Associação entre as condições de nascimento e a densidade mineral óssea de adultos das coortes de nascimentos de 1982 e 1993 de Pelotas, Rio Grande do Sul, Brasil / Association between birth conditions and bone mineral density in adults from the 1982 and 1993 birth cohorts in Pelotas, Rio Grande do Sul State, Brazil / Asociación entre las condiciones de nacimiento y la densidad mineral ósea de adultos de las cohortes de nacimiento de 1982 y 1993 en Pelotas, Rio Grande do Sul, Brasil

Resumo: Este estudo avaliou a associação do peso ao nascer, idade gestacional e crescimento intrauterino com a densidade mineral óssea (DMO) aos 22 e 30 anos, nas coortes de nascimentos de 1982 e 1993 de Pelotas, Rio Grande do Sul, Brasil. A DMO foi medida por absorciometria por raios X com dupla energia (DXA), a associação foi avaliada usando análise de variância e a regressão linear múltipla para o controle de confundimento por: sexo, renda familiar ao nascer, tabagismo materno na gestação, escolaridade materna, cor da pele materna e índice de massa corporal pré-gestacional. Foi testado se a gordura corporal na vida adulta era mediadora da associação analisada, por meio da G-computation Formula. Foram avaliados 6.803 participantes das coortes de 1982 e 1993, aos 30 e 22 anos, respectivamente. O peso ao nascer teve associação com a DMO em todos os sítios, com maior diferença no colo femoral. Os nascidos com menos de 2.000g apresentaram, em média, -0,036g/cm2 (IC95%: -0,064; -0,008) de DMO no colo femoral em comparação àqueles com mais de 3.500g. Aqueles com escore-z de crescimento intrauterino com pelo menos 1,28 desvio padrão abaixo da média apresentaram, em média, -0,013g/cm2 (IC95%: -0,024; -0,002) de DMO na coluna lombar, em relação aos com escore-z acima da média. A análise de mediação mostrou que gordura corporal na idade adulta não mediou a associação. As condições de nascimento foram associadas com a densidade mineral óssea na vida adulta, e a identificação dos fatores precoces relacionados à perda de DMO é essencial devido à inversão demográfica em progresso em países de média e baixa renda.

Abstract: This study assessed the association of birth weight, gestational age, and intrauterine growth with bone mineral density (BMD) at 22 and 30 years of age in the 1982 and 1993 birth cohorts in Pelotas, Rio Grande do Sul State, Brazil. BMD was measured by dual-energy X-ray absorptiometry (DXA) and the association was assessed using analysis of variance. Multiple linear regression was used to control for confounding factors: sex; household income at birth; maternal smoking during pregnancy; maternal schooling; maternal ethnicity/skin color; and pre-pregnancy body mass index. The study tested whether body fat in adulthood was a mediator of the association analyzed, using the G-computation Formula. A total of 6,803 participants from the 1982 and 1993 cohorts were evaluated at 30 and 22 years of age, respectively. Birth weight was associated with BMD at all sites, with a greater difference at the femoral neck. Individuals born weighing less than 2,000g had on average -0.036g/cm2 (95%CI: -0.064; -0.008) of BMD in the femoral neck than individuals weighing more than 3,500g. Individuals with an intrauterine growth z-score at least 1.28 standard deviation below the mean had an average of -0.013g/cm2 (95%CI: -0.024; -0.002) of BMD in the lumbar spine compared with individuals with an above-average z-score. The mediation analysis showed that body fat in adulthood did not mediate the association. Birth conditions have been associated with BMD in adulthood and the identification of early factors related to bone loss is essential due to the demographic inversion that has been taking place in low- and middle-income countries.

Resumen: Este estudio evaluó la asociación del peso al nacer, la edad gestacional y el crecimiento intrauterino con la densidad mineral ósea (DMO) a los 22 y 30 años de edad, en las Cohortes de Nacimiento de 1982 y 1993 de Pelotas, Rio Grande do Sul, Brasil. La DMO se midió mediante absorciometría de rayos X de doble emisión (DXA), y la asociación se evaluó mediante ANOVA y regresión lineal múltiple para controlar la confusión por sexo, ingresos familiares al nacer, tabaquismo materno durante el embarazo, escolaridad materna, color de piel materno e índice de masa corporal antes del embarazo. Se comprobó si la grasa corporal en la edad adulta era un mediador de la asociación analizada, utilizando G-computation Formula. Se evaluaron 6.803 participantes de las cohortes 82 y 93, de 30 y 22 años, respectivamente. El peso al nacer se asoció con la DMO en todos los sitios, con la mayor diferencia en el cuello femoral. Los nacidos con un peso inferior a 2.000g tuvieron una media de -0,036g/cm2 (IC95%: -0,064; -0,008) de DMO en el cuello femoral, que aquellos con más de 3.500g. Aquellos con una puntuación z de crecimiento intrauterino de al menos 1,28 desviaciones estándar por debajo de la media presentaron un promedio de -0,013g/cm2 (IC95%: -0,024; -0,002) de DMO en la columna lumbar, con relación a aquellos con un puntaje z superior a la media. El análisis de mediación mostró que la grasa corporal en la edad adulta no medió la asociación. Las condiciones de nacimiento se asociaron con la DMO en la edad adulta, y la identificación temprana de factores relacionados con la pérdida de DMO es esencial debido a la inversión demográfica que ha estado ocurriendo en los países de ingresos medios y bajos.

Resultados perinatales del crecimiento intrauterino restringido. Cienfuegos, 2022

Fundamento: el crecimiento intrauterino restringido necesita un manejo intensivo prenatal para determinar el estado fetal y el tiempo del parto. Objetivo: describir los resultados perinatales del crecimiento intrauterino restringido. Métodos: estudio de serie de casos desarrollado en el Hospital de Cienfuegos, en el 2022. Se estudiaron las variables: tipo de crecimiento intrauterino retardado, resultados del ultrasonido Doppler en vasos maternos y fetales, enfermedades que complicaron el embarazo, tipo de parto, peso y tiempo gestacional al parto, resultados adversos perinatales. Se comparó la distribución de variables de importancia en la clínica con los resultados adversos perinatales. Resultados: el crecimiento restringido afectó al 4,7 % de los partos, el 25 % fue de inicio precoz; el 17,3 % presentó preeclampsia, el 41,3 % tuvo IPM ArUt >95 p. El 14,4 % de los fetos presentó alteraciones en los flujos del Doppler (ICP<5 p con 42 %); el 98 % tuvo crecimiento restringido grado I. El 19 % de las gestantes necesitó interrupción del embarazo en semana 34 o antes. Se realizó cesárea al 44,6 % y el 18,7 % de los recién nacidos vivos necesitó ingreso en UCIN; hubo tres muertes neonatales y dos muertes fetales tardías. Los resultados adversos perinatales fueron más frecuentes en fetos con ICP<5 p, el parto antes de las 34 semanas y el peso al nacer menor de 1500 g (p<0,05). Conclusiones: la alteración del índice cerebro placentario en el feto, nacer antes de las 34 semanas y peso inferior a 1500 g al nacer, eleva el riesgo adverso perinatal en los fetos/neonatos con crecimiento intrauterino restringido.

