Espectro do acretismo placentário: recomendações atualizadas da perspectiva do profissional de imagem pré-natal / Placenta accreta spectrum disorders: current recommendations from the perspective of antenatal imaging

O parto cesáreo (PC) é o procedimento cirúrgico mais comumente realizado nos Estados Unidos (mais de 1 milhão de cirurgias por ano) e um dos procedimentos mais realizados em todo o mundo.(1) Embora o PC seja um procedimento potencialmente salvador de vidas, quando corretamente indicado, sua frequência aumentou constantemente nas últimas décadas (atualmente 21,1% globalmente, variando de 5%, na África Subsaariana, a 42,8%, na América Latina e no Caribe). Além disso, estudos demonstram tendência continuada de aumento (projeção para 2030: 28,5% globalmente, variando de 7,1%, na África Subsaariana, a 63,4%, no leste da Ásia).(2) República Dominicana, Brasil, Chipre, Egito e Turquia são os líderes mundiais, com taxas de PC variando de 58,1% a 50,8%, respectivamente, o que aponta para uma tendência preocupante de medicalização do parto e indicação excessiva do PC.(2) Outros procedimentos cirúrgicos como dilatação, curetagem, miomectomia e histeroscopia cirúrgica são menos frequentes que o PC. Ainda assim, devido à tendência de maior idade materna, o número de gestantes previamente submetidas a esses procedimentos também tende a aumentar. Esses dados apontam para um número crescente de gestações em úteros manipulados cirurgicamente Gestantes com cicatrizes uterinas prévias correm risco de aumento da morbimortalidade. Complicações como placenta prévia, rotura uterina espontânea, deiscência uterina (com ou sem intrusão placentária), gestação em cicatriz de cesariana (GCC) e distúrbios do espectro do acretismo placentário (EAP) estão associadas a sangramento uterino potencialmente fatal, lesões extrauterinas e parto pré-termo

Análise das indicações de cesáreas com base na classificação de Robson em uma maternidade brasileira de risco habitual / Cesarean section indication analysis in a habitual-risk maternity hospital in Brazil according to Robson classification system

Objetivo: Avaliar a taxa de cesáreas e suas principais indicações com base na classificação de Robson na Maternidade Municipal de São Vicente em 2020, um hospital público de risco habitual. Métodos: Trata-se de um estudo transversal observacional. Foram efetuadas revisão, correção e análise retrospectiva e documental da classificação de Robson na Maternidade Municipal de São Vicente. Foram analisados partos de janeiro a dezembro de 2020, dos quais foram coletadas e ordenadas as informações mais relevantes para a pesquisa. Resultados: Uma amostra de 1.627 partos foi encontrada. A taxa geral de cesáreas encontrada foi de 46,3%. A contribuição relativa dos grupos 1, 2 e 5 para a taxa de cesáreas foi de 16,8%, 13,3% e 46,8%, respectivamente, enquanto a contribuição relativa das indicações de cesáreas foi de 25,5% para parto cesáreo anterior e de 21,5% para sofrimento fetal agudo. Conclusão: Foi evidenciada alta taxa de cesáreas, e as principais indicações foram cesárea prévia e sofrimento fetal agudo. Os grupos 1, 2 e 5 da classificação de Robson foram os que mais contribuíram para essa taxa.

Objective: To evaluate the cesarean section rate and the cesarean indication rate based on Robson Classification during 2020 in Sã o Vicente's Municipal Maternity, a habitual-risk public hospital. Methods: This is a cross-sectional observational study. We have reviewed, corrected, analyzed retrospectively and documented Robson Classification in Sã o Vicente's Municipal Maternity. Births from January to December 2020 were analyzed, from which the main data for the research was collected and organized. Results: A sample of 1,627 births was found. The overall rate of cesarean section was 46.3%. The relative contribution of groups 1, 2 and 5 to the cesarean rate was 16.8%, 13.3% and 46.8%, respectively. While the cesarean indication relative contribution was 25.5% for previous cesarean and 21.5% for fetal distress. Conclusion: We found a high cesarean rate and the main indications were previous cesarean and fetal distress. Robson classification groups 1, 2 and 5 contributed the most to this rate.

Outcome analysis of pregnancy termination and expectant treatment in pregnant women with suspected invasive placenta accreta spectrum disorders in the second trimester / 中华妇产科杂志

