Implicações da deficiência materna de vitamina D: uma revisão sistemática / Implication of maternal vitamin D deficiency: a systematic review

O estudo objetiva avaliar a relação dos níveis de vitamina D em gestantes com as principais complicações gestacionais. A pesquisa foi realizada nas bases de dados PubMed, LILACS e BIREME, sendo selecionados artigos relevantes publicados de 2013 a 2018, usando os descritores: "vitamin D" AND "maternity" OR "pregnancy". Foram revisados 14 estudos observacionais incluindo casos-controles e coortes que investigaram a relação dos níveis de vitamina D maternos com pré-eclâmpsia, diabetes mellitus gestacional e prematuridade, sendo excluídos os estudos que utilizaram suplementação de vitamina D. Os dados foram extraídos por meio de uma tabulação com as seguintes informações: autor, ano da publicação, país do estudo, score obtido no downs and black, ano da coleta da amostra, tipo do estudo, número de participantes, método de obtenção da amostra de 25(OH)D, tempo da gestação na obtenção da amostra, complicação obstétrica, fatores de confusão ajustados e os principais desfechos. Foi obtido um total de 32.505 pacientes após a soma das amostras de todos os artigos analisados. O principal resultado encontrado, abrangendo as três comorbidades analisadas, relaciona níveis menores que 30 nmol/L de vitamina D como potencial fator de risco para pré-eclâmpsia, diabetes mellitus gestacional e prematuridade.(AU)

The study aims to assess the relationship between vitamin D levels in pregnant women and the main gestational complications. The research was carried out in the PubMed, LILACS and BIREME databases, with the selection of relevant articles published from 2013 to 2018, using the descriptors: "vitamin D" AND "maternity" OR "pregnancy". 14 observational studies were reviewed including control cases and cohorts that investigated the relationship between maternal vitamin D levels and pre-eclampsia, gestational diabetes mellitus and prematurity, and studies that used vitamin D supplementation were excluded. Data were extracted using a tabulation with the following information: author, year of publication, country of study, score obtained in downs and black, year of sample collection, type of study, number of participants, method of obtaining the sample of 25(OH)D, time of pregnancy in obtaining the sample, obstetric complication, adjusted confounding factors and the main outcomes. A total of 32,505 patients were obtained after adding the samples of all analyzed articles. The main result found, covering the three comorbidities analyzed, lists levels below 30 nmol/L of vitamin D as a potential risk factor for pre-eclampsia, gestational diabetes mellitus and prematurity.(AU)

Preeclampsia y enfermedad cardiovascular: un enfoque integral para detectar las fases subclínicas de complicaciones obstétricas y cardiovasculares / Preeclampsia and cardiovascular disease: an integrated approach to detect the subclinical stages of obstetrical and cardiovascular complications

Desde 1995 hasta la fecha la asociación entre patologías derivadas los embarazos hipertensivos y las enfermedades cardiovasculares ha generado un gran volumen de potentes evidencias epidemiológicas y clínicas. Los propósitos de esta revisión son varios. Mostrar la consistencia y magnitud de la evidencia científica. Integrar los riesgos/enfermedades cardiovasculares y los problemas obstétricos a través de la disfunción endotelial. Preconizar el seguimiento postparto de la hipertensa embarazada, como una ventana de oportunidad para beneficiar la salud de las mujeres y sus hijos. Incluir la historia obstétrica como factor de riesgo de enfermedad coronaria. Proponer cuestionarios adaptables a las prácticas locales para facilitar la pronta incorporación de los índices de riesgo obstétrico y cardiovascular en dos etapas de la vida de una mujer. Ha llegado el momento para que los equipos obstétricos, cardiológicos y las pacientes jueguen un rol en la prevención de los riesgos y enfermedades cardiovasculares.

From 1995 onwards the association between hypertensive pregnancies and cardiovascular disease has generated a great volume of epidemiologic and clinical evidence. The purposes of this review are several. To demonstrate the consistence and weight of the scientific evidence. To integrate cardiovascular risks/diseases and obstetric complications through the link of endothelial dysfunction. To advocate postpartum follow-up after a hypertensive pregnancy as a window of opportunity to benefit the health of mothers and offsprings. To include the obstetrical history as a risk factor for coronary disease. To propose questionnaires adaptable to local practices to incorporate cardiovascular and obstetrical indexes in two stages of a woman's lifetime. The time has come for obstetrical teams, cardiologists and patients to play a preventive role regarding cardiovascular risks and diseases.