Foundation: restricted intrauterine growth requires intensive prenatal management to determine fetal status and delivery time. Objective: To describe the perinatal outcomes of restricted intrauterine growth. Methods: case series study developed at the Cienfuegos Hospital in 2022. The studied variables were: type of delayed intrauterine growth, results of Doppler ultrasound in maternal and fetal vessels, diseases that complicated the pregnancy, type of delivery, weight and gestational time to delivery, adverse perinatal outcomes. The distribution of clinically important variables was compared with adverse perinatal outcomes. Results: delayed growth affected 4.7% of births, 25% had early onset; 17.3% had preeclampsia, 41.3% had MPI ArUt >95 p. 14.4% of fetuses presented alterations in Doppler flows (ICP<5 p with 42%); 98% had restricted growth grade I. 19% of pregnant women needed termination of pregnancy at week 34 or before. A cesarean section was performed in 44.6% and 18.7% of live newborns required admission to the NICU; there were three neonatal deaths and two late fetal deaths. Adverse perinatal outcomes were more frequent in fetuses with ICP<5 p, delivery before 34 weeks and birth weight less than 1500 g (p<0.05). Conclusions: the alteration of the cerebroplacental index in the fetus, birth before 34 weeks and weight less than 1500 g at birth, increases the adverse perinatal risk in fetuses/neonates with restricted intrauterine growth.

La suplementación con zinc favorece el crecimiento intrauterino en fetos de ratas diabéticas / Zinc supplementation favours intrauterine growth in diabetic rat fetuses

La deficiencia de zinc puede ser un factor mediador en los trastornos del crecimiento fetal en la descendencia de la gestante diabética. Se persiguió como objetivo determinar la influencia de un suplemento con zinc sobre la morfometría externa corporal y craneofacial en fetos de ratas diabéticas con hiperglucemias moderadas. Durante la gestación, ratas diabéticas y controles fueron suplementadas por vía oral con sulfato de zinc (50 mg/kg-pc) o no recibieron tratamiento. Los fetos descendientes del grupo diabético suplementado presentaron niveles similares a los controles en las variables de crecimiento somático determinadas. La suplementación con zinc a ratas diabéticas favoreció el crecimiento intrauterino en los fetos. Los resultados de esta investigación constituyen aportes para dilucidar los requerimientos de zinc que permitan prevenir los trastornos del crecimiento fetal en la descendencia de gestantes diabéticas.

Zinc deficiency may be a mediating factor in fetal growth disorders in the offspring of diabetic pregnant women. The objective was to determine the influence of a zinc supplement on external body and craniofacial morphometry in diabetic rat fetuses with moderate hyperglycemia. During gestation, diabetic and control rats were orally supplemented with zinc sulphate (50 mg/kg bw) or received no treatment. The fetuses descendants of the supplemented diabetic group had levels similar to the control ones in the determined somatic growth variables. Zinc supplementation to diabetic rats favoured intrauterine growth in fetuses. The results of this research constitute a contribution to elucidate zinc requirements that allow preventing fetal growth disorders in the offspring of diabetic pregnant women.

Prediction of Perinatal and Neurodevelopmental Outcomes in Newborns with a Birth Weight below the 3rd Percentile: Performance of Two International Curves - Prospective Cohort from a Brazilian City / Predição de resultados perinatais e de neurodesenvolvimento em recém-nascidos com peso ao nascer abaixo do percentil 3: Desempenho de duas curvas internacionais - coorte prospectiva de uma cidade brasileira

Abstract Objectives To evaluate the performance of Intergrowth-21 st (INT) and Fetal Medicine Foundation (FMF) curves in predicting perinatal and neurodevelopmental outcomes in newborns weighing below the 3rd percentile. Methods Pregnant women with a single fetus aged less than 20 weeks from a general population in non-hospital health units were included. Their children were evaluated at birth and in the second or third years of life. Newborns (NB) had their weight percentiles calculated for both curves. Sensitivity, specificity, positive (PPV) and negative predictive value (NPV), and area under the ROC curve (ROC-AUC) for perinatal outcomes and neurodevelopmental delay were calculated using birth weight < 3rd percentile as the cutoff. Results A total of 967 children were evaluated. Gestational age at birth was 39.3 (± 3.6) weeks and birth weight was 3,215.0 (± 588.0) g. INT and FMF classified 19 (2.4%) and 49 (5.7%) newborns below the 3rd percentile, respectively. The prevalence of preterm birth, tracheal intubation >24 hours in the first three months of life, 5th minute Apgar <7, admission to a neonatal care unit (NICU admission), cesarean section rate, and the neurodevelopmental delay was 9.3%, 3.3%, 1.3%, 5.9%, 38.9%, and 7.3% respectively. In general, the 3rd percentile of both curves showed low sensitivity and PPV and high specificity and NPV. The 3rd percentile of FMF showed superior sensitivity for preterm birth, NICU admission, and cesarean section rate. INT was more specific for all outcomes and presented a higher PPV for the neurodevelopmental delay. However, except for a slight difference in the prediction of preterm birth in favor of INT, the ROC curves showed no differences in the prediction of perinatal and neurodevelopmental outcomes. Conclusion Birth weight below the 3rd percentile according to INT or FMF alone was insufficient for a good diagnostic performance of perinatal and neurodevelopmental outcomes. The analyzes performed could not show that one curve is better than the other in our population. INT may have an advantage in resource contingency scenarios as it discriminates fewer NB below the 3rd percentile without increasing adverse outcomes.

Resumo Objetivos Avaliar o desempenho das curvas de Intergrowth-21 st (INT) e Fetal Medicine Foundation (FMF) na predição de resultados perinatais e de neurodesenvolvimento de recém-nascidos com peso abaixo do percentil 3. Métodos Foram incluídas gestantes de feto único com idade inferior a 20 semanas de uma população geral em unidades de saúde não hospitalares. Seus filhos foram avaliados ao nascimento e no segundo ou terceiro anos de vida. Os recém-nascidos tiveram seus percentis de peso calculados para ambas as curvas. Sensibilidade, especificidade, valor preditivo positivo (VPP) e negativo (VPN) e área sob a curva ROC (ROC-AUC) foram calculados para desfechos perinatais e atraso de neurodesenvolvimento considerando o peso ao nascimento menor que o percentil 3 como ponto de corte. Resultados Um total de 967 crianças foram avaliadas ao nascimento e no segundo ou terceiro anos de vida. A idade gestacional ao nascer foi de 39,3 (±3,6) semanas e o peso ao nascimento foi de 3.215,0 (±588,0) g. INT e FMF classificaram 19 (2,4%) e49 (5,7%) recém-nascidos abaixo do percentil 3, respectivamente. A prevalência de parto prétermo, intubação traqueal > 24 horas nos primeiros três meses de vida, Apgar de 5° minuto < 7, internação em unidade de terapia intensiva neonatal (internação em UTIN), taxa de cesariana e atraso de neurodesenvolvimento foi 9,3%, 3,3%, 1,3%, 5,9%, 38,9% e 7,3% respectivamente. Em geral, o percentil 3 de ambas as curvas apresentou baixa sensibilidade e VPP e alta especificidade e VPN. O percentil 3 de FMF mostrou sensibilidade superior para parto prematuro, internação em UTIN e taxa de cesariana. INT foi mais específico para todos os desfechos e apresentou maior VPP para o atraso do neurodesenvolvimento. Entretanto, exceto por uma pequena diferença na predição de parto pré-termo em favor de INT, as curvas ROC não mostraram diferenças na predição de resultados perinatais e de desenvolvimento neurológico. Conclusão O peso ao nascer abaixo do percentil 3 segundo INT ou FMF isoladamente foi insuficiente para um bom desempenho diagnóstico de desfechos perinatais e de neurodesenvolvimento. As análises realizadas não puderam mostrar que uma curva é melhor que a outra em nossa população. INT pode ter vantagem em cenários de contingência de recursos, pois discrimina menos recém-nascidos abaixo do percentil 3 sem aumentar os desfechos adversos.