Objective: To investigate the maternal and fetal outcomes of expectant treatment and early termination of pregnancy in pregnant women with suspected invasive placenta accreta spectrum disorders (PAS) in the second trimester. Methods: A retrospective cohort study was performed on 51 pregnant women with suspected invasive PAS (ultrasound score ≥10) evaluated by ultrasound with gestational age <26 weeks and confirmed as invasive PAS by intraoperative findings or postoperative pathology in Peking University Third Hospital from January 2015 to January 2022. According to the informed choice of pregnant women and their families, they were divided into expectant treatment group (37 cases) and mid-term termination group (14 cases). The general clinical data and outcome indexes of the two groups were analyzed by χ2 test, Mann-Whitney U rank sum test, logistic regression and linear regression. Results: (1) General clinical data: among 51 pregnant women who were assessed as suspected invasive PAS by ultrasonography in the second trimester, invasive PAS was finally diagnosed by intraoperative findings and postoperative pathology, among which 46 cases (90%) were placenta percreta and 5 cases (10%) were placenta increta. (2) Outcome indicators: univariate analysis showed that there were no statistically significant differences in the intraoperative blood loss (median: 2 200 vs 2 150 ml), the proportion of blood loss >1 500 ml [73% (27/37) vs 9/14], the hysterectomy rate [62% (23/37) vs 8/14], the rate of intensive care unit (ICU) admission [78% (29/37) vs 9/14] between the expectant treatment group and the mid-term termination group (all P>0.05). Multivariate analysis showed that the rate of intraoperative blood loss >1 500 ml (aOR=0.481, 95%CI: 0.017-13.958; P=0.670), hysterectomy (aOR=0.264, 95%CI: 0.011-6.569, P=0.417) and ICU admission (aOR=1.327, 95%CI: 0.048-36.882, P=0.867) between the two groups showed no statistical differences. (3) Outcome analysis: all 37 cases in the expectant treatment group had live births and no early neonatal death. Five pregnant women (14%, 5/37) in the expectant treatment group underwent emergency cesarean section in the course of expectant treatment. In the mid-term termination group, all pregnancies were terminated by operation, including 9 cases of hysterectomy and 5 cases of placental hysterectomy. There was 1 fetal survival (gestational age of termination: 27+4 weeks) and 13 fetal death in the mid-term termination group. Conclusions: Pregnant women who are diagnosed as suspected invasive PAS, especially those with placenta percreta, have the risk of uterine rupture and emergency surgery in the course of expectant treatment. However, early termination of pregnancy does not reduce the risk of intraoperative blood loss and hysterectomy.

Relationship between the Prenatal Diagnosis of Placenta Acreta Spectrum and Lower Use of Blood Components / Relação entre o diagnóstico prenatal de espectro da placenta acreta e menor uso de hemoderivados

Abstract Objective To describe the clinical results of patients admitted and managed as cases of placenta accreta spectrum (PAS) at a Central American public hospital and the influence of the prenatal diagnosis on the condition. Materials and Methods A retrospective analysis of PAS patients treated at Hospital Bertha Calderón Roque, in Managua, Nicaragua, between June 2017 and September 2021. The diagnostic criteria used were those of the International Federation of Gynecology and Obstetrics (Fédération Internationale de Gynécologie et d'Obstétrique, FIGO, in French). The population was divided into patients with a prenatal ultrasonographic diagnosis of PAS (group 1) and those whose the diagnosis of PAS was established at the time of the caesarean section (group 2). Results During the search, we found 103 cases with a histological and/or clinical diagnosis of PAS; groups 1 and 2 were composed of 51 and 52 patients respectively. Regarding the clinical results of both groups, the patients in group 1 presented a lower frequency of transfusions (56.9% versus 96.1% in group 2), use of a lower number of red blood cell units (RBCUs) among those undergoing transfusions (median: 1; interquartile range: [IQR]: 0-4 versus median: 3; [IQR]: 2-4] in group 2), and lower frequency of 4 or more RBCU transfusions (29.4% versus 46.1% in group 2). Group 1 also exhibited a non-significant trend toward a lower volume of blood loss (1,000 mL [IQR]: 750-2,000 mL versus 1,500 mL [IQR]: 1,200-1,800 mL in group 2), and lower requirement of pelvic packing (1.9% versus 7.7% in group 2). Conclusion Establishing a prenatal diagnosis of PAS is related to a lower frequency of transfusions. We observed a high frequency of prenatal diagnostic failures of PAS. It is a priority to improve prenatal detection of this disease.

Is There a Place for Family-centered Cesarean Delivery during Placenta Accreta Spectrum Treatment? / Existe um lugar para cesariana centrada na família durante o tratamento do espectro da placenta acreta?

ABSTRACT Objective Placenta accreta spectrum (PAS) is a cause of massive obstetric hemorrhage and maternal mortality. The application of family-centered delivery techniques (FCDTs) during surgery to treat this disease is infrequent. We evaluate the implementation of FCDTs during PAS surgeries. Methods This was a prospective, descriptive study that included PAS patients undergoing surgical management over a 12-month period. The patients were divided according to whether FCDTs were applied (group 1) or not (group 2), and the clinical outcomes were measured. In addition, hospital anesthesiologists were surveyed to evaluate their opinions regarding the implementation of FCDTs during the surgical management of PAS. Results Thirteen patients with PAS were included. The implementation of FCDTs during birth was possible in 53.8% of the patients. The presence of a companion during surgery and skin-to-skin contact did not hinder interdisciplinary management in any case. Conclusion Implementation of FCDTs during PAS care is possible in selected patients at centers with experience in managing this disease.

Resumo Objetivo O espectro da placenta acreta (do inglês placenta accreta spectrum - PAS) é causa de hemorragia obstétrica maciça e mortalidade materna. A aplicação de técnicas de parto centrado na família (do inglês family-centered delivery techniques - FCDTs) durante a cirurgia para tratar esta doença é pouco frequente. Avaliamos a implementação das FCDTs durante as cirurgias do PAS. Métodos Estudo prospectivo e descritivo que incluiu pacientes com PAS submetidos a tratamento cirúrgico durante um período de 12 meses. Os pacientes foram divididos de acordo com a aplicação de FCDTs (grupo 1) ou não (grupo 2), e os resultados clínicos foram medidos. Além disso, anestesiologistas hospitalares foram entrevistados para avaliar suas opiniões sobre a implementação das FCDTs durante o manejo cirúrgico do PAS. Resultados Foram incluídos 13 pacientes com PAS. A implementação de FCDTs durante o parto foi possível em 53,8% das pacientes. A presença do acompanhante durante a cirurgia e o contato pele a pele não prejudicou o manejo interdisciplinar em nenhum caso. Conclusão A implementação de FCDTs durante o atendimento do PAS é possível em pacientes selecionados em centros com experiência no manejo dessa doença.

