RESUMEN

SUMMARY OBJECTIVE: The aim of the study was to compare two labor induction regimens (4 and 6 h), to determine predictors of successful labor induction with intravaginal misoprostol 25 μg tablets, and to evaluate the association with adverse perinatal outcomes. METHODS: This was a retrospective cohort study that included singleton pregnancies undergoing induction of labor with an intravaginal misoprostol 25 μg tablet between 37 and 42 weeks of gestation. The pregnant women were divided into two groups: Group 1—intravaginal misoprostol 25 μg every 4 h and Group 2—intravaginal misoprostol 25 μg every 6 h. RESULTS: Pregnant women were divided into Group 1 (n=289) and Group 2 (n=278). Group 1 had a higher median number of intravaginal misoprostol 25 μg tablets (3.0 vs. 2.0 tablets, p<0.001), a lower prevalence of postpartum hemorrhage (7.6 vs. 32.7%, p<0.001), and a higher need for oxytocin (odds ratio [OR]: 2.1, 95%CI: 1.47-2.98, p<0.001) than Group 2. Models including intravaginal misoprostol 25 μg tablets every 4 and 6 h [x2(1)=23.7, OR: 4.35, p<0.0001], parity [x2(3)=39.4, OR: 0.59, p=0.031], and Bishop's score [x2(4)=10.8, OR: 0.77, p=0.019] were the best predictors of failure of labor induction. A statistically significant difference between groups was observed between the use of the first intravaginal misoprostol 25 μg tablet at the beginning (Breslow p<0.001) and the end of the active labor phase (Long Hank p=0.002). CONCLUSION: Pregnant women who used intravaginal misoprostol 25 μg every 4 h had a longer time from the labor induction to the beginning of the active phase of labor and higher rates of adverse perinatal outcomes than women who used intravaginal misoprostol 25 μg every 6 h.

RESUMEN

SUMMARY OBJECTIVE: The aim of this study was to evaluate the success rate and predictors of labor induction using vaginal misoprostol in a low-risk pregnant women population. METHODS: A prospective cohort study was carried out with 196 pregnant women. Groups 2 and 4 of the Robson Classification admitted for induction of labor with vaginal misoprostol (25 μg tablets every 6 h, up to 4 tablets, for a maximum of 24 h). The success of labor induction was considered the achievement of vaginal delivery. Binary logistic regression was used to determine the best predictors of successful induction of labor with vaginal misoprostol. RESULTS: Of all the pregnant women analyzed, 140 (71.4%) were successful and 56 (28.6%) were unsuccessful. Pregnant women who achieved successful induction had a higher number of pregnancies (1.69 vs. 1.36, p=0.023), a higher number of deliveries (0.57 vs. 0.19, p<0.001), a higher Bishop score (2.0 vs. 1.38, p=0.002), and lower misoprostol 25 μg tablets (2.18 vs. 2.57, p=0.031). No previous deliveries [x2(1)=3.14, odds ratio (OR): 0.24, 95% confidence interval (CI): 0.10-0.57, R2 Nagelkerke: 0.91, p=0.001] and the presence of one previous delivery [x2(1)=6.0, OR: 3.40, 95% CI: 1.13-10.16, R2 Nagelkerke: 0.043, p=0.029] were significant predictors of successful induction of labor with vaginal misoprostol. CONCLUSION: A high rate of labor induction success using vaginal misoprostol in a low-risk population was observed, mainly in multiparous and with gestational age>41 weeks. No previous delivery decreased the success of labor induction, while one previous delivery increased the success of labor induction.

RESUMEN

Abstract Objectives: to evaluate the success rate of labor induction and determinants of successful outcome. Methods: retrospective cohort study of parturients that undergone labor induction between 2006 and 2015. Data was retrieved from the medical records and multivariate logistic regression was used to evaluate the determinants of successful labor induction. Results: the rate of labor induction was 10.9%. Out of the 940 women analysed, six hundred and fifty-six women (69.8%) had successful vaginal delivery. Labor induction at 39-40 weeks (OR=2.70; CI95%=1.17-6.36), 41 weeks (OR=2.44; CI95%=1.14-5.28), estimated fetal weight between 2.5 and 3.4kg (OR=4.27, CI95%=1.96-5.59) and estimated fetal weight of 3.5-3.9kg (OR=5.45; CI95%=2.81-10.60) increased the odds of achieving vaginal delivery. Conclusions: our findings suggest that 39, 40 and 41 weeks are optimal gestational ages for labor induction with respect to successful vaginal delivery. Also, estimated fetal weight between 2.5kg and 3.9kg favours successful vaginal delivery.