Biochemical, endocrine, and histopathological profile of liver and kidneys of sheep with pregnancy toxemia / Perfil bioquímico, endócrino e histopatológico do fígado e rins de ovelhas com toxemia na prenhez

The objective of the present study was to characterize the biochemical, hormonal, and mineral profile, and histopathology of the liver and kidneys, related to the severity of natural cases of pregnancy toxemia (PT) in sheep. A total of 45 sheep with PT were analyzed at the "Clínica de Bovinos", Campus Garanhuns-UFRPE. The animals were submitted to clinical examination, followed by the collection of blood and urine. A necropsy was performed on thirteen animals that died and a histopathological examination was performed on samples of liver and kidneys. Increased creatinine, urea, glucose, fructosamine, non-esterified fatty acids, β-hydroxybutyrate, cortisol, chlorine, amylase, aspartate aminotransferase, gamma-glutamyltransferase, and folic acid were found, whereas insulin, potassium, and total and ionizable calcium presented low values for the species. Total protein, albumin, globulin, sodium, magnesium, and vitamin B12 remained within the normal range. In the macroscopic analysis of the liver, it was possible to observe an increase in organ and border size, yellowish coloration and parenchyma that varied from firm to friable. Vacuolation of the hepatocytes and renal tubular cells was observed. Metabolic disorders in sheep associated with hepatic and renal lesions are more apparent in overweight animals. With the greater impairment in hepatic and renal function, the clinical prognosis of animals with a high body score should be considered reserved.(AU)

Objetivou-se caracterizar o perfil bioquímico, hormonal, mineral e a histopatologia hepática e renal, relacionando com a severidade de casos naturais de toxemia da prenhez (TP) em ovelhas. Analisou-se 45 ovelhas na Clínica de Bovinos, Campus Garanhuns-UFRPE, com TP. Foram submetidas ao exame clínico, seguido de coleta de sangue e urina. Treze animais que vieram a óbito foram necropsiados, nas amostras de fígado e rins realizou-se exame histopatológico. Revelou-se elevação de creatinina, ureia, glicose, frutosamina, ácidos graxos não esterificados, β-hidroxibutirato, cortisol, cloro, amilase, aspartato aminotransferase, gama glutamiltransferase e ácido fólico, enquanto insulina, potássio, cálcio total e ionizável apresentaram valores abaixo para os da espécie. A proteína total, albumina, globulina, sódio, magnésio e vitamina B12 mantiveram-se dentro da normalidade. Na análise macroscópica do fígado, pôde-se observar aumento de tamanho do órgão e dos bordos, coloração amarelada e parênquima que variava de firme a friável. Observou-se vacuolização dos hepatócitos e das células tubulares renais. Os transtornos metabólicos nas ovelhas associados às lesões hepáticas e renais são mais aparentes nos animais com sobrepeso. Com o maior comprometimento da função hepática e renal, o prognóstico clínico dos animais com escore corporal elevado há de ser considerado reservado.(AU)

Expression of dNK cells and their cytokines in twin pregnancies with preeclampsia

OBJECTIVES: To assess the expression of decidual natural killer (dNK) cells and their cytokines in twin pregnancies with preeclampsia. METHODS: This was a prospective case-control study. The inclusion criteria were diamniotic (monochorionic or dichorionic) twin pregnancies in the third trimester with negative serological results for infectious diseases; absence of major fetal abnormalities or twin-twin transfusion syndrome; and no history of administration of corticosteroids in this pregnancy. The control group (CG) included uncomplicated twin pregnancies, and the preeclampsia group (PEG) included twin gestations with clinical and laboratory confirmation of the disease according to well-established criteria. Samples of the decidua were obtained and analyzed by immunohistochemistry for the expression of dNK cells and interleukins (ILs) 10, 12 and 15. In addition, maternal serum samples were collected to determine the levels of these interleukins. RESULTS: Thirty twin pregnancies were selected: 20 in the control group (CG) and 10 in the preeclampsia group (PEG). The PEG showed strong placental immunostaining for IL-15 (p=0.001) and high maternal serum levels of IL-10 (22.7 vs. 11.9 pg/mL, p=0.024) and IL-15 (15.9 vs. 7.4 pg/mL, p=0.024). CONCLUSION: A higher maternal serum concentration of both pro- and anti-inflammatory factors was observed in the twin pregnancies in the PEG. However, no difference in placental expression of IL-10 was found between the groups. These findings may suggest that maternal attempts to balance these interleukins were not sufficient to cause a placental response, and this failure may contribute to the development of preeclampsia.

Long term follow up of biomarkers of podocyte damage and renal function in patients with and without preeclampsia / Seguimento de longo prazo com biomarcadores de dano podocitário e função renal em pacientes com e sem pré-eclâmpsia