Consenso Colombiano de Tratamiento del Espectro de Acretismo Placentario (EAP) / Colombian Consensus on the Treatment of Placenta Accreta Spectrum (PAS)

RESUMEN Introducción: el espectro de acretismo placentario (EAP) es una condición asociada a sangrado masivo posparto y mortalidad materna. Las guías de manejo publicadas en países de altos ingresos recomiendan la participación de grupos interdisciplinarios en hospitales con recursos suficientes para realizar procedimientos complejos. Sin embargo, algunas de las recomendaciones de estas guías resultan difíciles de aplicar en países de bajos y medianos ingresos. Objetivos: este consenso busca formular recomendaciones generales para el tratamiento del EAP en Colombia. Materiales y métodos: en el consenso participaron 23 panelistas, quienes respondieron 31 preguntas sobre el tratamiento de EAP. Los panelistas fueron seleccionados con base en la participación en dos encuestas realizadas para determinar la capacidad resolutiva de hospitales en el país y la región. Se utilizó la metodología Delphi modificada, incorporando dos rondas sucesivas de discusión. Para emitir las recomendaciones el grupo tomó en cuenta la opinión de los participantes, que lograron un consenso mayor al 80 %, así como las barreras y los facilitadores para su implementación. Resultados: el consenso formuló cinco recomendaciones integrando las respuestas de los panelistas. Recomendación 1. Las instituciones de atención primaria deben realizar búsqueda activa de EAP en pacientes con factores de riesgo: placenta previa e historia de miomectomía o cesárea en embarazo previo. En caso de haber signos sugestivos de EAP por ecografía, las pacientes deben ser remitidas de manera inmediata, sin tener una edad gestacional mínima, a hospitales reconocidos como centros de referencia. Las modalidades virtuales de comunicación y atención en salud pueden facilitar la interacción entre las instituciones de atención primaria y los centros de referencia para EAP. Se debe evaluar el beneficio y riesgo de las modalidades de telemedicina. Recomendación 2. Es necesario que se definan hospitales de referencia para EAP en cada región de Colombia, asegurando el cubrimiento de la totalidad del territorio nacional. Es aconsejable concentrar el flujo de pacientes afectadas por esta condición en unos pocos hospitales, donde haya equipos de cirujanos con entrenamiento específico en EAP, disponibilidad de recursos especializados y un esfuerzo institucional por mejorar la calidad de atención, en busca de tener mejores resultados en la salud de las gestantes con esta condición. Para lograr ese objetivo los participantes recomiendan que los entes reguladores de la prestación de servicios de salud a nivel nacional, regional o local vigilen el proceso de remisión de estas pacientes, facilitando rutas administrativas en caso de que no exista contrato previo entre el asegurador y el hospital o la clínica seleccionada (IPS). Recomendación 3. En los centros de referencia para pacientes con EAP se invita a la creación de equipos que incorporen un grupo fijo de especialistas (obstetras, urólogos, cirujanos generales, radiólogos intervencionistas) encargados de atender todos los casos de EAP. Es recomendable que esos grupos interdisciplinarios utilicen el modelo de "paquete de intervención" como guía para la preparación de los centros de referencia para EAP. Este modelo consta de las siguientes actividades: preparación de los servicios, prevención e identificación de la enfermedad, respuesta ante la presentación de la enfermedad, aprendizaje luego de cada evento. La telemedicina facilita el tratamiento de EAP y debe ser tenida en cuenta por los grupos interdisciplinarios que atienden esta enfermedad. Recomendación 4. Los residentes de Obstetricia deben recibir instrucción en maniobras útiles para la prevención y el tratamiento del sangrado intraoperatorio masivo por placenta previa y EAP, tales como: la compresión manual de la aorta, el torniquete uterino, el empaquetamiento pélvico, el bypass retrovesical y la maniobra de Ward. Los conceptos básicos de diagnóstico y tratamiento de EAP deben incluirse en los programas de especialización en Ginecología y Obstetricia en Colombia. En los centros de referencia del EAP se deben ofrecer programas de entrenamiento a los profesionales interesados en mejorar sus competencias en EAP de manera presencial y virtual. Además, deben ofrecer soporte asistencial remoto (telemedicina) permanente a los demás hospitales en su región, en relación con pacientes con esa enfermedad. Recomendación 5. La finalización de la gestación en pacientes con sospecha de EAP y placenta previa, por imágenes diagnósticas, sin evidencia de sangrado vaginal activo, debe llevarse a cabo entre las semanas 34 y 36 6/7. El tratamiento quirúrgico debe incluir intervenciones secuenciales que pueden variar según las características de la lesión, la situación clínica de la paciente y los recursos disponibles. Las opciones quirúrgicas (histerectomía total y subtotal, manejo quirúrgico conservador en un paso y manejo expectante) deben incluirse en un protocolo conocido por todo el equipo interdisciplinario. En escenarios sin diagnóstico anteparto, es decir, ante un hallazgo intraoperatorio de EAP (evidencia de abultamiento violáceo o neovascularización de la cara anterior del útero), y con participación de personal no entrenado, se plantean tres situaciones: Primera opción: en ausencia de indicación de nacimiento inmediato o sangrado vaginal, se recomienda diferir la cesárea (cerrar la laparotomía antes de incidir el útero) hasta asegurar la disponibilidad de los recursos recomendados para llevar a cabo una cirugía segura. Segunda opción: ante indicación de nacimiento inmediato (por ejemplo, estado fetal no tranquilizador), pero sin sangrado vaginal o indicación de manejo inmediato de EAP, se sugiere realizar manejo en dos tiempos: se realiza la cesárea evitando incidir la placenta, seguida de histerorrafia y cierre de abdomen, hasta asegurar la disponibilidad de los recursos recomendados para llevar a cabo una cirugía segura. Tercera opción: en presencia de sangrado vaginal que hace imposible diferir el manejo definitivo de EAP, es necesario extraer el feto por el fondo del útero, realizar la histerorrafia y reevaluar. En ocasiones, el nacimiento del feto disminuye el flujo placentario y el sangrado vaginal se reduce o desaparece, lo que hace posible diferir el manejo definitivo de EAP. Si el sangrado significativo persiste, es necesario continuar con la histerectomía haciendo uso de los recursos disponibles: compresión manual de la aorta, llamado inmediato a los cirujanos con mejor entrenamiento disponible, soporte de grupos expertos de otros hospitales a través de telemedicina. Si una paciente con factores de riesgo para EAP (por ejemplo, miomectomía o cesárea previa) presenta retención de placenta posterior al parto vaginal, es recomendable confirmar la posibilidad de dicho diagnóstico (por ejemplo, realizando una ecografía) antes de intentar la extracción manual de la placenta. Conclusiones: esperamos que este primer consenso colombiano de EAP sirva como base para discusiones adicionales y trabajos colaborativos que mejoren los resultados clínicos de las mujeres afectadas por esta enfermedad. Evaluar la aplicabilidad y efectividad de las recomendaciones emitidas requerirá investigaciones adicionales.