Resumo Objetivos: avaliar a taxa de sucesso da indução do trabalho de parto e determinantes de um resultado bem sucedido. Métodos: estudo de coorte retrospectivo de parturientes que submeteram a indução de trabalho de parto entre 2006 e 2015. Os dados foram recuperados dos registros médicos e a regressão logística multivariada foi utilizada para avaliar os determinantes da indução de trabalho de parto bem sucedida. Resultados: a taxa de indução de trabalho de parto foi de 10,9%. Das 940 mulheres analisadas, seiscentas e cinquenta e seis mulheres (69,8%) tiveram um parto vaginal bem sucedido. A indução de trabalho de parto nas 39-40 semanas (OR=2,70; IC95%=1,17-6,36), 41 semanas (OR=2,44; IC95%=1,14-5,28), peso fetal estimado entre 2,5 e 3,4kg OR=4,27; IC95%=1,96-5,59) e peso fetal estimado entre 3,5-3,9kg (OR=5,45; IC95%=2,81-10,60) aumentou as probabilidades de conseguir um parto vaginal. Conclusões: as nossas conclusões sugerem que as 39, 40 e 41 semanas são idades gestacionais ideais para a indução do trabalho de parto no que diz respeito ao sucesso do parto vaginal. Além disso, o peso fetal estimado entre 2,5kg e 3,9kg favorece o parto vaginal bem sucedido.

Asunto(s)

RESUMEN

Resumen OBJETIVO: Comparar la eficacia del misoprostol intravaginal con el dispositivo vaginal de liberación prolongada de dinoprostona en la inducción del parto. Además, analizar el perfil de seguridad en relación con los desenlaces maternos y perinatales. MATERIALES Y MÉTODOS: Estudio retrospectivo y comparativo efectuado en pacientes atendidas entre 2018 y 2020 en el Área Sanitaria de Ferrol, La Coruña, España, con partos que se iniciaron con inducción con prostaglandinas. Las pacientes se dividieron en dos cohortes, en función de la prostaglandina sintética administrada (misoprostol por vía vaginal o dinoprostona en dispositivo intravaginal). Para la comparación entre ambos grupos se aplicó la prueba U de Mann-Whitney. Para las variables cualitativas se describió su cantidad total y el porcentaje, que se compararon con prueba de χ2 de Pearson. RESULTADOS: Se analizaron 508 pacientes con inducción del parto. En las indicaciones de ésta no se encontraron diferencias entre uno y otro grupo, aunque destacó la indicación del misoprostol en pacientes con embarazo cronológicamente prolongado (63%) y de dinoprostona en rotura prematura de membranas (49%). En relación con los desenlaces perinatales, se registró un Apgar menor de 7 a los 5 minutos en 2 pacientes tratadas con dinoprostona y 1 con misoprostol; así como un pH arterial umbilical menor de 7.10 en 8 pacientes tratadas con dinoprostona y 7 con misoprostol. CONCLUSIONES: Los datos aquí reportados hacen suponer que ambas prostaglandinas consiguen una tasa de inicio del parto similar, aunque la dinoprostona parece reducir el tiempo hasta el inicio del parto en mujeres con indicación de inducción.