ABSTRACT Introduction: preeclampsia can be associated with future renal disease. Objectives: To measure changes in renal function overtime in patients with preeclampsia. Methods: urine and serum samples from eleven patients with preeclampsia and eight patients with a normal pregnancy were obtained during pregnancy, postpartum, and 3 years after delivery. Urine podocalyxin, protein, and serum creatinine were measured. Results: after 3 years, there were no significant differences in urinary podocalyxin in patients with or without preeclampsia: 4.34 ng/mg [2.69, 8.99] vs. 7.66 ng/mg [2.35, 13], p = 0.77. The same applied to urinary protein excretion: 81.5 mg/g [60.6, 105.5] vs. 43.2 mg/g [20.9, 139.3] p = 0.23. Serum creatinine was 0.86 mg/dL [0.7, 0.9] vs. 0.8 mg/dL [0.68, 1] p = 0.74 in those with and without preeclampsia. In normal patients, urinary podocalyxin decreased from 54.4 ng/mg [34.2, 76.9] during pregnancy to 7.66 ng/mg [2.35, 13] three years after pregnancy, p = 0.01. Proteinuria decreased from 123.5 mg/g [65.9, 194.8] to 43.2 mg/g [20.9, 139.3], p = 0.12. In preeclampsia patients, urinary podocalyxin decreased from 97.5 ng/mg [64.9, 318.4] during pregnancy to 37.1 ng/mg within one week post-partum [21.3, 100.4] p = 0.05 and 4.34 ng/mg [2.69, 8.99] three years after, p = 0.003. Proteinuria was 757.2 mg/g [268.4, 5031.7] during pregnancy vs. 757.2 mg/g [288.2, 2917] postpartum, p = 0.09 vs. 81.5 mg/g [60.6, 105.5] three years later, p = 0.01. Two patients still had proteinuria after 3 years. Conclusions: in preeclampsia patients, postpartum urinary podocalyxin decreased before proteinuria. After three years, serum creatinine, urinary podocalyxin, and protein tended to normalize, although some patients still had proteinuria.

RESUMO Introdução: a pré-eclâmpsia pode estar associada à doença renal no futuro. Objetivos: medir mudanças na função renal ao longo do tempo em pacientes com pré-eclâmpsia. Métodos: amostras de urina e soro de onze pacientes com pré-eclâmpsia e oito pacientes com gravidez normal foram obtidas durante a gravidez, pós-parto e 3 anos após o parto. Medimos podocalixina na urina, proteína e creatinina sérica. Resultados: após 3 anos, não houve diferenças significativas na podocalixina urinária em pacientes com ou sem pré-eclâmpsia: 4,34 ng/mg [2,69, 8,99] versus 7,66 ng/mg [2,35, 13], p = 0,77. O mesmo se aplicou à excreção urinária de proteínas: 81,5 mg/g [60,6, 105,5] vs. 43,2 mg/g [20,9, 139,3] p = 0,23. A creatinina sérica foi de 0,86 mg/dL [0,7, 0,9] vs. 0,8 mg/dL [0,68, 1] p = 0,74 naqueles com e sem pré-eclâmpsia. Em pacientes normais, a podocalixina urinária diminuiu de 54,4 ng/mg [34,2, 76,9] durante a gestação para 7,66 ng/mg [2,35, 13] três anos após a gravidez, p = 0,01. A proteinúria diminuiu de 123,5 mg/g [65,9, 194,8] para 43,2 mg/g [20,9, 139,3], p = 0,12. Em pacientes com pré-eclâmpsia, a podocalixina urinária diminuiu de 97,5 ng/mg [64,9, 318,4] durante a gravidez para 37,1 ng/mg em uma semana de pós-parto [21,3, 100,4] p = 0,05 e 4,34 ng/mg [2,69, 8,99] três anos depois, p = 0,003. A proteinúria foi de 757,2 mg/g [268.4, 5031.7] durante a gravidez vs. 757,2 mg/g [288.2, 2917] pós-parto, p = 0.09 vs. 81.5 mg/g [60.6, 105.5] três anos depois, p = 0.01. Dois pacientes ainda apresentavam proteinúria após 3 anos. Conclusões: em pacientes com pré-eclâmpsia, a podocalixina urinária pós-parto diminuiu antes da proteinúria. Após três anos, a creatinina sérica, a podocalixina urinária e a proteína tenderam a se normalizar, embora alguns pacientes ainda tivessem proteinúria.

Niveles plaquetarios y marcadores de disfunción endotelial multiorgánica en síndrome HELLP / Platelet levels and multiorganic endothelial dysfunction markers in the Hellp Syndrome (Hemolysis, elevated liver enzimes, low platelets)

HELLP syndrome (hemolysis, elevated liver enzimes, low platelets count) is one of the major complications of the progression of thrombotic microangiopathies characterized by thrombocytopenia, hemolistic anemia and organic dysfunction. It can be found in between 0,5 - 0,9 % of all pregnancies, and between 4- 14 % in all those women who develop preeclampsia. The general objectives of this report were to describe the relationship existing between the platelet levls and the organic endothelial dysfunction because of the HELLP syndrome, and to determine the perinatal results, during the 10 yr. period of the study, in patients that were assited between 2007 and 2016.

Hemorragia intracraneal asociada a preeclampsia severa / Intracranial haemorrhage associated with severe preeclampsia

La hemorragia intracraneal constituye una patología poco frecuente del embarazo y asociada a pobres resultados materno-fetales. Dentro de sus causas se encuentra, la preeclampsia severa, la cual aumenta la mortalidad en estas pacientes. Se presenta el caso de una gestante que acude al servicio de urgencias con síntomas neurológicos e hipertensión arterial, diagnosticándose preeclampsia severa, con realización de cesárea de urgencia. La tomografía de cráneo mostró hemorragia temporal izquierda, requiriendo manejo en cuidados intensivos con posterior estabilización y alta médica. La hemorragia intracraneal requiere un alto índice de sospecha, monitoreo intensivo y manejo multidisciplinario.