Maternal, obstetric, and fetal Doppler characteristics in a high-risk population: prediction of adverse perinatal outcomes and of cesarean section due to intrapartum fetal compromise / Características maternas, obstétricas e do Doppler fetal em uma população de alto risco: predição de desfechos perinatais adversos e de cesariana por comprometimento fetal intraparto

Abstract Objective: To evaluate the capacity of fetal Doppler, maternal, and obstetric characteristics for the prediction of cesarean section due to intrapartum fetal compromise (IFC), a 5-min Apgar score < 7, and an adverse perinatal outcome (APO), in a high-risk population. Materials and Methods: This was a prospective cohort study involving 613 singleton pregnant women, admitted for labor induction or at the beginning of spontaneous labor, who underwent Doppler ultrasound within the last 72 h before delivery. The outcome measures were cesarean section due to IFC, a 5-min Apgar score < 7, and any APO. Results: We found that maternal characteristics were neither associated with nor predictors of an APO. Abnormal umbilical artery (UA) resistance index (RI) and the need for intrauterine resuscitation were found to be significant risk factors for cesarean section due to IFC (p = 0.03 and p < 0.0001, respectively). A UA RI > the 95th percentile and a cerebroplacental ratio (CPR) < 0.98 were also found to be predictors of cesarean section due to IFC. Gestational age and a UA RI > 0.84 were found to be predictors of a 5-min Apgar score < 7 for newborns at < 29 and ≥ 29 weeks, respectively. The UA RI and CPR presented moderate accuracy in predicting an APO, with areas under the ROC curve of 0.76 and 0.72, respectively. Conclusion: A high UA RI appears to be a significant predictor of an APO. The CPR seems to be predictive of cesarean section due to IFC and of an APO in late preterm and term newborns.

Resumo Objetivo: Avaliar a capacidade do Doppler fetal e características materno-obstétricas na predição de cesariana por comprometimento fetal intraparto (CFI), índice de Apgar de 5º min < 7 e desfecho perinatal adverso (DPA) em uma população de alto risco. Materiais e Métodos: Estudo de coorte prospectivo envolvendo 613 parturientes admitidas para indução ou em início de trabalho de parto espontâneo que realizaram ultrassonografia Doppler nas 72 horas anteriores ao parto. Os desfechos foram cesariana por CFI, índice de Apgar de 5º min < 7 e DPA. Resultados: As características maternas não foram associadas nem preditoras de DPA. Índice de resistência (IR) da artéria umbilical anormal (p = 0,03) e necessidade de medidas de ressuscitação intrauterina (p < 0,0001) permaneceram como fatores de risco significativos para cesariana por CFI. IR AU > 95º e razão cerebroplacentária (RCP) < 0,98 foram preditores de cesariana. Idade gestacional e IR AU > 0,84 foram os preditores de índice de Apgar de 5º min < 7 para recém-nascidos < 29 e ≥ 29 semanas, respectivamente. IR AU e RCP apresentaram acurácia moderada na predição de DPA (área sob a curva ROC de 0,76 e 0,72, respectivamente). Conclusão: IR UA mostrou-se preditor significativo de DPA. RCP revelou-se possível preditora de cesariana por CFI e DPA em recémnascidos prematuros tardios e a termo.

Displasia broncopulmonar y severa restricción del crecimiento intrauterino en neonato de 850 gramos al nacer

Introducción: La displasia broncopulmonar es una enfermedad pulmonar crónica de inicio en edad neonatal. La restricción del crecimiento intrauterino se define como fracaso del feto para alcanzar su potencial de crecimiento genéticamente determinado. Objetivo: Describir el manejo interdisciplinario de la displasia broncopulmonar y revisar la literatura sobre el tema. Caso clínico: Se presenta el caso de un neonato hijo de madre adolescente producto de su primera gestación, la cual llevó un adecuado control prenatal. Presentó restricción del crecimiento intrauterino grado IV caracterizada por alteraciones en el ultrasonido Doppler en relación con insuficiencia placentaria severa y oligohidramnios, motivo por el cual se interrumpe el embarazo por parto distócico por cesárea a las 34+1 semanas, con bolsa rota al nacer, líquido amniótico claro y muy escaso. Nace en buenas condiciones clínicas con 850 gramos de peso. En los primeros días de vida, comenzó con manifestaciones clínicas de sepsis; se diagnosticó enterocolitis necrotizante luego presentó un súbito deterioro clínico debido a la aparición de hemorragia pulmonar. Con 695 gramos de peso, se inició tratamiento con ventilación mecánica invasiva, la cual se prolongó por un período de 30 días. Después del destete de la ventilación mecánica, el niño mantuvo una dependencia del oxígeno durante 71 días más; como manifestación de la displasia broncopulmonar. Se realizaron interconsultas con especialistas en Cardiología, Hematología, Imagenología, Nutrición, Inmunología y Genética; y, en colectivo, se decidió, la terapéutica desarrollada. El neonato evolucionó satisfactoriamente. Conclusiones: Se mostró el manejo interdisciplinario de la displasia broncopulmonar. Se consultó la bibliografía actualizada.

Introduction: Bronchopulmonary dysplasia is a chronic lung disease of neonatal age onset. Intrauterine growth restriction is defined as failure of the fetus to reach its genetically determined growth potential. Objective: To describe the interdisciplinary management of bronchopulmonary dysplasia and review the literature on the subject. Case report: The case of a newborn son of an adolescent mother, product of her first pregnancy, which had an adequate prenatal control, is presented. She presented grade IV intrauterine growth restriction characterized by alterations in the Doppler ultrasound in relation to severe placental insufficiency and oligohydramnios, which is why the pregnancy was terminated due to dystocic delivery by cesarean section at 34+1 weeks, with a ruptured bag at birth, liquid clear and very scanty amniotic. He was born in good clinical condition with a weight of 850 grams. In the first days of life, he began with clinical manifestations of sepsis; necrotizing enterocolitis was diagnosed, then he presented a sudden clinical deterioration due to the appearance of pulmonary hemorrhage. Weighing 695 grams, treatment with invasive mechanical ventilation was started, which lasted for a period of 30 days. After weaning from mechanical ventilation, the child remained oxygen dependent for a further 71 days; as a manifestation of bronchopulmonary dysplasia. Interconsultations were made with specialists in Cardiology, Hematology, Imaging, Nutrition, Immunology and Genetics; and, collectively, it was decided, the therapy developed. The neonate evolved satisfactorily. Conclusions: The interdisciplinary management of bronchopulmonary dysplasia was shown. The updated literature was consulted.