Abstract OBJECTIVE: To compare the efficacy of intravaginal misoprostol with the dinoprostone extended-release vaginal device in labor induction. In addition, to analyze the safety profile in relation to maternal and perinatal outcomes. MATERIALS AND METHODS: Retrospective and comparative study performed in patients attended between 2018 and 2020 in the Health Area of Ferrol, La Coruña, Spain, with deliveries that were initiated with prostaglandin induction. The patients were divided into two cohorts, depending on the synthetic prostaglandin administered (misoprostol vaginally or dinoprostone in intravaginal device). The Mann-Whitney U test was used to compare the two groups. For qualitative variables, the total number and percentage were described and compared with Pearson's 2 test. RESULTS: A total of 508 patients undergoing labor induction were analyzed. No differences were found in the indications for induction of labor between one group and the other, although the indication for misoprostol in patients with chronologically prolonged pregnancy (63%) and for dinoprostone in premature rupture of membranes (49%) stood out. In relation to perinatal outcomes, an Apgar of less than 7 at 5 minutes was recorded in 2 patients treated with dinoprostone and 1 with misoprostol; as well as an umbilical arterial pH of less than 7.10 in 8 patients treated with dinoprostone and 7 with misoprostol. CONCLUSIONS: The data reported here suggest that both prostaglandins achieve a similar rate of onset of labor, although dinoprostone appears to reduce the time to onset of labor in women indicated for induction.

RESUMEN

INTRODUCCIÖN Y OBJETIVOS: Describir la experiencia de los partos en gestantes con diagnóstico confirmado de COVID 19 mediante RT-PCR asintomáticas o con sintomatología leve y aquellas sin la enfermedad, y determinar la tasa de éxito de parto vaginal en inducción de trabajo de parto. MÉTODOS: Análisis retrospectivo de pacientes que tuvieron su parto entre 15 de Abril y 03 de Julio del 2020 en el Hospital San Juan de Dios. Se incluyeron las pacientes inducidas con Dinoprostona, Oxitocina o ambas de manera secuencial y se dividieron según estatus COVID 19 mediante RT-PCR al ingreso. Se caracterizó demográficamente el grupo de pacientes positivas y se determinaron los datos de ambos grupos en relación a la necesidad de inducción de trabajo de parto y su éxito para parto vaginal. RESULTADOS: De un total de 657 nacimientos, hubo un 9.7% (n=64) de pacientes con COVID 19, de las cuales un 23.4% (n=15) requirió inducción de trabajo de parto, con una tasa de éxito para parto vaginal de un 66.7% (n=10). De estas pacientes, un 50% recibió Oxitocina, un 40% Dinosprostona y un 10% ambos medicamentos de forma secuencial. En las pacientes negativas, hubo un total de 568 nacimientos, con un 29.8% (n=169) de usuarias que requirieron inducción. La tasa de éxito para parto vaginal en este grupo fue de 72.2% (n=122), utilizando un 50% Oxitocina; un 27% Dinoprostona; un 14.8% ambas; y un 8.2% Balón de Cook. CONCLUSIONES: Sabemos que los resultados de este estudio están limitados por el bajo número de pacientes incluidas, sin embargo, podemos observar que, en nuestra experiencia con las pacientes que arrojaron PCR SARS-CoV-2 positivas, asintomáticas o con enfermedad leve, se logró realizar la inducción de trabajo de parto según protocolos habituales, obteniendo porcentajes de éxito para partos vaginales, similares a las pacientes sin la enfermedad.

INTRODUCTION AND OBJECTIVES: Describe the experience of deliveries in pregnant women with a confirmed diagnosis of COVID 19 by asymptomatic RT-PCR or with mild symptoms and those without the disease, and determine the success rate of vaginal delivery in the induction of labor. METHODS: Retrospective study of patients who had their delivery between 15th April and 03rd of July, 2020 in the San Juan de Dios Hospital. Patients induced with Dinoprostone, Oxytocin or both sequentially were included, and were divided according to COVID 19 status by RT-PCR on their admission process. The group of positive patients was demographically characterized and the data of both groups was determined in relation to the need for labor induction and its success for vaginal delivery. RESULTS: Of a total of 657 births, there were 9.7% (n = 64) of patients with COVID 19, of which 23.4% (n = 15) required labor induction, with a success rate for vaginal delivery of 66.7% (n = 10). Of these patients, 50% received Oxytocin, 40% Dinosprostone and 10% both drugs sequentially. In the negative patients, there were a total of 568 births, with 29.8% (n = 169) of users requiring labor induction. The success rate for vaginal delivery in this group was 72.2% (n = 122); 50% using Oxytocin; 27% Dinoprostone; 14.8% using both; and 8.2% using Cook's Catheter. CONCLUSIONS: We know that the results of this study are limited by the low number of patients included, however, in our experience, we can observe that, in patients with SARS-CoV-2 PCR positive, asymptomatic or with mild disease, it was possible to perform induction of labor according to standard protocols, achieving success rates for vaginal deliveries, similar to patients without the disease.