ABSTRACT Introduction: Placenta accreta spectrum (PAS) is a condition associated with massive postpartum bleeding and maternal mortality. Management guidelines published in high income countries recommend the participation of interdisciplinary teams in hospitals with sufficient resources for performing complex procedures. However, some of the recommendations contained in those guidelines are difficult to implement in low and medium income countries. Objectives: The aim of this consensus is to draft general recommendations for the treatment of PAS in Colombia Materials and Methods: Twenty-three panelists took part in the consensus with their answers to 31 questions related to the treatment of PAS. The panelists were selected based on participation in two surveys designed to determine the resolution capabilities of national and regional hospitals. The modified Delphi methodology was used, introducing two successive discussion rounds. The opinions of the participants, with a consensus of more than 80 %, as well as implementation barriers and facilitators, were taken into consideration in order to issue the recommendations. Results: The consensus drafted five recommendations, integrating the answers of the panelists. Recommendation 1. Primary care institutions must undertake active search of PAS in patients with risk factors: placenta praevia and history of myomectomy or previous cesarean section. In case of ultrasound signs suggesting PAS, patients must be immediately referred, without a minimum gestational age, to hospitals recognized as referral centers. Online communication and care modalities may facilitate the interaction between primary care institutions and referral centers for PAS. The risks and benefits of telemedicine modalities must be weighed. Recommendation 2. Referral hospitals for PAS need to be defined in each region of Colombia, ensuring coverage throughout the national territory. It is advisable to concentrate the flow of patients affected by this condition in a few hospitals with surgical teams specifically trained in PAS, availability of specialized resources, and institutional efforts at improving quality of care with the aim of achieving better health outcomes in pregnant women with this condition. To achieve this goal, participants recommend that healthcare regulatory agencies at a national and regional level should oversee the process of referral for these patients, expediting administrative pathways in those cases in which there is no prior agreement between the insurer and the selected hospital or clinic. Recommendation 3. Referral centers for patients with PAS are urged to build teams consisting of a fixed group of specialists (obstetricians, urologists, general surgeons, interventional radiologists) entrusted with the care of all PAS cases. It is advisable for these interdisciplinary teams to use the "intervention bundle" model as a guidance for building PAS referral centers. This model comprises the following activities: service preparedness, disease prevention and identification, response to the occurrence of the disease, and debriefing after every event. Telemedicine facilitates PAS treatment and should be taken into consideration by interdisciplinary teams caring for this disease. Recommendation 4. Obstetrics residents must be instructed in the performance of maneuvers that are useful for the prevention and treatment of massive intraoperative bleeding due to placenta praevia and PAS, including manual aortic compression, uterine tourniquet, pelvic packing, retrovesical bypass, and Ward maneuver. Specialization Obstetrics and Gynecology programs in Colombia must include the basic concepts of the diagnosis and treatment of PAS. Referral centers for PAS must offer online and in-person training programs for professionals interested in improving their competencies in PAS. Moreover, they must offer permanent remote support (telemedicine) to other hospitals in their region for patients with this condition. Recommendation 5. Patients suspected of having PAS and placenta praevia based on imaging, with no evidence of active vaginal bleeding, must be delivered between weeks 34 and 36 6/7. Surgical treatment must include sequential interventions that may vary depending on the characteristics of the lesion, the clinical condition of the patient and the availability of resources. The surgical options (total and subtotal hysterectomy, one-stage conservative surgical management and watchful waiting) must be included in a protocol known by the entire interdisciplinary team. In situations in which an antepartum diagnosis is lacking, that is to say, in the face of intraoperative finding of PAS (evidence of purple bulging or neovascularization of the anterior aspect of the uterus), and the participation of untrained personnel, three options are considered: Option 1: In the absence of indication of immediate delivery or of vaginal delivery, the recommendation is to postpone the cesarean section (close the laparotomy before incising the uterus) until the recommended resources for safe surgery are secured. Option 2: If there is an indication for immediate delivery (e.g., non-reassuring fetal status) but there is absence of vaginal bleeding or indication for immediate PAS management, a two-stage management is suggested: cesarean section avoiding placental incision, followed by uterine repair and abdominal closure, until the availability of the recommended resources for safe surgery is ascertained. Option 3: In the event of vaginal bleeding that prevents definitive PAS management, the fetus must be delivered through the uterine fundus, followed by uterine repair and reassessment of the situation. Sometimes, fetal delivery diminishes placental flow and vaginal bleeding is reduced or disappears, enabling the possibility to postpone definitive management of PAS. In case of persistent significant bleeding, hysterectomy should be performed, using all available resources: manual aortic compression, immediate call to the surgeons with the best available training, telemedicine support from expert teams in other hospitals. If a patient with risk factors for PAS (e.g., myomectomy or previous cesarean section) has a retained placenta after vaginal delivery, it is advisable to confirm the possibility of such diagnosis (by means of ultrasound, for example) before proceeding to manual extraction of the placenta. Conclusions: It is our hope that this first Colombian consensus on PAS will serve as a basis for additional discussions and collaborations that can result in improved clinical outcomes for women affected by this condition. Additional research will be required in order to evaluate the applicability and effectiveness of these recommendations.