Intracranial hemorrhage is a rare complication during pregnancy, it is associated with poor maternal and fetal outcomes. Cerebral haemorrhage caused by pre-eclampsia increases mortality in these patients. We present the case of a pregnant woman who consulted to the service of urgencies with neurological symptoms and hypertension. Severe preeclampsia was diagnosed. She underwent successful emergent cesarean section. The brain scan showed a left temporal hemorrhage. She required intensive care management with subsequent stabilization and discharged from the hospital. Intracranial hemorrhage requires a high index of suspicion, intensive monitoring, and a multidisciplinary approach.

Choroidal changes in pre-eclampsia during pregnancy and the postpartum period: comparison with healthy pregnancy / Alterações da coroide na pré-eclâmpsia durante a gravidez e período pós-parto: comparação com a gravidez saudável

ABSTRACT Purpose: To investigate subfoveal choroidal thickness (SFCT) in patients with pre-eclampsia using enhanced depth imaging optical coherence tomography (EDI-OCT). Methods: A sample of 73 pregnant women was studied over 28 weeks of gestation. The sample was divided into two groups: one comprising pre-eclamptic pregnant women (n=32), and the other comprising healthy pregnant women (n=41). The SFCT was determined for all patients using EDI-OCT during pregnancy and at the third month of the postpartum period. Results: The SFCTs in pre-eclamptic pregnant women were 351.97 ± 22.44 and 332.28 ± 20.32 µm during the pregnancy and postpartum periods (p<0.001), respectively, whereas these values in healthy pregnant women were 389.73 ± 49.64 and 329.78 ± 22.36 µm (p<0.001), respectively. During pregnancy SFCT in pre-eclamptic pregnant women was significantly thinner than that in healthy pregnant women (p<0.001). However, there was no statistically significant difference during the postpartum period (p=0.623). Conclusions: The results suggest that SFCT is significantly decreased in pre-eclamptic pregnant women than in healthy pregnant women, despite no statistically significant difference in SFCT existing between the groups during the postpartum period.

RESUMO Objetivo: Investigar espessura subfoveal coroidal (SFCT) em pacientes com pré-eclâmpsia usando imagens de tomografia de coerência óptica de profundidade otimizada (EDI-OCT). Método: Uma amostra de 73 mulheres grávidas foi estudado ao longo de 28 semanas de gestação. A amostra foi dividida em dois grupos: um com mulheres grávidas com pré-eclâmpsia (n=32), o outro com as mulheres grávidas saudáveis (n=41). SFCT foi determinada em todos os pacientes utilizando EDI-OCT durante a gravidez e no terceiro mês do período pós-parto. Resultados: Os SFCTs em gestantes com pré-eclâmpsia foram 351,97 ± 22,44 µm e 332,28 ± 20,32 µm durante o período de gravidez e pós-parto (p<0,001), respectivamente. Estes valores em mulheres grávidas saudáveis foram 389,73 ± 49,64 µm e 329,78 ± 22,36 µm (p<0,001), respectivamente. Durante a gravidez o SFCT foi significantemente mais fino em mulheres com pré-eclâmpsia quando comparado com as mulheres saudáveis (p<0,001). No entanto, não houve diferença estatisticamente significante no período pós-parto (p=0,623). Conclusões: Os resultados sugerem que SFCT é significativamente mais fino em gestantes com pré-eclâmpsia do que nas mulheres grávidas saudáveis, apesar de não haver diferença estatisticamente significativa na SFCT entre os grupos durante o período pós-parto.

Maternal Factors and Adverse Perinatal Outcomes in Women with Preeclampsia in Maceió, Alagoas / Fatores Maternos e Resultados Perinatais Adversos em Portadoras de Pré-eclâmpsia em Maceió, Alagoas

Abstract Background: Preeclampsia has been associated with several risk factors and events. However, it still deserves further investigation, considering the multitude of related factors that affect different populations. Objective: To evaluate the maternal factors and adverse perinatal outcomes in a cohort of pregnant women with preeclampsia receiving care in the public health network of the city of Maceió. Methods: Prospective cohort study carried out in 2014 in the public health network of the city with a sample of pregnant women calculated based on a prevalence of preeclampsia of 17%, confidence level of 90%, power of 80%, and ratio of 1:1. We applied a questionnaire to collect socioeconomic, personal, and anthropometric data, and retrieved perinatal variables from medical records and certificates of live birth. The analysis was performed with Poisson regression and chi-square test considering p values < 0.05 as significant. Results: We evaluated 90 pregnant women with preeclampsia (PWP) and 90 pregnant women without preeclampsia (PWoP). A previous history of preeclampsia (prevalence ratio [PR] = 1.57, 95% confidence interval [95% CI] 1.47 - 1.67, p = 0.000) and black skin color (PR = 1.15, 95% CI 1.00 - 1.33, p = 0.040) were associated with the occurrence of preeclampsia. Among the newborns of PWP and PWoP, respectively, 12.5% and 13.1% (p = 0.907) were small for gestational age and 25.0% and 23.2% (p = 0.994) were large for gestational age. There was a predominance of cesarean delivery. Conclusion: Personal history of preeclampsia and black skin color were associated with the occurrence of preeclampsia. There was a high frequency of birth weight deviations and cesarean deliveries.