Asunto(s)

RESUMEN

OBJETIVO: Determinar la frecuencia y correlación de las episiotomías y desgarros en pacientes con parto eutócico. MATERIALES Y MÉTODOS: Estudio observacional y retrospectivo efectuado en el Hospital General Universitario de Alicante en dos periodos: 1) 2008-2012 y 2) 2013-2018. Se incluyen los partos eutócicos de embarazos únicos, a término, en presentación cefálica. Variables de estudio: episiotomía, desgarro, edad, semanas de embarazo, paridad, inducción del parto, cesárea anterior, analgesia regional, peso y sexo del recién nacido. Los resultados se expresan en porcentaje, coeficiente de correlación y las variables implicadas con razón de momios (RM). RESULTADOS: La tasa de episiotomía entre el periodo 1 vs el 2 disminuyó de manera muy importante: de 42.3 a 32.8%; [p < 0.001; RM: 0.81 (0.78-0.84)]. En cambio, el porcentaje de desgarros aumentó: de 42.7 a 50.8%; (p < 0.001; RM: 1.16[1.13-1.20]). El coeficiente de correlación fue de -0.91. Uno de los factores de riesgo asociados con la episiotomía fue la edad menor de 35 años, con RM de 1.25; IC95%: 1.16-1.35; p < 0.001, pero fue un factor protector de desgarros con RM de 0.76; IC95%: 0.71-0.81; p < 0.001. CONCLUSIONES: La tendencia de la episiotomía es decreciente, mientras que la de desgarro es inversamente proporcional. No se encontraron diferencias en la tasa de desgarro de III y IV grado.

Abstract OBJECTIVE: To determine the frequency and correlation of episiotomies and tears of patients with eutocic deliveries. MATERIALS AND METHODS: Observational and retrospective study carried out at the Hospital General de Alicante, Spain, in two periods: 1) 2008-2012 and 2) 2013-2018. Eutocic deliveries of single pregnancies, at term, in cephalic presentation are included. Study variables: episiotomies, tear, age, weeks of pregnancy, parity, labor induction, previous caesarean section, regional analgesia, weight and sex of the newborn. The results are expressed as a percentage, correlation coefficient and the variables involved with odds ratio. RESULTS: The episiotomy rate between period 1 vs. 2 decreased very significantly: 42.3% vs 32.8%; [p <0.001; OR: 0.81 (0.78-0.84)]. In contrast, the percentage of index tears: 42.7% vs 50.8%; (p <0.001; OR: 1.16 [1.13-1.20]). The correlation coefficient was -0.91. Regarding risk factors associated with episiotomy, one of them was the age under 35 years with an OR (95% CI): 1.25 (1.16-1.35; p <0.001), but it was a OR protective factor (95% CI): 0.76 (0.71-0.81; p <0.001) for the appearance of tears. CONCLUSIONS: The tendency in the realization of episiotomies is decreasing, while the tendency of the appearance of tears is inversely proportional. No differences were found in the tear rate of III and IV grade.

RESUMEN

Abstract Objective To access the benefits or harms of an exercise program, based on the current American College of Obstetricians and Gynecologists guidelines, on the mode of delivery, duration and onset of labor. Methods A study performed at the Hospital Senhora da Oliveira between October 2015 and February 2017. This was a quasi-experimental study involving 255 women divided into two groups: an intervention group engaged in a controlled and supervised exercise program during pregnancy (n = 99), and a control group that did not participate in the exercise program (n = 156). Data were collected in two stages: during the 1st trimester biochemical screening (before the beginning of the program), through a written questionnaire, and after delivery, from the medical files of the patients. The significance level in the present study was 5% (p = 0.05). Results The control group had higher odds of induced labor (odds ratio [OR] 2.71; 95% confidence interval [CI]: 1.42-5.17; p = 0.003), when compared with women who underwent the intervention. No differences were found between the groups in instrumental vaginal deliveries, cesarean rate, time until the beginning of the active phase, duration of the active phase, and duration of the second stage of labor. Conclusion The implementation of a controlled and supervised exercise program in pregnancy was associated with significantly lower odds of induced deliveries.