Restricción del crecimiento intrauterino y enfermedades no transmisibles durante las edades pediátricas

Introducción: En la aparición de las enfermedades crónicas durante las edades pediátricas y la adolescencia, la restricción del crecimiento intrauterino se considera un factor clave. Objetivo: Determinar la relación entre la restricción del crecimiento intrauterino y las enfermedades no trasmisibles durante las edades pediátricas. Métodos: Se realizó una revisión narrativa con búsqueda bibliográfica en Pubmed, SciELO, LILACS y Google académico en los últimos cinco años sobre el tema que se trata. Se examinaron artículos originales, de revisión y capítulos de libros. Se utilizaron las palabras clave: retardo del crecimiento fetal, factores de riesgo cardiometabólicoy atención integrada a las enfermedades prevalentes de la infancia. Se descartaron aquellos artículos no pertinentes o que tuvieran deficiencias metodológicas notables. Análisis y síntesis de la información: Se expusieron las definiciones de "pequeño para la edad gestacional" y "restricción del crecimiento intrauterino", se mostró la clasificación más actualizada, se mencionaron las enfermedades que aparecen en la infancia en estos recién nacidos de riesgo y se señalaron sus mecanismos. Conclusiones: El antecedente de restricción del crecimiento intrauterino se relaciona con alteraciones del crecimiento pondoestatural, del neurodesarrollo; el síndrome metabólico; las afecciones cardiovasculares; las enfermedades endocrinas, hepáticas, respiratorias, del sistema inmunológico y renales, los trastornos auditivos y de la visión. Estas afecciones se presentan en etapas tempranas de la vida como la infancia y la adolescencia.

Introduction: In the occurrence of chronic diseases during pediatric ages and adolescence, intrauterine growth restriction is considered a key factor. Objective: To determine the relationship between intrauterine growth restriction and noncommunicable diseases during pediatric ages. Methods: A narrative review was performed with a literature search in Pubmed, SciELO, LILACS and Google Scholar in the last five years on the topic under discussion. Original articles, review articles and book chapters were examined. The keywords used were: fetal growth retardation, cardiometabolic risk factors, integrated care for prevalent childhood diseases. Articles that were not relevant or had notable methodological deficiencies were discarded. Analysis and synthesis of the information: The definitions of "small for gestational age" and "intrauterine growth restriction" were exposed, the most updated classification was shown, the diseases that appear during infancy in these at-risk newborns were mentioned and their mechanisms were pointed out. Conclusions: The history of intrauterine growth restriction is related to alterations of pondoestatural growth, neurodevelopment, metabolic syndrome, cardiovascular conditions, endocrine, hepatic, respiratory, immune system, renal, hearing and vision disorders. These conditions surface in early stages of life such as infancy and adolescence.

Current status and prospect of pravastatin in pregnancy / 中华围产医学杂志

Cholesterol-lowing statins such as pravastatin have been contraindicated in pregnant women for a long time, but recent clinical evidence has demonstrated its safety. Studies have found that pravastatin can correct the imbalance in angiogenesis, reduce vascular inflammation and improve the conditions in patients with placental and maternal vascular dysfunction-related diseases, such as preeclampsia, fetal growth restriction and antiphospholipid syndrome. However, universal administration of pravastatin in pregnancy still requires more evidence on its safety from human clinical trials with larger sample sizes. This article reviews the current situation and prospect of pravastatin in pregnancy.

Massive subchorionic thrombohematoma at umbilical cord insertion: a case report / 中华围产医学杂志

This article reported the management and outcome of a pregnant woman diagnosed with massive subchorionic thrombohematoma at the umbilical cord insertion. The patient was found to have a large placental hematoma below the insertion site of the umbilical cord at 28 weeks of gestation by ultrasound and MRI. Fetal growth and the condition of the placenta were closely monitored thereafter. The patient was delivered with good maternal and infant outcomes through emergency cesarean section at 33 +5 weeks of gestation due to a significantly enlarged hematoma with abnormal umbilical blood flow.

Effects of selective feticide by radiofrequency ablation and risk factors for prognosis in 75 twins complicated by selective intrauterine growth restriction / 中华围产医学杂志

Objective:To analyze the effects of selective feticide by radiofrequency ablation (RFA) and the risk factors for adverse pregnancy outcomes in twins complicated by selective intrauterine growth restriction (sIUGR) and evaluate the neurodevelopment in live births during a short-term follow-up.Methods:This study retrospectively enrolled 75 twins with sIUGR who underwent RFA for selective feticide and were delivered in the First Affiliated Hospital of Sun Yat-sen University between January 1, 2017 and March 31, 2022. According to the gestational age at the procedure, they were divided into three groups including 16-19 +6 weeks of gestation (Group A, n=16), 20-23 +6 weeks of gestation (Group B, n=44) and ≥24 weeks of gestation (Group C, n=15). They were also grouped according to the presence or absence of twin-twin transfusion syndrome (TTTS): sIUGR with TTTS group ( n=36) and isolated sIUGR group ( n=39). The 39 cases in the isolated sIUGR group were further divided into three groups according to the Doppler flow in the smaller co-twin: type Ⅰ ( n=3), type Ⅱ ( n=27) and type Ⅲ ( n=9). According to pregnancy outcomes, the 75 cases were divided into adverse pregnancy outcome group ( n=49) and non-adverse pregnancy outcome group ( n=26). Statistical analysis was performed using two independent sample t-test, one-way analysis of variance and LSD test, nonparametric test and Nemenyi test, as well as Chi-square test and Fisher's exact test to compare the difference in clinical characteristics and perinatal outcomes among groups. Kaplan-Meier survival curves and Log-rank test were used to analyze the duration of pregnancy after the procedure. Univariate logistic regression analysis was used to identify the risk factors for adverse pregnancy outcomes. Results:(1) The gestational age at the time of procedure was (21.9±2.3) weeks (16.6-26.0 weeks) for all cases. The intertwin estimated fetal weight discordance (ΔEFW) was less and the duration of RFA was shorter in group A than in group B or C [(27.8±8.4)% vs (36.2±12.0)% and (39.8±15.5)%; 7 min (5-14 min) vs 10 min (5-16 min) and 12 min (8-18 min); LSD test or Nemenyi test, P<0.017]. The incidence of TTTS was higher in group A than in group B or C [12/16 vs 43% (19/44) and 5/15; Bonferroni correction, P<0.017]. There was no significant difference in the incidence of premature rupture of membrane, spontaneous abortion, fetal demise, premature delivery and gestational age at delivery between Group A, B and C (all P>0.05). (2) Compared with the isolated sIUGR group, the sIUGR with TTTS group showed less ΔEFW [(29.6±11.4)% vs (40.1±11.8)%, t=3.88, P<0.001], higher incidence of premature rupture of membrane [47% (17/36) vs 21% (8/39), χ2=6.01, P=0.014], lower rate of live births [69% (25/36) vs 95%(37/39), χ2=8.45, P=0.004] and earlier delivery [34.1 weeks (26.7-40.7 weeks) vs 38.0 weeks (29.3-40.0 weeks), Z=311.50, P=0.018]. (3) There was no significant difference in the incidence of premature rupture of membrane, live birth rate or 30-day survival rate among the sIUGR type Ⅰ, Ⅱ and Ⅲ groups (all P>0.05). (4) sIUGR complicated by TTTS was a risk factor for adverse pregnancy outcomes of the co-twin after the procedure ( OR=3.94, 95% CI: 1.40-11.10, P=0.010). (5) Thirteen co-twins presented with cardiac enlargement, myocardial hypertrophy or/and tricuspid regurgitation in routine ultrasound scans before the procedure and nine of them had TTTS. Among them, eight live births were followed up for one month to 4.5 years of age and no abnormality in cardiac function was reported. (6) There were overall 62 live births. Apart from two cases of neonatal death and four lost to follow-up, the other 56 cases were followed up to one month to 5 years of age and two premature infants showed gross motor retardation. Conclusions:The gestational age at RFA has no significant impact on pregnancy outcomes, while sIUGR complicated by TTTS may increase the risk of adverse outcomes after the procedure. After RFA, the overall survival rate of the co-twin in pregnancies with sIUGR is high and no severe neurodevelopmental abnormalities has been found during a short-term follow-up.

