática que permita demonstrar a utilidade da progesterona natural micronizada na mitigação dos efeitos deletérios do trabalho de parto prematuro. Metodologia. Revisão sistemática em que foram utilizados os termos "MeSH" e "Não­MeSH". Foram utilizados o programa "Publish or Perish" e bases de dados como: Medline, PubMed, Embase, Clinical Key, Cochrane Library, Scopus e Google Scholar. Foram incluídos artigos de revisão, meta-análises, artigos originais (publicações preliminares ou completas), resumos de congressos, seminários publicados, livros didáticos, protocolos hospitalares regionais e consensos nacionais, onde cada autor avaliou individualmente cada artigo e aplicou a ferramenta CASPE. Resultados. Não é possível encontrar na literatura diretrizes internacionais concisas sobre o uso de progesterona micronizada diante da ameaça de trabalho de parto prematuro (TPP). Em geral, para a mitigação do trabalho de parto, conforme analisado pelos autores, recomenda-se o uso de progesterona natural micronizada em cápsulas de 100 a 400mg/dia por via oral ou 100 a 200mg a cada 12 a 24 horas por via vaginal. Da 16ª à 36ª semana de gestação por via oral e da 24ª à 34ª semana de gestação por via vaginal. Discussão. O uso de progesterona micronizada demonstrou mitigar as complicações após o trabalho de parto prematuro, no entanto, não há consenso sobre a dosagem e as vias de administração. Além do exposto, os estudos analisados podem conter vieses, pelo que cabe ao médico escolher o uso deste medicamento. Conclusões. A progesterona natural micronizada poderia ser utilizada para mitigar o trabalho de parto prematuro de acordo com os artigos analisados pelos autores ao longo da revisão. No entanto, mais estudos são necessários para legitimar essa hipótese.

Factores de riesgo asociados al trabajo de parto pretérmino en gestantes del Hospital Universitario Maternidad Nuestra Señora de la Altagracia septiembre-diciembre 2018 / Risk factors associated to preterm labor in pregnant patients in teaching Hospital Maternidad Nuestra Señora de la Altagracia September-December 2018

Objetivo: Determinar los factores de riesgo asociados al trabajo de parto pre-término en gestantes del Hospital Universitario Maternidad Nuestra Señora de la Altagracia, periodo septiembre­diciembre 2018. Método: se realizó un estudio retrospectivo, descriptivo y de corte transversal, con una muestra de 52 mujeres. Los datos obtenidos fueron procesados con el sistema Epi-info 7.0. Resultados: el estudio muestra que entre los factores de riesgo más relevantes se encuentra la multiparidad, mostrando que el 65.4 % tuvieron un número mayor a dos embarazos, de las cuales se encontró que el 52.9 % tienen historia de abortos. Otros factores de riesgo asociados a partos prematuros es la enfermedad obstétrica relacionada, con mayor relevancia la anemia, con un 31.6 %, seguida por las infecciones urinarias con un 17.5 %. Conclusión: el estudio demuestra que dentro de los factores de riesgo asociados a partos pretérminos se encuentran la anemia con un 31.6 % y las infecciones urinarias con un 17.5 %, además el 48.1 % de las pacientes tenían una edad gestacional que rondaba entre 33 y 36 semanas de gestación.

Objective: Determine the risk factors associated to preterm labor in pregnant patients in ''Hospital Maternidad Nuestra Señora de la Altagracia'' in Santo Domingo, September­December 2018. Methods: It is a descriptive, retrospective, and a cross-sectional study, with a sample of 52 women. The data collected was processed with the system Epi-info 7.0. Results: The study shows that multiparity is one of the most relevant risk factors for preterm delivery, showing that 65.4% had a number equal or greater than 2 pregnancies, of which 52.9% had a history of abortion. Others risk factors related to preterm delivery is a concomitant diseases within the pregnancy, being the anemia the most relevant with 31.6% and follow up by urinary tract infections with 17.5%. Conclusion: The study shows that within the risk factors associated with preterm delivery, anemia is within 31.6% and the urinary tract infections are 17.5%, Also related to preterm delivery we have the gestational age which was around 33 ­ 36 weeks in 48.1% of the preterm deliveries.