Resumo Objetivo Avaliar o efeito de um programa de exercícios na gravidez (baseado nas recomendações do American College of Obstetricians and Gynecologists) na via, duração e início do trabalho de parto. Métodos Estudo realizado no Hospital Senhora da Oliveira entre outubro de 2015 e fevereiro de 2017. Trata-se de um estudo quasi-experimental com 255 grávidas, divididas em dois grupos: grupo de intervenção, constituído por mulheres que participaram de um programa controlado e supervisionado de exercícios físicos (n = 99), e um grupo de controle, formado por grávidas que não participaram do programa de exercícios (n = 156). Os dados foram colhidos em dois momentos: durante o rastreio bioquímico do primeiro trimestre (antes do início do programa), através de um questionário escrito, e após o parto, através da consulta do processo clínico da paciente. O nível de significância estatística adotado neste projeto foi de 5% (p = 0,05). Resultados O grupo controle apresentou maior probabilidade de indução do trabalho de parto (razão de chances [RC] 2,71; intervalo de confiança [IC] 95%: 1,42-5,17; p = 0,003) quando comparado com o grupo de intervenção. Não foram encontradas diferenças estatisticamente significativas entre os dois grupos em relação à via de parto, tempo até início da fase ativa, duração da fase ativa e duração do segundo estadio do trabalho de parto. Conclusão A implementação de um programa de exercícios controlado e supervisionado na gravidez foi associada a uma probabilidade significativamente menor de indução do trabalho de parto.

Asunto(s)

RESUMEN

ResumenLas prácticas del cuidado del embarazo y el parto varían ampliamente entre los países, las instituciones y los diferentes equipos encargados del cuidado obstétrico: en este contexto con prácticas tan diversas, la práctica clínica basada en la evidencia permite que el accionar de los profesionales encargados del cuidado obstétrico se fundamente en la mejor evidencia disponible. El objetivo del presente estudio es analizar la mejor evidencia científica disponible sobre los efectos adversos del uso del balón cervical durante y posterior a la labor de parto, en comparación con el uso de prostaglandinas endocervicales para la inducción del parto en mujeres con embarazo a término. La secuencia de etapas para la recolección de la información se inició con la aplicación del mapa de búsqueda en las bases de datos MEDLINE, PUBMED y COCHRANE LIBRARY, a partir de los siguientes criterios de filtro de información: artículos publicados entre los años 2010 al 2015, mujeres gestantes de cualquier edad, únicamente se incluyó estudios como ensayos aleatorizados controlados, revisiones sistemáticas, meta-análisis o guías de práctica clínica y de preferencia artículos científicos en idioma inglés o portugués. Esta búsqueda y análisis de la evidencia encontrada se realizó durante los meses de abril y mayo del año 2015 por dos revisores. Los resultados obtenidos para el análisis crítico fueron revisados minuciosamente a través de la plataforma informática FCL 2.0 con las plantillas de ensayo clínico y revisión sistemática incluidas en los anexos. Se concluye que la utilización del balón endocervical comparado con el uso de prostaglandinas endocervicales presenta menos efectos adversos de manera específica durante la labor del parto. En relación con los efectos adversos posteriores, no se encuentra mayor diferencia entre uno u otro método.