Resumo Fundamento: A pré-eclâmpsia tem sido associada a vários fatores de risco e eventos. No entanto, esta doença é merecedora de mais investigações, tendo em vista a multiplicidade de fatores relacionados que acometem diferentes populações. Objetivo: Avaliar os fatores maternos e os resultados perinatais adversos em uma coorte de gestantes com pré-eclâmpsia da rede pública de saúde de Maceió. Métodos: Estudo de coorte prospectivo realizado em 2014 na rede pública de saúde do município com uma amostra de gestantes calculada com base na prevalência de pré-eclâmpsia de 17%, nível de confiança de 90%, poder de 80% e razão de 1:1. Foi aplicado um questionário para coleta de dados socioeconômicos, pessoais e antropométricos, e obtidas variáveis perinatais de prontuário e da declaração de nascido vivo. Análise realizada com regressão de Poisson e teste do qui-quadrado, considerando p < 0,05 como significativo. Resultados: Foram estudadas 90 gestantes com pré-eclâmpsia (GCP) e 90 gestantes sem pré-eclâmpsia (GSP). História prévia de pré-eclâmpsia (razão de prevalência [RP] = 1,57, intervalo de confiança de 95% [IC 95%] 1,47-1,67, p = 0,000) e cor da pele negra (RP = 1,15, IC 95% 1,00-1,33, p = 0,040) estiveram associadas à ocorrência de pré-eclâmpsia. Entre os recém-nascidos das GCP e GSP, 12,5% e 13,1%, respectivamente, eram pequenos para a idade gestacional (p = 0,907) e 25,0% e 23,2%, respectivamente, eram grandes para a idade gestacional (p = 0,994). Houve predomínio da via de parto cesariana. Conclusão: História pessoal de pré-eclâmpsia e cor da pele negra estiveram associadas à ocorrência de pré-eclâmpsia. Houve elevadas frequências de desvios de peso ao nascer e da via de parto cesariana.

Ácido acetilsalicílico (AAS) na prevenção da pré-eclâmpsia / Acetylsalicylic acid in the pre-eclampsia prevention

As desordens hipertensivas na gestação, em especial a pré-eclâmpsia (PE), são consideradas, nos países em desenvolvimento, a maior causa de morbimortalidade tanto materna quanto perinatal. Com objetivo de alcançar maior entendimento da fisiopatologia da PE e de evitar as manifestações clínicas desta doença e suas consequências, foram realizadas pesquisas relacionadas à suplementação de substâncias que atuariam na fisiopatologia, em especial examinando o uso do ácido acetilsalicílico (AAS). O uso de AAS em baixas doses em gestantes com alto risco de desenvolver PE quando iniciado na 16ª semana de gestação, ou mesmo antes, pode ser considerado importante avanço devido aos resultados observados em estudos relatando boa eficácia e redução do risco de morte perinatal, de restrição de crescimento intrauterino e de nascimento pré-termo.(AU)

Hypertensive disorders in pregnancy, particularly preeclampsia (PE), are considered a major cause of maternal and perinatal morbidity and mortality in developing countries. With the objetive of improving the knowledge about the pathophysiology of PE, and to avoid the clinical manifestations and consequences of this disease, several studies related with the supplementation of acetylsalicylic acid (AAS) on the PE pathophysiology have been performed. The use of low doses of AAS starting at or before week 16 can be considered an important advance in reducing the risk of perinatal death, intrauterine growth restriction and preterm birth.(AU)

Preeclampsia - eclampsia: factor de riesgo para síndrome metabólico / Preeclampsia-eclampsia: risk factor for metabolic syndrome

La historia de Preeclampsia-Eclampsia ha sido documentada como factor de riesgo para SM. Objetivo: evaluar la relación entre el antecedente del Síndrome Preeclampsia-Eclampsia y el diagnóstico del SM actual. Método: Un estudio de casos, descriptivo y retrospectivo de pacientes mayores de 35 años, con historia de Preeclampsia ­ Eclampsia por lo menos 20 años antes. Procedimiento: Recolección de datos en las consultas y hospitalización del Hospital Hernández, Los Magallanes, Caracas, Venezuela entre los meses de septiembre a noviembre del 2012, y se evaluó el 100% de las mujeres atendidas en la consulta creada para ese fin. A estas pacientes se les realizó una historia médica integral y se evaluaron los criterios diagnósticos del SM. Tratamiento estadístico: Las variables se registraron en una hoja de recolección de datos y se vaciaron en una base de datos Excel 2010. Se evaluaron desde el punto de vista descriptivo, las variables numéricas fueron tratadas con promedios y medidas de tendencia central y las cualitativas con proporciones y/o porcentaje. Las comparaciones intergrupales se realizaron a través de la prueba de chi cuadrado modificado para el tamaño de la muestra(AU)