Placenta Accreta Spectrum Prenatal Diagnosis Performance: Are Ultrasound False-positive Results Acceptable in Limited-resources Settings? / Desempenho do diagnóstico pré-natal do espectro da placenta acreta: Os resultados falso-positivos do ultrassom são aceitáveis em ambientes com recursos limitados?

Abstract Objective The immediate referral of patients with risk factors for placenta accreta spectrum (PAS) to specialized centers is recommended, thus favoring an early diagnosis and an interdisciplinary management. However, diagnostic errors are frequent, even in referral centers (RCs). We sought to evaluate the performance of the prenatal diagnosis for PAS in a Latin American hospital. Methods A retrospective descriptive study including patients referred due to the suspicion of PAS was conducted. Data from the prenatal imaging studies were compared with the final diagnoses (intraoperative and/or histological). Results A total of 162 patients were included in the present study. The median gestational age at the time of the first PAS suspicious ultrasound was 29 weeks, but patients arrived at the PAS RC at 34 weeks. The frequency of false-positive results at referring hospitals was 68.5%. Sixty-nine patients underwent surgery based on the suspicion of PAS at 35 weeks, and there was a 28.9% false-positive rate at the RC. In 93 patients, the diagnosis of PAS was ruled out at the RC, with a 2.1% false-negative frequency. Conclusion The prenatal diagnosis of PAS is better at the RC. However, even in these centers, false-positive results are common; therefore, the intraoperative confirmation of the diagnosis of PAS is essential.

Resumo Objetivo Recomenda-se o encaminhamento imediato de pacientes com fatores de risco para espectro placentário acreta (PAS, na sigla em inglês) para centros especializados, favorecendo assim o diagnóstico precoce e o manejo interdisciplinar. No entanto, erros diagnósticos são frequentes, mesmo em centros de referência (CRs). Buscou-se avaliar o desempenho do diagnóstico pré-natal para PAS em um hospital latino-americano. Métodos Um estudo descritivo retrospectivo incluindo pacientes encaminhados por suspeita de SAP foi realizado. Os dados dos exames de imagem do pré-natal foram comparados com os diagnósticos finais (intraoperatórios e/ou histológicos). Resultados Foram incluídos 162 pacientes no presente estudo. A idade gestacional mediana no momento da primeira ultrassonografia suspeita de PAS foi de 29 semanas, mas as pacientes chegaram ao CR de PAS com 34 semanas. A frequência de resultados falso-positivos nos hospitais de referência foi de 68,5%. Sessenta e nove pacientes foram operadas com base na suspeita de PAS com 35 semanas e houve 28,9% de falso-positivos no CR. Em 93 pacientes, o diagnóstico de PAS foi descartado no CR, com frequência de falso-negativos de 2,1%. Conclusão O diagnóstico pré-natal de PAS é melhor no CR. Entretanto, mesmo nestes centros, resultados falso-positivos são comuns; portanto, a confirmação intraoperatória do diagnóstico de SAP é essencial.

Difficulties in the Management of Placenta Accreta Spectrum in Hospitals with Limited Resources / Dificuldades na gestão do espectro da placenta acreta em hospitais com recursos limitados

Abstract Objective Placenta accreta spectrum (PAS) is a serious diseases, and the recommendation is that the treatment is conducted in centers of excellence. Such hospitals are not easy to find in low- and middle-income countries. We seek to describe the process of prenatal diagnosis, surgical management, and postnatal histological analysis in a low-income country referral hospital with limited resources. Methods A descriptive, retrospective study was carried out including patients with a pre- or intraoperative diagnosis of PAS. The clinical results of the patients were studied as well as the results of the prenatal ultrasound and the correlation with the postnatal pathological diagnosis. Results In total, 129 patients were included. Forty-eight of them had a prenatal PAS ultrasound diagnosis (37.2%). In the remaining 81 (62.8%), the diagnosis was intraoperative. Although hysterectomy was performed in all cases, one-third of the patients (31%) did not have a histological study of the uterus. In 40% of the patients who had a histological study, PAS was not reported by the pathologist. Conclusion The frequency of prenatal diagnosis and the availability of postnatal histological studies were very low in the studied population. Surgical skill, favored by a high flow of patients, is an important factor to avoid complications in settings with limited resources.