AbstractPregnancy and childbirth care practices vary widely across countries, institutions, and different obstetrical care teams: in this context with such diverse practices, evidence-based clinical practice allows the Obstetric care is based on the best available evidence. The objective of the present study is to analyze the best available scientific evidence on the adverse effects of cervical balloon use during and after labor, compared to the use of endocervical prostaglandins for induction of labor in women with term pregnancy. The sequence of steps for the collection of information was initiated with the application of the search map in the databases MEDLINE, PUBMED and COCHRANE LIBRARY, based on the following information filter criteria: articles published between the years 2010 to 2015, Pregnant women of any age, only included studies such as randomized controlled trials, systematic reviews, meta-analyzes or guidelines of clinical practice and preferably scientific papers in English or Portuguese. This search and analysis of the evidence found was carried out during the months of April and May of the year 2015 by two reviewers. The results obtained for the critical analysis were carefully reviewed through the FCL 2.0 computer platform with the clinical trial templates and systematic review included in the annexes. It is concluded that the use of the endocervical balloon compared to the use of endocervical prostaglandins presents less adverse effects specifically during labor. In relation to the subsequent adverse effects, no greater difference is found between one or the other method.

ResumoPráticas de cuidados a gravidez eo parto variam amplamente entre os países, instituições e diferentes equipas de cuidados obstétricos; neste contexto como práticas diversas, a prática clínica baseada em evidências permite que as ações dos profissionais responsáveis pela assistência obstétrica é baseada na melhor evidência disponível. O objetivo deste estudo é analisar a melhor evidência científica disponível sobre os efeitos adversos durante e após o parto com o uso de bola cervical em comparação com o uso de prostaglandina endocervical para indução do parto em mulheres com gravidez a termo. A sequência dos passos para a recolha de dados começa com a busca do mapa aplicação em Medline, PubMed e os dados Cochrane Library, onde os seguintes critérios de filtro de informação artigos introduzidos foram seleccionados publicação período entre 2010 e 2015, a população foi delimitada a mulheres grávidas de qualquer idade, digite apenas ensaios estudos clínicos randomizados, revisões sistemáticas, meta-análises ou diretrizes de prática clínica e artigos científicos de preferência em Inglês ou Português foram incluídos. Esta pesquisa e análise da evidência encontrada foi realizado durante os meses de Abril e Maio de 2015, dois colaboradores. Os resultados obtidos para a análise crítica foram cuidadosamente controlados através da plataforma FCL computador 2,0 modelos ensaio clínico e revisão sistemática estão incluídos nos anexos. Concluiu-se que o uso de bola endocervical em comparação com a utilização de prostaglandinas endocervicais tem menos efeitos adversos especificamente durante o trabalho de parto. Em ligação com os efeitos adversos subsequentes não é maior diferença entre qualquer um dos métodos.

Asunto(s)

RESUMEN

Abstract Purpose To assess cases of labor induction with vaginal 25-μg tablets of misoprostol and maternal outcomes in a tertiary hospital in southeastern Brazil. Methods This was a retrospective cohort study of 412 pregnant women with indication for labor induction. Labor induction was performed with vaginal 25-μg tablets ofmisoprostol in pregnant women with Bishop scores < 6. Stepwise regression analysis was used to identify the factors present at the beginning of induction that could be used as predictors of successful labor induction. Results A total of 69% of the pregnant women who underwent labor induction progressed to vaginal delivery, and 31% of the women progressed to cesarean section. One or two misoprostol tablets were used in 244 patients (59.2%). Of the 412 patients, 197 (47.8%) required oxytocin later on in the labor process, after induction with misoprostol. The stepwise regression analysis showed that only Bishop scores of 4 and 5 and previous vaginal delivery were independent factors with statistical significance in the prediction of successful vaginal labor induction (β = 0.23, p < 0.001, for a Bishop score of 4 and 5, and β = 0.22, p < 0.001, for previous vaginal delivery). Conclusion Higher Bishop scores and previous vaginal delivery were the best predictors of successful labor induction with vaginal 25-μg tablets of misoprostol.