It has been documented that a history of Preeclampsia - Eclampsia is a risk factor for metabolic syndrome. Objective: To evaluate the relationship between a history of preeclampsiaeclampsia syndrome and diagnosis of the current metabolic syndrome. Method: A case study, descriptive and retrospective patients in women older than 35 years, with a history of preeclampsia - Eclampsia at least 20 years earlier. Procedure: a data collection was used in ambulatory and hospitalization area of the Hospital José Gregorio Hernández between the months of September to November 2012, and assessed 100% of women are addressed in the query created for that purpose. These patients had a comprehensive medical history and diagnostic criteria of MS were evaluated. Statistics: Variables were recorded on a sheet of data collection and emptied in a database Excel 2010 data. They were evaluated from the descriptive point of view, numeric variables were treated with averages and measures of central tendency and qualitative proportions and / or percentage. Intergroup comparisons were carried out by the modified chi-square test for sample size(AU)

La preeclampsia: un problema intrincado / Preeclampsia: an intricate problem

Sin conocer aún el origen preciso de la preeclampsia, sabemos hoy que es un trastorno con fondo genético e inmunológico-inflamatorio que compromete el endotelio y, con alteraciones metabólicas y de estrés oxidativo, es definida como la presencia de hipertensión arterial con compromiso multiorgánico en una gestante. Produce serio compromiso materno y feto-neonatal y la posibilidad de secuelas metabólicas y cardiovasculares en el futuro para ambos. Sin medidas de prevención o terapéuticas efectivas, la preeclampsia debe ser sospechada por su historia obstétrica o familiar y por la sintomatología de compromiso orgánico, como cefalea, dolor en hipocondrio derecho, falta de crecimiento uterino, compromiso del bienestar fetal, entre otros. La terminación del embarazo será a las 37 semanas de preferencia y de acuerdo al estado materno y fetal. La atención del puerperio será preferente.

The origin of preeclampsia is not known but is considered a genetic-immuno-inflammatory disorder that compromises the endothelium along with metabolic alterations and oxidative stress. It is currently defined as presence of arterial hypertension and multiorganic involvement in a pregnant woman. Mother and the fetus-neonate are dangerously ill and are prone to metabolic and cardiovascular sequelae in the future. Preventive and therapeutic measures are not effective, but preeclampsia should be suspected considering obstetrical and familiar background and by organic symptomatology including headache, right upper abdominal pain, lack of uterine growth, fetal compromise and others. Pregnancy termination is recommended at 37 weeks of gestation and according to maternal and fetal wellbeing. Care in the puerperium should be preferential.

Actualización sobre las bases fisiopatológicas de la preeclampsia / Actualización sobre las bases fisiopatológicas de la preeclampsia

La preeclampsia constituye una enfermedad de origen obstétrico que implica un aumento de la morbilidad y la mortalidad materna y perinatal. A tales efectos se llevó a cabo una extensa revisión bibliográfica con el fin de exponer las teorías más actualizadas en relación con la fisiopatología de la preeclampsia, que será un material de consulta valioso para los obstetras, quienes profundizarán en la génesis de la enfermedad, lo cual repercute en la toma de mejores decisiones.

Preeclampsia constitutes a disease of obstetric origin that implies an increase of the maternal and perinatal morbidity and mortality. To such effects an extensive literature review was carried out with the purpose of exposing the most updated theories in relation to the pathophysiology of preeclampsia that will be a valuable material for the obstetricians who will deepen in the genesis of the disease, which rebounds in a better decision making.

Obesidade e Pré-Eclâmpsia / Obesity and Pre-eclampsia

A obesidade vem crescendo rapidamente e representa desafios na saúde pública. O aumento do número de gestantes obesas tem sido associado à maior chance de desenvolver complicações perinatais, entre elas a pré-eclâmpsia (PE). A pré-eclâmpsia é caracterizada pelo aparecimento de hipertensão arterial e proteinúria, que se desenvolvem depois de 20 semanas de gestação em mulheres previamente normotensas ou sobreposta à hipertensão arterial pré-existente. O objetivo do estudo foi avaliar, por meio de revisão sistematizada, os dados da literatura referentes à inter-relação da PE com a obesidade, a relação do índice de massa corpórea (IMC) pré-gestacional e o ganho de peso excessivo com a gravidade da doença e a existência de fatores preditores. Foi realizada ampla pesquisa na literatura nacional e internacional, procurando identificar e extrair informações, utilizando a seguinte estratégia de busca: (("Obesity"[Mesh]) AND "Pregnancy"[Mesh]) AND "Preeclampsia"[Mesh]. Dos artigos selecionados, foram identificados nove estudos sobre implicações da obesidade em gestantes. Quanto maior o IMC pré-gestacional e o ganho de peso durante a gravidez, maior a chance de desenvolver pré-eclâmpsia, especialmente, na forma grave. O fator de crescimento placentário (PlGF) parece ser bom preditor da PE no segundo trimestre, podendo ser usado como método de rastreio nas gestantes obesas.(AU)