Resumo Objetivo O espectro da placenta accreta é uma patologia grave, cujo tratamento é recomendado emcentros de excelência. Esses hospitais não são fáceis de encontrar em países de baixa e média renda. Procuramos descrever o processo de diagnóstico prénatal, tratamento cirúrgico, e análise histológica pós-natal em um hospital de referência de baixa renda com recursos limitados. Métodos Foi realizado um estudo descritivo, retrospectivo, incluindo pacientes com diagnóstico pré ou intraoperatório de espectro da placenta accreta. Foram estudados os resultados clínicos das pacientes, bem como os resultados da ultrassonografia prénatal e a correlação com o diagnóstico patológico pós-natal. Resultados No total, 129 pacientes foram incluídas. Quarenta e oito delas tiveramum diagnóstico de ultrassom do espectro da placenta accreta pré-natal (37,2%). Nos 81 (62,8%) restantes, o diagnóstico foi intraoperatório. Embora a histerectomia tenha sido realizada em todos os casos, um terço deles (31%) não tinha estudo histológico do útero. Em 40% dos pacientes que tiveram estudo histológico, o espectro da placenta accreta não foi relatado pelo patologista. Conclusão A frequência do diagnóstico pré-natal e a disponibilidade de estudos histológicos pós-natais foram muito baixas na população estudada. A habilidade cirúrgica, favorecida por um alto fluxo de pacientes, é um fator importante para evitar complicações em ambientes com recursos limitados.

Intra-abdominal aortic balloon occlusion in the management of placenta percreta / 中华医学杂志(英文版)

BACKGROUND@#Massive bleeding is the main concern for the management of placenta percreta (PP). Intra-abdominal aortic balloon occlusion (IABO) is one method for pelvic devascularization, but the efficacy of IABO is uncertain. This study aims to investigate the outcomes of IABO in PP patients.@*METHODS@#We retrospectively reviewed the clinical data of PP cases from six tertiary centers in China between January 2011 and December 2015. PP cases with/without the use of IABO were analyzed. Propensity score matching analysis was performed to reduce the effect of selection bias. Postpartum hemorrhage (PPH) and the rate of hysterectomy, as well as neonatal outcomes, were analyzed.@*RESULTS@#One hundred and thirty-two matched pairs of patients were included in the final analysis. Compared with the control group, maternal outcomes, including PPH (68.9% vs. 87.9%, χ2 = 13.984, P < 0.001), hysterectomy (8.3% vs. 65.2%, χ2 = 91.672, P < 0.001), and repeated surgery (1.5% vs. 12.1%, χ2 = 11.686, P = 0.001) were significantly reduced in the IABO group. For neonatal outcomes, Apgar scores at 1 minute (8.67 ± 1.79 vs. 8.53 ± 1.68, t = -0.638, P = 0.947) and 5 minutes (9.43 ± 1.55 vs. 9.53 ± 1.26, t = 0.566, P = 0.293) were not significantly different between the two groups.@*CONCLUSIONS@#IABO can significantly reduce blood loss, hysterectomies, and repeated surgeries. This procedure has not shown harmful effects on neonatal outcomes.

Acretismo placentário e suas complicações / Placental accretism and its complications

Acretismo é um termo genérico que significa uma invasão trofoblástica anormal da placenta em parte ou, mais raramente, na totalidade do miométrio, podendo inclusive chegar à serosa. Esse evento ocorre mais comumente em uma região de cicatriz uterina prévia, onde há um defeito na decidualização. A principal consequência disso é a necessidade frequente de histerectomia puerperal, acarretando grande morbidade materna. Este artigo apresenta o caso de uma gestante com placenta percreta, com acometimento vesical e de colo uterino que necessitou de histerectomia total. Além disso, no pós-operatório, apresentou fístula vesicoabdominal. O objetivo deste artigo é demonstrar as complicações do acretismo placentário e as maneiras de tentar reduzi-lo. O aumento nas proporções de nascimentos via parto cesariana, sem que haja evidências claras de que isso interfira na queda da mortalidade e/ou morbidade materna e neonatal, sugere que estejam sendo indicadas muito mais cesarianas que o necessário. Para redução nas taxas de cesariana e, consequentemente, das complicações dela, como nos casos de acretismo, é necessário repensar a cultura do cuidado da prática clínica em obstetrícia.(AU)

Accretism is a generic term that means an abnormal trophoblastic invasion of the placenta in part or, more rarely, in the entire myometrium, which may even reach the serosa. This event most commonly occurs in a region of previous uterine scar, where there is a decidualization defect. The main consequence of this is the frequent need for puerperal hysterectomy, causing great maternal morbidity. This article presents the case of a pregnant woman with placenta percreta, with bladder and uterine cervix involvement, who required hysterectomy. In addition, postoperatively, presented a vesico-abdominal fistula. The purpose of this article is to demonstrate the complications of placental accretism and ways to try it. The increase in the proportion of births via cesarean delivery, without clear evidences that this interferes with the decrease in maternal and neonatal mortality and/or morbidity, suggests that much more cesarean sections are being indicated than necessary. To reduce cesarean rates and consequently, its complications, as in cases of accretism, it is necessary to rethink the culture of care in clinical practice in obstetrics.(AU)

Protocolo para el manejo de placenta percreta con cesárea, embolización uterina e histerectomía diferida / Protocol for the management of percrete placenta with cesarean, uterine embolization, and deferred hysterectomy