Resumo Objetivo Avaliar os casos de indução do trabalho de parto com misoprostol 25 mcg por via vaginal e seus desfechos maternos em um hospital terciário do Sudeste do Brasil. Métodos Realizou-se um estudo retrospectivo de coorte com 412 gestantes com indicações para indução de trabalho de parto. A indução do trabalho de parto foi realizada com misoprostol 25 mcg vaginal em gestantes com índice de Bishop < 6. Realizou-se análise de regressão stepwise para identificar os fatores presentes ao início da indução que poderiam ser usados como prognosticadores do sucesso da indução do trabalho de parto. Resultados A indução de trabalho de parto determinou 69% de partos normais, sendo que 31% evoluíram para cesárea. Em relação ao número de comprimidos de misoprostol, 1 ou 2 comprimidos foram utilizados em 244 pacientes (59,2%). Das 412 pacientes, 197 (47,8%) necessitaramde ocitocina após a indução commisoprostol para dar continuidade ao trabalho de parto. Na análise de regressão stepwise, apenas a presença de índice de Bishop 4 e 5 e parto vaginal prévio foram fatores independentes com significância estatística na predição do sucesso da indução emobter parto vaginal (β = 0,23, p < 0,001, para índice de Bishop 4 e 5, e β = 0,22, p < 0,001, para parto vaginal prévio). Conclusão Maiores índices de Bishop e parto vaginal prévio são os maiores prognosticadores do sucesso de indução de trabalho de parto com misoprostol 25 mcg vaginal.

Asunto(s)

RESUMEN

La inducción del parto resulta un procedimiento elemental en la práctica obstétrica, que se aplica en un grupo importante de pacientes para interrumpir con éxito el embarazo debido a riesgos materno y perinatal. En este artículo se expone brevemente un nuevo método que permite abordar con efectividad la respuesta a la oxitocina, después del uso del Misofar® en función facilitadora para inducir el parto, acortando la latencia en la rotura prematura de membranas y condicionando las estructuras cervicales en gestantes con preeclampsia para obtener una mejor respuesta. Esta nueva herramienta se pone a disposición de la comunidad médica, en beneficio materno y perinatal.

Labor induction is an elementary procedure in obstetrics that is applied in an important group of patients to successfully interrupt pregnancy due to maternal and perinatal risks. In this work, a new method that allows to approach with effectiveness the oxytocin response is briefly exposed, after the use of Misofar® in facilitator function to induce labor, shortening the latency in early break of membranes and conditioning the cervical structures in pregnant women with pre-eclampsia to obtain a better response. This new tool is at medical community disposal for the maternal and perinatal benefit.

Asunto(s)

RESUMEN

Objetivo. Comparar la efectividad de la sonda de Foley transcervical más oxitocina con oxitocina endovenosa sola, en la inducción del parto en embarazos a término. Diseño. Estudio de casos y controles. Institución. Hospital Central "Dr. Urquinaona", Maracaibo, Venezuela. Participantes. Embarazadas a término que asistieron para maduración cervical e inducción del parto asignadas al azar con sonda de Foley transcervical - oxitocina endovenosa (grupo A) u oxitocina endovenosa (grupo B). Principales medidas de resultado. Características generales, intervalo inicio de la inducción y el parto, tasa de parto vaginal, complicaciones maternas, variables perinatales y efectos adversos. Resultados. No se encontraron diferencias estadísticamente significativas entre los grupos con relación a las características generales (p = ns). Las pacientes del grupo A presentaron un intervalo significativamente menor desde el inicio de la inducción hasta el parto comparado con las pacientes del grupo B (p < 0,05). No se hallaron diferencias significativas con relación a la tasa de partos vaginales entre los grupos (p = ns). No hubieron diferencias en los valores de Ápgar al minuto y a los 5 minutos entre los recién nacidos de ambos grupos (p = ns). El efecto adverso más común en ambos grupos fue náuseas, pero no se hallaron diferencias estadísticamente significativas entre los grupos en la frecuencia de efectos adversos (p = ns). Conclusión. El uso sonda de Foley transcervical más oxitocina disminuye el intervalo entre el inicio de la inducción y el parto comparado con la oxitocina sola, con una incidencia similar de efectos adversos maternos y perinatales.