Obesity has grown representing challenges to the public health system. The increase of obese gestations has been associated with the higher chances of perinatal complications, amongst which is pre-eclampsia. Pre-eclampsia is characterized by the appearance of arterial hypertension and proteinuria, both developing after 20 weeks of gestation in women that were prior to gestation or whose pre-existing hypertension becomes superimposed. The objective was to evaluate, by systematic review, the interrelationship between preeclampsia and obesity, assessing the pre-gestation body mass index (BMI) in relation to the excessive weight gain following the onset of gestation and the severity of the illness and its predictive factors. Ample research on the national and international literature was performed in order to identify and extract information using the following search strategy ("Obesity"[Mesh]) AND "Pregnancy"[Mesh]) AND "Pre-eclampsia"[Mesh]. From the articles selected, nine studies were identified concerning the implications of obesity on pregnancy. The higher pre-pregnancy BMI and weight gain during pregnancy, the bigger are the chance of developing preeclampsia, specially in severe form. The maternal serum placental growth factor (PlGF) is a good predictor for PE in the second trimester, and may be used as a tracking method in obese pregnant women.(AU)

Síndrome de HELLP normotensivo: caso clínico / Normotensive HELLP syndrome: Report of one case

HELLP syndrome (hemolysis, elevated liver enzymes and low platelets) represents a severe form ofpreeclampsia associated with serious maternal and fetal morbiditiesand even death. Usually HELLP syndrome appears during the evolution of a severepreeclampsia; however HELLP syndrome can have atypical clinical manifestations.We report a 22-year-old female who consulted at 20 weeks of pregnancy for lumbarpain, dysuria and fever. A urinalysis revealed the presence of white blood cells. Thepatient was admitted to hospital and treated with antimicrobials. Forty eight hoursafter admission a proteinuria of 440 mg/24 h was detected. A severe pre eclampsia-HELLP syndrome was diagnosed. However the patient remained with normal bloodpressure. An elevation of liver enzymes and creatinine were observed. Five dayslater fetal death was confirmed and an abortion was induced. The patient requireda platelet transfusion. Four days after the abortion, the patient was discharged ingood conditions.

Role of nitric oxide, angiogenic growth factors and biochemical analysis in preeclampsia.

Preeclampsia, a pregnancy-related hypertensive disorder, is one of the leading causes of fetal and maternal mortality and morbidity globally. Angiogenic growth factors, including vascular endothelial growth factor (VEGF) and placental growth factor (PlGF) are involved in the generation of new blood vessels required for placental development and physiological functions, while nitric oxide (NO) acts as vasodilator and also plays a role in angiogenesis. The objective of this study was to evaluate the role of NO, angiogenic growth factors (VEGF and PIGF) and other biochemical parameters in the development of preeclampsia among pregnant mothers. A complete clinical history, including anthropometric measurements and biochemical investigations, including renal function tests, liver function tests and lipid profile were performed among twenty preeclampsia patients aged 19 to 32 yrs. Results were compared with age-matched normotensive pregnant mothers. The body weight, body mass index (BMI), blood pressure, concentrations of urea, uric acid and triglyceride and activities of transaminase enzymes (aspartate transaminase, AST and alanine transaminase, ALT) in serum were significantly higher (p<0.05) than normotensive subjects. Serum concentrations of VEGF, PlGF and NO were significantly decreased (p<0.005) in preeclamptic patients. NO was found negatively correlated with body weight (r = -0.369, p<0.05), systolic blood pressure (r = -0.822, p<0.005), diastolic blood pressure (r = -0.714, p<0.005) and was positively correlated with VEGF (r = 0.464, p<0.005) and PlGF (r = 0.546, p<0.005). VEGF and PlGF showed significant (p<0.005) negative correlation with systolic and diastolic blood pressure and PlGF was significantly correlated with triglyceride (r = -0.379). However, no significant correlation was observed between the VEGF and PlGF. In conclusion, the results indicated that body weight, triglyceride, angiogenic growth factors and NO might associate with preeclampsia development.