Hidatidosis esplénica gigante primaria en una gestante: reporte de caso / Primary giant splenic hydatid disease in a pregnant woman: case report

La hidatidosis es considerada en la actualidad como un problema de salud pública en el Perú. Es una infección parasitaria trasmitida por la ingesta de huevos de Echinococcus granulosus y los órganos más comprometidos son el hígado y los pulmones, siendo rara la afectación del bazo. Presentamos el caso de una gestante joven con dolor abdominal y sensación de masa en hipocondrio izquierdo. El estudio ecográfico reveló imagen quística multitabicada en hemiabdomen izquierdo, con feto viable. Se le realizó cesárea, seguido de laparotomía exploratoria y se halló una tumoración gigante de bazo que, según el estudio anatomopatológico corresponde a una hidatidosis esplénica multiquística. Asimismo, como complicación fetal ocurrió restricción del crecimiento intrauterino. La paciente evolucionó favorablemente sin recurrencia de focos hidatídicos, mientras que el neonato mostró un patrón de crecimiento adecuado.

Hydatidosis is currently considered a public health problem in Peru. It is a parasitic infection transmitted by the ingestion of eggs of Echinococcus granulosus. The most involved organs are the liver and lungs, with spleen involvement being rare. We present the case of a young pregnant woman with abdominal pain and a sensation of mass in the left hypochondrium. The ultrasound study revealed a multiloculated cystic image in the left hemiabdomen, and a viable fetus. She underwent cesarean section, followed by exploratory laparotomy, which revealed a giant spleen tumor that, according to the anatomopathological study, corresponded to multicystic splenic hydatid disease. Likewise, intrauterine growth restriction was found as a fetal complication. The patient progressed favorably without recurrence of hydatid foci and the neonate had an adequate growth pattern.

Supresión de la visita de tercer trimestre en embarazo de bajo riesgo en la pandemia de SARS-CoV-2 / Third trimester suppression in low-risk pregnancy in the SARS-CoV-2 pandemic

Resumen Objetivo: La pandemia de SARS-CoV-2 ha obligado a una reorganización de las visitas presenciales, y por ese motivo se han minimizado hasta el punto de reconsiderar la realización de la visita del tercer trimestre. Nuestro centro suprimió dicha visita obstétrica y obtuvo datos propios para comparar los resultados perinatales logrados con dicho manejo. Método: Se realizó un estudio de cohortes retrospectivo, en marzo de 2020, con una cohorte con visita presencial única en la semana 40 de gestación (122 gestantes) frente a una cohorte con seguimiento convencional con visita presencial en la semana 36 de gestación (162 gestantes). Se evaluaron la restricción del crecimiento fetal, la edad gestacional al nacimiento, el peso neonatal y las tasas de inducciones, partos eutócicos y cesáreas urgentes en trabajo de parto. Resultados: Se encontraron diferencias leves en la tasa de nuliparidad (p < 0,04), sin hallarlas en el resto de las variables maternas. No hubo diferencias entre las dos cohortes en los resultados neonatales. Conclusiones: No hay diferencias entre los resultados materno-fetales obtenidos en gestantes con seguimiento gestacional con restricción de la visita del tercer trimestre respecto del seguimiento tradicional, excepto en el diagnóstico de las alteraciones de la estática fetal al término de la gestación.

Abstract Objective: The SARS-CoV-2 pandemic has forced a reorganization of face-to-face visits, for this reason they have been minimized to the point of reconsidering the completion of the third trimester visit. Our center eliminated the performance of this obstetric visit and obtained its own data to compare the perinatal results obtained with such management. Method: A retrospective cohort study was carried out in March 2020, with a cohort with a single face-to-face visit at 40th week of gestation (122 pregnant women), versus a cohort with conventional follow-up with face-to-face visit at 36th week of gestation (162 pregnant women). The following were evaluated fetal growth restriction, gestational age at birth, neonatal weight, rate of inductions, of eutocic deliveries, and of urgent cesarean sections in labor. Results: Slight differences were found in the nulliparity rate (p < 0.04), without finding them in the rest of the maternal variables. There were no differences between the two cohorts in neonatal outcomes. Conclusions: There were no differences between the maternal-fetal results obtained in pregnant women with gestational follow-up with restriction of the third trimester visit compared to traditional follow-up, except in the diagnosis of alterations in fetal statics at the end of pregnancy.

La salud gestacional y su relación con la restricción del crecimiento intrauterino / Gestational health and its relationship with intrauterine growth restriction

RESUMEN Introducción: La frecuencia de infantes que durante el desarrollo intrauterino experimentan restricción del crecimiento es alta y su mayor incidencia está en los países en desarrollo, entre los que Latinoamérica y el Caribe alcanzan prevalencia del 10 %. Objetivo: Identificar la relación que existe entre la anemia, las alteraciones de la tensión arterial y la disglicemia, con la restricción del crecimiento fetal. Métodos: Se realizó estudio longitudinal descriptivo y retrospectivo de gestantes captadas en dos áreas de salud del municipio Santa Clara, que terminaron su embarazo entre septiembre del 2013 y octubre del 2018. Los recién nacidos presentaron restricción del crecimiento intrauterino. La muestra se clasificó en: pequeños y adecuados, según condición trófica al nacimiento. En cada grupo se estudió la relación de estas afecciones en los que se sospechó un vínculo con el fenómeno de restricción. Resultados: Los niños que presentaron restricción del crecimiento fetal se clasificaron, según su condición trófica, en adecuados; no se apreciaron relaciones significativas entre la anemia, la diabetes gestacional y la hipertensión arterial con la presencia de restricción del crecimiento intrauterino. Conclusiones: esta afección no estuvo relacionada con la salud de las gestantes portadoras en dos áreas de salud del municipio Santa Clara.

ABSTRACT Introduction: the frequency of infants experiencing growth restriction during intrauterine development is high and its highest incidence is in developing countries, among which Latin America and the Caribbean reach a prevalence of 10%. Objective: to identify the relationship among anemia, blood pressure changes and dysglycemia, with fetal growth restriction. Methods: we conducted a descriptive, retrospective and longitudinal study of pregnant women recruited in two health areas from Santa Clara municipality, who ended their pregnancy between September 2013 and October 2018 and in whom the newborns had intrauterine growth restriction. The sample was classified as small and adequate, according to their trophic condition at birth. The relation of these conditions in which a link with the restriction phenomenon was suspected was studied in each group. Results: children who had fetal growth restriction were classified, according to their trophic condition, as adequate; no significant relationships were found among anemia, gestational diabetes and arterial hypertension with the presence of intrauterine growth restriction. Conclusions: this condition was not related to the health of the pregnant women belonging to these two health areas from Santa Clara municipality.