Objective: To compare the effectiveness of transcervical Foley catheter - oxytocin with oxytocin alone for labor induction in term pregnancies. Design: Case-control study. Setting: Hospital Central "Dr. Urquinaona", Maracaibo, Venezuela. Participants: Pregnant women undergoing cervical ripening and labor induction were randomly assigned to be treated with transcervical Foley catheter - oxytocin (group A) or oxytocin alone (group B). Main outcome measures: General characteristics, interval between beginning of induction and delivery, vaginal birth rate, maternal complications, perinatal variables, and adverse effects were evaluated. Results: There were no significant differences between groups in general characteristics (p = ns). Patients of group A showed a shorter interval between the beginning of induction and delivery compared with patients in group B (p < 0.05). There was no significant difference in vaginal birth rate between groups (p = ns). Newborns of both groups had similar mean values of Apgar scores at 1 minute and 5 minutes (p = ns). The most common adverse effect in both groups was nausea, but there were no significant differences between groups in frequency of adverse effects (p = ns). Conclusions: Use of transcervical Foley catheter - oxytocin shortened the interval between beginning of induction and delivery compared with oxytocin alone, with similar incidence of maternal and perinatal adverse effects.

RESUMEN

ABSTRACT Objective: Analyzing if the sonographic evaluation of the cervix (cervical shortening) is a prognostic marker for vaginal delivery. Methods: Women who underwent labor induction by using dinoprostone were enrolled. Before the induction and three hours after it, the cervical length was measured by ultrasonography to obtain the cervical shortening. The cervical shortening was introduced in logistic regression models among independent variables and for calculating receiver operating characteristic (ROC) curves. Results: Each centimeter in the cervical shortening increases the odds of vaginal delivery in 24.4% within 6 hours; in 16.1% within 24 hours; and in 10.5% within 48 hours. The best predictions for vaginal delivery are achieved for births within 6 and 24 hours, while the cervical shortening poorly predicts vaginal delivery within 48 hours. Conclusion: The greater the cervical shortening 3 hours after labor induction, the higher the likelihood of vaginal delivery within 6, 24 and 48 hours.

RESUMO Objetivo: Analisar se a avaliação ultrassonográfica do colo do útero (encurtamento) é um marcador prognóstico para parto normal. Métodos: Consideramos mulheres com trabalho de parto induzido usando dinoprostona. Antes da indução e três horas após, a extensão cervical foi medida por ultrassonografia para obter o encurtamento do colo do útero. O encurtamento do colo do útero foi aplicado em modelos de regressão dentre variáveis independentes. Curvas de Característica de Operação do Receptor foram calculadas. Resultados: Cada centímetro no encurtamento do colo do útero aumenta as chances de parto normal para 24,4% dentro de 6 horas; 16,1% dentro de 24 horas; e 10,5% dentro de 48 horas. Os melhores preditores de parto normal são alcançados para partos dentre 6 e 24 horas, enquanto o encurtamento prevê mal o parto normal dentro de 48 horas.

Asunto(s)

RESUMEN

Hormone-mediated quiescence involves the maintenance of a decreased inflammatory responsiveness. However, no study has investigated whether labor induction with prostanoids is associated with changes in the levels of maternal serum hormones. The objective of this study was to determine whether labor induction with dinoprostone is associated with changes in maternal serum progesterone, estradiol, and estriol levels. Blood samples were obtained from 81 pregnant women at term. Sixteen patients had vaginal birth after spontaneous labor, 12 required cesarean section after spontaneous labor and 16 underwent elective cesarean. Thirty-seven patients had labor induction with dinoprostone. Eligible patients received a vaginal insert of dinoprostone (10 mg) and were followed until delivery. Serum progesterone (P4), estradiol (E2) and estriol (E3) levels and changes in P4/E2, P4/E3 and E3/E2 ratios were monitored from admission to immediately before birth, and the association of these measures with the resulting clinical classification outcome (route of delivery and induction responsiveness) was assessed. Progesterone levels decreased from admission to birth in patients who underwent successful labor induction with dinoprostone [vaginal and cesarean birth after induced labor: 23% (P < 0.001) and 18% (P < 0.025) decrease, respectively], but not in those whose induction failed (6.4% decrease, P > 0.05). Estriol and estradiol levels, P4/E2, P4/E3 and E3/E2 ratios did not differ between groups. Successful dinoprostone-induced labor was associated with reduced maternal progesterone levels from induction to birth. While a causal relationship between progesterone decrease and effective dinoprostone-induced labor cannot be established, it is tempting to propose that dinoprostone may contribute to progesterone withdrawal and favor labor induction in humans.

Asunto(s)