Introducción. El objetivo de este artículo fue dar a conocer el protocolo institucional del manejo de la placenta percreta como un procedimiento varias horas después de la cesárea, con embolización de arterias placentarias de forma selectivas, previo a la práctica de la histerectomía, y presentar los resultados. Métodos. Estudio de serie de casos, donde se evaluaron las pacientes con placenta percreta, manejadas durante un año en un hospital de cuarto nivel de complejidad en la ciudad de Bogotá, D.C., Colombia. Se efectuó cesárea fúndica y se dejó la placenta in situ, 48 a 72 horas después se realizó embolización ultra selectiva y luego de 2 a 3 días se procedió a practicar la histerectomía vía abdominal. Resultados. Se evaluaron 5 pacientes, con paridad de 3,8 embarazos promedio, con diagnóstico de placenta percreta. El tiempo promedio de espera entre la embolización y la histerectomía fue de 1,6 días. No se presentaron complicaciones asociadas a la embolización, ni morbimortalidad materno fetal. Los volúmenes de sangrado en promedio durante la histerectomía de cada paciente fueron de 1160 ml. Conclusión. Existen datos limitados sobre el tratamiento óptimo del acretismo placentario. La sospecha diagnóstica permite planificar de forma favorable el manejo intraparto y, es por ello, que el surgimiento de nuevas técnicas, como la embolización de arterias placentarias, constituyen alternativas para un manejo más seguro de las pacientes.

Introduction. The objective of this article was to present the institutional protocol for the management of percrete placenta as a procedure several hours after cesarean section, with selective embolization of placental arteries, prior to the practice of hysterectomy, and to present the results. Methods. Case series study, where patients with percrete placenta were evaluated, managed for 1 year in a hospital of fourth level of complexity in the city of Bogotá, Colombia. A fundic cesarean section was performed and the placenta was left in situ, 48 to 72 hours later an ultra-selective embolization was performed, followed by an abdominal hysterectomy after 2 to 3 days.Results. Five patients with a diagnosis of placenta percreta were evaluated; mean wait time between embolization and hysterectomy was 1.6 days. There were no complications associated with embolization, or maternal-fetal morbidity and mortality. Average bleeding volumes during hysterectomy for each patient were 1160 ml. Conclusion. There are limited data on the optimal treatment of percrete placenta. Diagnostic suspicion allows for a favorable planning of intrapartum management and, for this reason, the emergence of new techniques, such as placental artery embolization, constitute alternatives for a safer management of patients.

Investigación de incidencia y complicaciones de histerectomía de emergencia en periparto / Investigation of Incidence and Complications of Emergency peripartum hysterectomy

Introducción: La histerectomía periparto de emergencia es una cirugía de alto riesgo, que se realiza mayoritariamente después de un parto vaginal o cesárea. Dada la importancia de las complicaciones y la mortalidad de las embarazadas para el sistema de salud, el presente estudio tuvo como objetivo investigar la incidencia y las complicaciones de la histerectomía periparto de emergencia en los hospitales generales y docentes de la Universidad de Ciencias Médicas de Zahedan. Materiales y Métodos: En este estudio descriptivo-analítico transversal, luego de obtener la aprobación del Comité de Ética, se investigó la historia clínica de las pacientes con histerectomía periparto de emergencia ingresadas en el hospital Ali ibn Abitaleb de Zahedan para la interrupción del embarazo durante 2017-2018. fueron estudiados. Después de evaluar las características demográficas, incluida la edad, la educación y la ocupación, se investigaron las causas y las complicaciones de la histerectomía de emergencia. Finalmente, los datos fueron analizados por el software SPSS.Resultados: De 2438 casos, se investigaron 50 casos de histerectomía. La edad media de las madres y el número medio de embarazos fue de 31,06 ± 5,21 y 5,72 ± 2,31, respectivamente. En este estudio, se registraron 35 cesáreas (70%) y 15 partos vaginales normales (30%), y solo el 2% condujo a una histerectomía de emergencia. Las causas más comunes de histerectomía de emergencia incluyeron placenta accreta (28%), atonía uterina (24%) y rotura uterina (20%). Las complicaciones también incluyeron fiebre (24%), coagulopatía (14%) e infección de la herida (12%). Conclusión: la placenta accreta y la atonía uterina son las causas más importantes de histerectomía. Las complicaciones más comunes de la histerectomía de emergencia son fiebre, coagulopatía e infecciones de heridas. Una disminución en el parto por cesárea electiva y un mayor fomento del parto vaginal natural podrían reducir significativamente la incidencia de histerectomía periparto y la mortalidad materna

Introduction: The emergency peripartum hysterectomy is a high-risk surgery, which is mostly performed after vaginal delivery or Caesarean section. Given the importance of complications and mortality of pregnant mothers for the health system, the present study aimed to investigate the incidence and complications of emergency peripartum hysterectomy in general and teaching hospitals of Zahedan University of Medical Sciences. Materials and Methods: In this cross-sectional descriptive-analytic study, after obtaining the Ethics Committee approval, the medical record of patients with emergency peripartum hysterectomy admitted to Ali ibn Abitaleb hospital of Zahedan for pregnancy termination during 2017-2018 were investigated. were studied. After evaluating demographic characteristics, including age, education, and occupation, causes, and complications of emergency hysterectomy were investigated. Finally, data were analyzed by SPSS software. Results: Out of 2438 cases, 50 cases of hysterectomy were investigated. The mean age of mothers and the average number of pregnancies was 31.06±5.21 and 5.72±2.31, respectively. In this study, 35 caesarean sections (70%) and 15 normal vaginal delivery (30%) were recorded, with only 2% leading to emergency hysterectomy. The most common causes of emergency hysterectomy included placenta accreta (28%), uterine atony (24%), and uterine rupture (20%). The complications also included fever (24%), coagulopathy (14%), and wound infection (12%). Conclusion: Placenta accreta and uterine atony are the most important causes of hysterectomy. The most common complications of emergency hysterectomy are fever, coagulopathy, and wound infections. A decrease in elective caesarean delivery and further encouraging to natural vaginal delivery could significantly reduce the incidence of peripartum hysterectomy and maternal mortality