Sildenafil como tratamiento de la restricción de crecimiento intrauterino, revisión sistemática de la literatura / Sildenafil as a treatment for blood restriction fetal growth, systematic review of the literature

INTRODUCCIÓN Y OBJETIVO: La restricción del crecimiento intrauterino (RCIU), expresión insuficiente del potencial genético de crecimiento fetal, complica el 5-8% de los embarazos, con unas altas tasas de morbimortalidad perinatal. De origen multifactorial, puede ser causada por patologías maternas, fetales o placentarias. El tratamiento es limitado, optándose por un seguimiento riguroso con eventual interrupción del embarazo según la evolución. Se han utilizado diferentes estrategias terapéuticas para su prevención y manejo, surgiendo el citrato de sildenafil (CS), inhibidor de la fosfodiesterasa tipo 5, como fármaco que podría mejorar el flujo sanguíneo uteroplacentario y ofrecer mejores resultados perinatales en fetos con RCIU. Se propone realizar una revisión de la literatura disponible en relación al CS como tratamiento del RCIU. MÉTODO: Se realizó una búsqueda de literatura en inglés y español. De 105 artículos seleccionados, se excluyeron 94. La información obtenida fue clasificada y utilizada como soporte para la realización de esta revisión, siguiendo el modelo PRISMA. RESULTADOS: Se encontraron 11 estudios que contrastan el uso de placebo y CS en pacientes con RCIU. Respecto al aumento de peso al nacimiento, solo dos estudios demostraron evidencia significativa. Se reportaron 40 casos de muerte fetal/neonatal asociada al tratamiento con CS. CONCLUSIONES: No se encontró evidencia suficiente que justifique el uso sistemático de CS en casos de RCIU. Aún es necesario realizar estudios con muestras de mayor tamaño y posterior metaanálisis para confirmar el beneficio farmacológico en cuanto al aumento de peso de nacimiento, la prolongación del embarazo y los posibles efectos adversos a largo plazo.

INTRODUCTION AND OBJECTIVE: Intrauterine growth restriction (IUGR) is an insufficient expression of the genetic potential for fetal growth, complicates 5-8% of pregnancies and represents high rates of perinatal morbidity and mortality. Of multifactorial origin, it can be caused by pathologies at the maternal, fetal or placental level. The treatment is limited, opting for a rigorous follow-up with eventual interruption of the pregnancy according to evolution. Different therapeutic strategies have been used for its prevention and management, emerging sildenafil citrate (CS), inhibitor of phosphodiesterase type 5, as a drug that could improve the uteroplacental blood flow and offer better perinatal results in fetuses with IUGR. A review of the available literature on CS as a treatment for IUGR is proposed. METHOD: A search was conducted for literature in English and Spanish. Out of 105 selected articles, 94 were excluded. The information obtained was classified and used as support for this review, following the PRISMA model. RESULTS: We found 11 studies that contrast the use of placebo and CS in patients with IGR. Regarding birth weight gain, only two studies showed significant evidence. Forty cases of fetal/neonatal death associated with CS treatment were reported. CONCLUSIONS: Not enough evidence was found to justify the routine use of CS in IUGR cases. Studies with larger samples and subsequent meta-analysis are still necessary to confirm the benefit of this drug in terms of birth weight gain, prolongation of pregnancy and possible long-term adverse effects.

Prediction and treatment of brain injury in growth-restricted fetus / 中华围产医学杂志

The assessment and treatment of neurodevelopment abnormalities in fetuses with growth restriction have become a focus and challenge in recent years. We review the recent advances in this field, including the imaging assessment (diffusion-weighted imaging, diffusion tensor imaging, and phase-control MRI), predictive value of biomarkers (S100B, glial fibrillary acidic protein, and myelin basic protein), and the treatment of brain injury (antioxidant therapy, oxytocin receptor agonists, and melatonin) in these fetuses, aiming to provide a reference for intrauterine monitoring and treatment.

Exploration on appropriate fetal weight of twin pregnancies at different gestational weeks and pregnancy complications and outcomes / 中华妇产科杂志

Objective:To explore the appropriate fetal weight of twin pregnancies at different gestational weeks and the association with pregnancy complications and outcomes.Methods:Fetal weight at different gestational weeks and related pregnancy complications and outcomes from 1 225 twin pregnancies, who gave birth at Peking University First Hospital from January 2004 to December 2020, were analyzed in this study, including hypertensive disorders in pregnancy, gestational diabetes mellitus (GDM), fetal growth restriction (FGR), fetal distress, preterm birth and neonatal asphyxia. The appropriate fetal weight of twin pregnancies at different gestational weeks were analysed based on the information from 616 twin pregnancies without complications (except preterm birth), and were expressed as P10~ P90. The chi-square test was used to compare the risk of pregnancy complications and adverse outcomes in large for gestational age (LGA), appropriate for gestational age (AGA) and small for gestational age (SGA) twin pregnancies and the difference in incidence of pregnancy complications and adverse outcomes in different years. Results:The appropriate fetal weights of normal twin pregnancies at 28 to 37 weeks and 38-40 weeks of gestation were 910-1 255 g, 996-1 518 g, 1 105-1 785 g, 1 295-1 825 g, 1 336-2 000 g, 1 754-2 321 g, 1 842-2 591 g, 1 913-2 615 g, 2 150-2 847 g, 2 350-3 130 g and 2 450-3 250 g, respectively. The incidences of hypertensive disorders in pregnancy, FGR, fetal distress and neonatal asphyxia related to SGA twin pregnancies were significantly higher than AGA twin pregnancies (all P<0.05). The incidence of GDM in twin pregnant from 2017 to 2020 was higher than that from 2004 to 2009 or from 2010 to 2016, but the incidence of fetal distress and neonatal asphyxia were lower than those from 2010 to 2016, and the differences were statistically significant (all P<0.05). Conclusions:The appropriate weights of twin fetuses at different gestational weeks are different from singleton. The incidence of pregnancy complications and adverse outcomes in AGA fetuses is significantly lower than that in SGA fetuses under the specific weight standard for twin fetuses, which could provide a practical basis for clinical management of twin pregnancy.

Tratamiento farmacológico en la restricción del crecimiento fetal: revisión de la bibliografía / Pharmacological management for fetal growth restriction: literature review

Resumen OBJETIVO: Explorar las diferentes estrategias de tratamiento farmacológico de la restricción del crecimiento fetal propuestas a lo largo del tiempo. METODOLOGÍA: Revisión cuasi-sistemática de la evidencia científica histórica disponible acerca del tratamiento médico descrito para la atención de mujeres embarazadas con restricción del crecimiento fetal. RESULTADOS: Entre los tratamientos médicos descritos para tratar la restricción del crecimiento fetal, los donadores de óxido nítrico, las estatinas y la aspirina asociada con omega 3, han tenido desenlaces no consistentes en estudios con limitado tamaño de muestra. Por lo que se refiere a los inhibidores de la 5-fosfodiesterasa, el sildenafilo no se ha asociado con un aumento de la velocidad de crecimiento fetal pero sí con alarmas respecto de su seguridad debidas al incremento de los casos de hipertensión pulmonar fetal y mortalidad perinatal. Por su parte, el tadalafilo ha mostrado desenlaces iniciales favorables y se esperan estudios con mayor tamaño de muestra que permitan emitir recomendaciones claras con respecto a su indicación. También se esperan los desenlaces de estudios clínicos en curso, para definir la indicación de la heparina de bajo peso molecular en este escenario en virtud de sus prometedores resultados iniciales. Los procedimientos más invasivos, como la inyección de factor de crecimiento endotelial vascular y la plasmaféresis, permanecen en estudio como propuestas terapéuticas por los resultados de estudios preclínicos y clínicos con pocos pacientes. CONCLUSIÓN: Por ahora, ninguna estrategia farmacológica propuesta ha conseguido generar recomendaciones fuertes para su indicación; sin embargo, se esperan nuevos estudios con alta calidad metodológica que generen evidencia científica lo suficientemente contundente para recomendar su indicación.