Purinas y ácido úrico en pre-eclampsia: interacciones fisiopatológicas y proyecciones en investigación / Uric acid and purine plasma levels as plausible markers for placental dysfunction in pre-eclampsia

Uric acid is the final metabolite of purine break down, such as ATP, ADP, AMP, adenosine, inosine and hypoxanthine. The metabolite has been used broadly as a renal failure marker, as well as a risk factor for maternal and neonatal morbidity during pre-eclamptic pregnancies. High purine levels are observed in pre-eclamptic pregnancies, but the sources of these purines are unknown. However, there is evidence that pre-eclampsia (mainly severe pre-eclampsia) is associated with an increased release of cellular fragments (or microparticles) from the placenta to the maternal circulation. These in fact could be the substrate for purine metabolism. Considering this background, we propose that purines and uric acid are part of the same physiopathological phenomenon in pre-eclampsia (i.e., placental dysfunction) and could become biomarkers for placental dysfunction and postnatal adverse events.

Hematoma subdural agudo espontâneo e hemorragia intracerebral em paciente com microangiopatia trombótica gestacional / Spontaneous acute subdural hematoma and intracerebral hemorrhage in a patient with thrombotic microangiopathy during pregnancy

Pré-eclâmpsia, síndrome HELLP (hemólise, elevação de enzimas hepáticas e plaquetopenia) e fígado gorduroso agudo da gestação são as principais causas de microangiopatia trombótica e disfunção hepática grave durante a gestação, representando um spectrum do mesmo processo patológico. Relatou-se aqui o caso de uma gestante com 35 semanas internada em unidade de terapia intensiva no pós-operatório imediato de cesariana por morte fetal, com náuseas, vômitos e icterícia. Diagnosticaram-se pré-eclâmpsia pós-parto e fígado gorduroso agudo da gestação. Houve evolução tardia com hematoma subdural agudo e hemorragia intracerebral, sendo realizado tratamento neurocirúrgico. A paciente foi a óbito por anemia hemolítica refratária, com sangramento espontâneo em múltiplos órgãos. Pré-eclâmpsia, síndrome HELLP e fígado gorduroso agudo da gestação são processos patológicos que podem se sobrepor e se associar a complicações potencialmente fatais, como a hemorragia intracraniana aqui descrita. Sua detecção e diagnóstico precoces são fundamentais para a instituição de manejo adequado e sucesso do tratamento.

Preeclampsia, HELLP syndrome (hemolysis, elevated liver enzymes, and low-platelet count), and acute fatty liver of pregnancy are the main causes of thrombotic microangiopathy and evere liver dysfunction during pregnancy and represent different manifestations of the same pathological continuum. The case of a 35-week pregnant woman who was admitted to an intensive care unit immediately after a Cesarean section due to fetal death and the presence of nausea, vomiting, and jaundice is reported. Postpartum preeclampsia and acute fatty liver of pregnancy were diagnosed. The patient developed an acute subdural hematoma and an intracerebral hemorrhage, which were subjected to neurosurgical treatment. The patient died from refractory hemolytic anemia and spontaneous bleeding of multiple organs. Preeclampsia HELLP syndrome, and acute fatty liver of pregnancy might overlap and be associated with potentially fatal complications, including intracranial hemorrhage, as in the present case. Early detection and diagnosis are crucial to ensure management and treatment success.

Pré-eclâmpsia: o que há de anômalo na placentação? / Preeclampsia: what is wrong with placentation

A pré-eclâmpsia (PE) constitui a principal causa de morte materna em diversos países do mundo e contribui significativamente para a prematuridade, o baixo peso fetal e o aumento da mortalidade neonatal. A placenta constitui o substrato anatômico etiopatogênico principal para a doença, inclusive em ambiente extra-uterino ou na ausência de embrião. O único tratamento efetivo para a PE consiste na interrupção da gravidez e remoção completa da placenta. Em muitos casos, esta medida precisa ser tomada prematuramente, visando garantir a vida da mãe, do bebê ou de ambos. Estudos clínicos, histológicos e laboratoriais demonstram alterações hemodinâmicas, histológicas, imunológicas e bioquímicas na placentação de mulheres portadoras de PE. Entender como essas alterações assumem proporções sistêmicas no organismo materno pode ser a chave para impedir a progressão abrupta e violenta da doença. Certamente, o entendimento de todo o processo fisiopatológico é necessário para qualquer proposta de predição, prevenção ou terapia que possa diminuir as altíssimas taxas de mortalidade atribuídas à PE.

Preeclampsia (PE) is the leading cause of maternal death in many countries worldwide and contributes significantly to prematurity, low fetal weight and increased neonatal mortality. The placenta seems to be the main etiopathogenic anatomical substrate for the disease even in extra-uterine environment or in the absence of the embryo. The only effective treatment for PE is the pregnancy interruption and complete placenta removal. In many cases, this action needs to be taken prematurely in order to ensure the life of the mother, baby or both. Clinical, histological and laboratory have shown hemodynamic, histological, immunological and biochemical abnormalities in placentation in women with PE. Understanding how these changes take on systemic proportions in the mother may be the key to prevent the abrupt progression of the disease. Indeed, an understanding of all physiological and the alterations in PE process is required for any action of prediction, prevention or therapy that can reduce the extremely high rates of mortality associated to PE.