Acretismo placentario con compromiso vesical en altura / Placental accreta with bladder involvement in height

Introducción: El acretismo placentario es una complicación obstétrica compleja. Según el grado de profundidad se clasifica en placenta acreta, increta y percreta, siendo esta última una presentación rara. Objetivo: Reportar la evolución clínica quirúrgica de una paciente con diagnóstico de acretismo placentario (placenta percreta) con compromiso vesical. Caso clínico: Paciente segundigesta de 28 años, con antecedente de una cesárea anterior hace aproximadamente 4 años, ingresa por consultorio externo debido a estudio ecográfico sugestivo de probable acretismo placentario con invasión vesical realizada en el tercer trimestre, motivo por el cual es hospitalizada para un mejor estudio y tratamiento. Sometida a cirugía por equipo multidisciplinario, a cesárea-histerectomía modificada, con resección parcial de vejiga y ligadura de hipogástricas, con corta estancia en Unidad de Cuidados Intensivos y hospitalización sin complicaciones urológicas posteriores. Conclusiones: La detección temprana permite una planificación preoperatoria adecuada con equipo multidisciplinario especializado, considerando la participación temprana del urólogo en la toma de decisiones(AU)

Introduction: Placental accreta is a complex obstetric complication. According to the degree of depth, it is classified into placenta accreta, increta and percreta, the latter being a rare presentation. Objective: To report the surgical clinical evolution of a patient with a diagnosis of placental accreta (placenta percreta) with bladder involvement. Clinical case report: A 28-year-old second-pregnant patient, with a history of a previous cesarean section approximately 4 years ago, was admitted to an outpatient clinic due to a probable placental accreta with bladder invasion performed in the third trimester which was suggestive in ultrasound study. She was hospitalized for better study and treatment and she underwent surgery by a multidisciplinary team. A modified cesarean section-hysterectomy, with partial bladder resection and hypogastric ligation, with a short stay in the Intensive Care Unit and hospitalization without subsequent urological complications. Conclusions: Early detection allows adequate preoperative planning with a specialized multidisciplinary team, considering the early participation of the urologist in decision-making(AU)

Peripartum Hysterectomies over a Fifteen-year Period / Histerectomias periparto ao longo de um período de quinze anos

Abstract Objective To determine the indications and outcomes of peripartum hysterectomies performed at Hospital de Clínicas de Porto Alegre (a university hospital in Southern Brazil) during the past 15 years, and to analyze the clinical characteristics of the women submitted to this procedure. Methods A cross-sectional study of 47 peripartum hysterectomies from 2005 to 2019. Results The peripartum hysterectomies performed in our hospital were indicated mainly due to placenta accreta or suspicion thereof (44.7% of the cases), puerperal hemorrhage without placenta accreta (27.7%), and infection (25.5%). Total hysterectomies accounted for 63.8% of the cases, andwefound no differencebetween total versus subtotal hysterectomies in the studied outcomes. Most hysterectomies were performed within 24 hours after delivery, and they were associated with placenta accreta, placenta previa, and older maternal age. Conclusion Most (66.0%) patients were admitted to the intensive care unit (ICU). Those who did not need it were significantly older, and had more placenta accreta, placenta previa, or previous Cesarean delivery.

Resumo Objetivo Determinar as indicações e os desfechos das histerectomias periparto realizadas no Hospital de Clínicas de Porto Alegre nos últimos 15 anos, bem como analisar as características clínicas das mulheres submetidas a esse procedimento. Métodos Estudo transversal de 47 histerectomias periparto realizadas no período de 2005 a 2019. Resultados Em nosso hospital, as histerectomias periparto foram indicadas principalmente por acretismo placentário ou sua suspeita (44,7% dos casos), hemorragia puerperal sem acretismo placentário (27,7%), e infecção (25,5%). Histerectomias totais corresponderam a 63,8% dos casos, e não encontramos diferença entre histerectomia total e subtotal para os desfechos estudados. Amaioria das histerectomias foi realizada dentro de 24 horas após o parto, o que estava associado a acretismo placentário, placenta prévia, e idade materna mais avançada. Conclusão A maioria (66,0%) das mulheres necessitou de internação em unidade de terapia intensiva (UTI); aquelas que não necessitaram eram significativamente mais velhas, e tinham mais acretismo placentário, placenta prévia, ou cesárea prévia.

Correlation of An Ultrasonic Scoring System and Intraoperative Blood Loss in Placenta Accreta Spectrum Disorders: A Retrospective Cohort Study / 生物医学与环境科学（英文）

Objective@#This study aims to investigate the correlation of an ultrasonic scoring system with intraoperative blood loss (IBL) in placenta accreta spectrum (PAS) disorders.@*Methods@#A retrospective cohort study was conducted between January 2015 and November 2019. Clinical data for patients with PAS have been obtained from medical records. Generalized additive models were used to explore the nonlinear relationships between ultrasonic scores and IBL. Logistic regressions were used to determine the differences in the risk of IBL ≥ 1,500 mL among groups with different ultrasonic scores.@*Results@#A total of 332 patients participated in the analysis. Generalized additive models showed a significant positive correlation between score and blood loss. The amount of IBL was increased due to the rise in the ultrasonic score. All cases were divided into three groups according to the scores (low score group: ≤ 6 points, @*Conclusions@#The risk of blood loss equal to or greater than 1,500 mL increases further when ultrasonic score greater than or equal to 10 points, the preparation for transfusion and referral mechanism should be considered.