Abstract OBJECTIVE: To explore the different pharmacological treatment strategies for fetal growth restriction proposed over time. METHODOLOGY: Quasi-systematic review of the available historical scientific evidence on the medical treatment described for the care of pregnant women with fetal growth restriction. RESULTS: Among the medical treatments described to treat fetal growth restriction, nitric oxide donors, statins, and aspirin associated with omega-3 have had inconsistent outcomes in studies with limited sample size. As for 5-phosphodiesterase inhibitors, sildenafil has not been associated with an increase in fetal growth velocity, but there have been alarms regarding its safety due to the increase in cases of fetal pulmonary hypertension and perinatal mortality. On the other hand, tadalafil has shown favorable initial outcomes and studies with a larger sample size are awaited to issue clear recommendations regarding its indication. The results of ongoing clinical studies are also awaited to define the indication of low molecular weight heparin in this setting, given its promising initial results. More invasive procedures, such as vascular endothelial growth factor injection and plasmapheresis, remain under study as therapeutic proposals due to the results of preclinical and clinical studies with few patients. CONCLUSION: For now, no proposed pharmacological strategy has managed to generate strong recommendations for its indication; however, new studies with high methodological quality are expected to generate scientific evidence strong enough to recommend its indication.

Neonatal and long-term outcomes of selective fetal growth restricted fetuses / 中华围产医学杂志

Objective:To investigate the short- and long-term outcomes of fetuses with selective fetal growth restriction (sFGR).Methods:A retrospective study was conducted on monochorionic diamniotic (MCDA) twins with sFGR admitted to the Neonatal Intensive Care Unit of Peking University Third Hospital from September 2017 to December 2019. MCDA neonates delivered during the same period without significant complications were selected as the control group. MCDA twins with sFGR were divided into type Ⅰ, Ⅱ, and Ⅲ groups and then further divided into the larger and the smaller fetus subgroups according to the birth weight. These children were followed up by telephone at 2-3 years old. Height-for-age and weight-for-age Z-scores were calculated. Ages and Stages Questionnaire-Third Edition (ASQ-3) was used to determine comprehensive development. Independent sample t-test, one-way analysis of variance, non-parameter test, and Chi-square test (or rank-sum test) were used for statistical analysis. Results:(1) A total of 116 pregnant women with sFGR (232 neonates) were enrolled in this study. There were 43, 40, and 33 mothers and 86, 80, and 66 newborns in type Ⅰ, Ⅱ, and Ⅲ groups, respectively. The control group included 31 pregnant women and 62 neonates. The gestational age at onset of sFGR was younger in the type Ⅱ and Ⅲ groups than in type Ⅰ group [(23.8±4.8) and (24.1±3.1) vs (27.0±6.1) weeks, F=5.19, P<0.05; all P<0.017 during pairwise comparisons]. (2) The incidence of sepsis and treatment abandonment/death in neonates in type Ⅱ and Ⅲ groups were higher than those in type Ⅰ and control groups [neonatal sepsis: 11.3% (9/80) and 6.1% (4/66) vs 2.3% (2/86) and 0.0% (0/62), χ2=6.30, P=0.001; death or treatment abandonment rate:13.8% (11/80) and 10.6% (7/66) vs 3.5% (3/86) and 0.0% (0/62), χ2=4.68, P=0.003; all P<0.017 during pairwise comparisons]. In cases with type Ⅱ or type Ⅲ sFGR, the risk of digestive system diseases was significantly higher in the smaller fetus group than in the larger fetus group [type Ⅱ: 46.2% (37/80) vs 38.7% (31/80), χ2=16.72; type Ⅲ: 47.0% (31/66) vs 34.8% (23/66), χ2=39.69; both P<0.001], while the rate of respiratory system diseases was lower in the smaller fetus group [type Ⅱ: 35.0% (28/80) vs 45.0% (36/80), χ2=36.85; type Ⅲ: 37.9% (25/66) vs 45.4% (30/66), χ2=12.55; both P<0.001]. The incidence of neonatal sepsis in smaller fetuses was higher than that in larger ones in type Ⅱ sFGR [7.5% (6/80) vs 3.7% (3/80), χ2=4.68, P=0.034]. The incidence of neurological complications in larger fetuses was higher than that in smaller ones in type Ⅲ sFGR [15.1% (10/66) vs 4.5% (3/66), χ2=5.72, P<0.001]. (3) In type Ⅱ group, seven neonates died (one case of cerebral hemorrhage, two cases of gastrointestinal perforation, two cases of septic shock, and two cases of necrotizing enterocolitis), and four cases withdrew the treatment. In type Ⅲ group, four neonates died (two cases of necrotizing enterocolitis, one case of gastrointestinal perforation, and one case of cerebral hemorrhage), and three cases withdrew from the treatment. (4) Totally, 71 children in type Ⅰ, 61 in type Ⅱ, and 58 in type Ⅲ group were followed up at the age of 2-3. Children with type Ⅱ or type Ⅲ sFGR lagged behind those in type Ⅰ group and control group in physical growth [ M ( P25- P75), Z-scores:－0.46 (－0.87-0.42),－0.35 (－0.62-0.71), 0.05 (－0.61-0.51), and 0.14 (－0.57-0.75); H=6.20, P=0.001]. In type Ⅱ and Ⅲ groups, the smaller fetuses lagged the larger fetuses in physical growth at 2-3 years of age. ASQ-3 scores in communication, gross motor, fine motor, problem-solving and personal-social areas were all lower in type Ⅱ and Ⅲ groups than in type Ⅰ and control groups. ASQ-3 scores in the five dimensions of the smaller fetuses in the type Ⅱ group were lower than those of the larger fetuses. In the type Ⅲ group, the smaller fetuses had lower ASQ-3 scores in communication and gross motor than the larger ones [communication ability: (42.6±18.8) vs (56.4±9.4) scores, t=19.63, P<0.001; gross motor: (45.5±19.7) vs (54.5±9.7) scores, t=12.64, P=0.003]. Conclusion:The neonatal morbidity is significantly increased in type Ⅱ and Ⅲ sFGR, and babies lagged others in height, weight, and ASQ-3 score at 2-3, which is worthy of early attention.

Utilidad de la evaluación USG Doppler de las arterias uterinas entre las semanas 11 y 13+6 y su aplicación en las calculadoras de riesgo para predecir preeclampsia / Usefulness of the USG Doppler evaluation of the uterine arteries between weeks 11 and 13+6 and its application in risk calculators to predict preeclampsia / Utilidade da avaliação USG Doppler das artérias uterinas entre as semanas 11 e 13+6 e sua aplicação em calculadoras de risco para prever pré-eclâmpsia

Introducción. La preeclampsia es la primera causa de muerte materna directa en Colombia y la segunda a nivel mundial. El desarrollo de estrategias de predicción y prevención puede disminuir las complicaciones y secuelas ocasionadas por dicha enfermedad. El Doppler de arterias uterinas entre las semanas 11 y 13+6 como prueba independiente o en combinación con factores maternos o pruebas bioquímicas permite tasas de detección de preeclampsia temprana ≥ 90% a partir de la implementación de distintos cribados. La validez de dicha prueba diagnóstica presenta una sensibilidad del 47.8% y especificidad del 92.1% para la detección de preeclampsia temprana; con una sensibilidad del 26.4% y especificidad del 93.4% para predecir preeclampsia en cualquier etapa. División de los temas tratados. En esta revisión de tema se aborda la utilidad de esta medición, se habla de la realización de la técnica en cuestión y, por último, se revisan las herramientas estandarizadas que están disponibles en la actualidad junto con su accesibilidad y precisión. Conclusiones. La evidencia empírica que respalda la validez de las herramientas disponibles hoy en día para el tamizaje de preeclampsia a través de la evaluación por ultrasonografía Doppler de las arterias uterinas es significativa. Al ser Colombia un país que presenta una prevalencia alta de preeclampsia, conocer la utilidad de esta medición favorece una vigilancia temprana y oportuna, lo que disminuye los posibles desenlaces desfavorables para las maternas.

Introduction. Preeclampsia is the primary cause of direct maternal death in Colombia and the second globally. The development of prediction and prevention strategies can reduce complications and consequences caused by this disease. The uterine arteries Doppler between weeks 11 and 13+6 as an independent test or in combination with maternal factors or biochemical tests allows for early detection rates for preeclampsia of ≥90% from the implementation of different sieving. The validity of this diagnostic test has a sensitivity of 47.8% and specificity of 92.1% for the early detection of preeclampsia; with a sensitivity of 26.4% and specificity of 93.4% to predict preeclampsia at any stage. Division of Covered Topics. This topic review covers the usefulness of this measurement. It discusses the performance of the technique in question and, lastly, the standardized tools currently available are reviewed together with the accessibility and accuracy. Conclusions. The empirical evidence that supports the validity of the tools available today for the screening of preeclampsia via Doppler ultrasound evaluation of the uterine arteries is significant. As Colombia is a country with a high prevalence of preeclampsia, knowing the usefulness of this measurement favors early and timely surveillance, which reduces possible unfavorable outcomes for mothers.

Introdução. A pré-eclâmpsia é a principal causa de morte materna direta na Colômbia e a segunda no mundo. O desenvolvimento de estratégias de predição e prevenção pode reduzir as complicações e sequelas causadas pela doença. O Doppler da artéria uterina entre as semanas 11 e 13+6 como um teste independente ou em combinação com fatores maternos ou testes bioquímicos permite taxas de detecção de pré-eclâmpsia precoce≥90% a partir da implementação de diferentes exames. A validade desse teste diagnóstico tem sensibilidade de 47,8% e especificidade de 92,1% para a detecção de pré-eclâmpsia precoce; com uma sensibilidade de 26,4% e especificidade de 93,4% para prever pré-eclâmpsia em qualquer fase. Divisão dos tópicos abordados. Esta revisão de tópicos aborda a utilidade desta medição, discute a realização da técnica em questão e, por fim, são revisadas as ferramentas padronizadas que estão disponíveis atualmente, juntamente com sua acessibilidade e precisão. Conclusões. A evidência empírica que apoia a validade das ferramentas disponíveis atualmente para rastreamento de pré-eclâmpsia por meio da avaliação de ultrassom Doppler das artérias uterinas é significativa. Como a Colômbia é um país com alta prevalência de pré-eclâmpsia, conhecer a utilidade dessa medição favorece a vigilância precoce e oportuna, o que reduz possíveis resultados desfavoráveis para mulheres maternas.

Malformaciones esqueléticas y alteraciones del crecimiento en fetos de ratas con diabetes moderada / Skeletal malformations and growth disturbances in fetuses of mild diabetic rats

Resumen Introducción. En la actualidad, la diabetes mellitus representa una de las condiciones médicas que complica el embarazo con mayor frecuencia, lo que afecta el crecimiento y el desarrollo fetal. Objetivo. Determinar las malformaciones esqueléticas y alteraciones en el crecimiento en fetos de ratas Wistar diabéticas. Materiales y métodos. Se utilizó un modelo de diabetes moderada inducida neonatalmente con estreptozotocina (STZ 100 mg/kg de peso corporal, por vía subcutánea) en ratas Wistar. En la adultez, las ratas sanas y diabéticas se aparearon con machos sanos de la misma edad y cepa. El día 20 de gestación se practicó la cesárea bajo anestesia. Se extrajeron los fetos, se pesaron y clasificaron como pequeños (PAG), adecuados (AEG) o grandes (GEG) para la edad gestacional. Los fetos seleccionados se procesaron para el análisis de anomalías esqueléticas y sitios de osificación. Resultados. En la descendencia de las ratas diabéticas, hubo un mayor porcentaje de fetos clasificados como pequeños o grandes y un menor porcentaje de fetos con peso adecuado; el promedio de peso fetal fue menor y había menos sitios de osificación. Se observaron alteraciones en la osificación de cráneo, esternón, columna vertebral, costillas y extremidades anteriores y posteriores; y también, hubo una correlación directa entre el peso y el grado de osificación fetal. Hubo malformaciones congénitas asociadas con la fusión y bifurcación de las costillas, así como cambios indicativos de hidrocefalia, como la forma de domo del cráneo, una amplia distancia entre los parietales y la anchura de las fontanelas anterior y posterior. Conclusión. La diabetes moderada durante la gestación altera el crecimiento y el desarrollo fetal, que se ve afectado tanto por macrosomía y la restricción del crecimiento intrauterino como por malformaciones esqueléticas.

Abstract Introduction: Currently, diabetes mellitus represents one of the medical conditions that more frequently complicates pregnancy affecting the fetus's growth and development. Objective: To determine the skeletal malformations and growth alterations in fetuses of diabetic Wistar rats. Materials and methods: We used a neonatally streptozotocin-induced mild diabetes model (STZ 100 mg/kg body weight - subcutaneously) in Wistar rats. In adulthood, healthy and diabetic rats were mated with healthy males of the same age and strain. On day 20 of gestation, a cesarean was performed under anesthesia. Fetuses were removed, weighed, and classified as small (SPA), adequate (APA), and large (LPA) for the gestational age. Selected fetuses were processed for skeletal anomaly and ossification sites analysis. Results: In the offspring of diabetic rats, there was a higher percentage of fetuses classified as small or large and a lower percentage of fetuses with adequate weight; the fetal weight mean was lower and there were fewer sites of ossification. Alterations were observed in the ossification of the skull, sternum, spine, ribs and fore and hind limbs; and also, there was a direct correlation between fetal weight and ossification degree There were congenital malformations associated with fusion and bifurcation of the ribs, as well as changes indicative of hydrocephaly, such as the dome shape of the skull, a wide distance between parietals, and the width of the anterior and posterior fontanels. Conclusion: Moderate diabetes during pregnancy alters fetal growth and development with macrosomia and intrauterine growth restriction, as well as skeletal malformations.