Exercise in pregnancy: the impact of an intervention program in the duration of labor and mode of delivery / Exercício na gravidez: impacto de um programa de intervenção na duração do trabalho de parto e via de parto

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.

A comparative study of the effect of drotaverine hydrochloride with hyoscine butylbromide in first stage of labor.

Background: Prolongation of labor is one such dilemma that every obstetrician tries to avoid. The ultimate aim of the obstetrician is to accomplish the delivery in the shortest possible time without compromising maternal and fetal safety. Prolonged labor often ends up in great suffering to the parturient because of dehydration, confusion, and infection. This study aims to compare the efficacy of drotaverine hydrochloride with hyoscine butyl bromide for increasing the rate of cervical dilatation and to compare their duration of labor. Methods: This was a prospective interventional study conducted on 60 women who were randomly allocated to Group I, which was control group, women in Group II were injected hyoscine butylbromide one ampoule (20 mg) and the women in Group III were injected drotaverine hydrochloride one ampoule (40 mg) intramuscular at 3 cm dilatation of cervix. The data collected was statistically analyzed using SPSS version 15. Results: When compared to Group I (control group), Group II and Group III took lower time for all the three stages of labor. However, intergroup difference was significant only for Stage I (p<0.001). However, no significant difference was observed between Groups II and III (p=0.964). A significant difference among group was observed in total duration of labor too (p<0.001). Between group comparisons for Stage II and Stage III did not show a statistically significant intergroup difference for any of the comparisons (p>0.05). Conclusions: The finding in this study suggested a significant impact of both the drugs in first stage as well as total duration of labor as compared to control group. However, no significant difference between two study groups was observed. Thus, both drotaverine hydrochloride and hyoscine butylbromide could effectively reduce first stage as well as total duration of labor.

Comparative study of prostaglandin E2 gel with oxytocin infusion for induction of labor.

Objectives - To compare the safety and efficacy of prostaglandin E2 gel with I.V. oxytocin for induction of labour. Methods - Over 200 pregnant women admitted for induction of labour were randomly allocated into two groups; Group A (100 women) who had pre induction cervical ripening with prostaglandin E2 gel; Group B(100 women) who received IV oxytocin without cervical ripening. Statistical analysis used: Student t test, Z test, correlation of coefficient. Results: The demographic characteristics of the women and indications of labor in both groups were comparable. The mean Bishop score at 12 hours in group A and group B were 9.33 ±1.63 and 5.76 ±3.07 respectively and were statistically significant (p<0.05). The mean duration of labor in group A was 8.99±4.7 hours and in group B was 16.22±5.11 hours. The difference was highly significant (p< 0.0005). The complications and side effects were minimal with good neonatal outcome in group A compared to group B. Conclusion: Prostaglandin E2 gel when used intracervically is a safe and effective method for induction of labour.

Evaluation of the factors affecting the success of the trial of vaginal birth and duration of labor in women with previous cesarean section / 대한산부인과학회지

OBJECTIVE: The purpose of this study was to determine which factors influence the likelihood of successful trial of labor, to evaluate the risks of VBAC and to evaluate the criteria of dystocia and the safety of VBAC. METHODS: This retrospective study was peformed based on 61 pregnant women who succeeded VBAC, 37 VBAC failure women, 100 nulliparas and 100 multiparas. RESULTS: In clinical characteristics, the parity, the number of previous cesarean section, gestational age, estimated fetal body weight by ultrasonography, and neonatal body weight had notable differences between the success and the failure group. In obstetric and historical factors, cervical effacement, dilation, and Bishop score at admission, spontaneous labor and method of induction of labor had differences. Among these factors, estimated fetal body weight by ultrasonography, cervical effacement and augmentation of labor using oxytocin were the most prognostic factors affecting the success of VBAC. In VBAC group, the duration of active-phase, second phase and total duration of labor were 313.5, 36.4 and 350.2 minutes, which were significantly shorter than nulliparas, but longer than multiparas. CONCLUSION: The trial of labor after cesarean section will decrease repeat operation, if it is performed under exact understanding of successful prognostic factors and the unique time length of labor. It will contribute to increase advantages for mother and economic benefits.

The Impact of Previous Cervical Dilatation on the Duration of Vaginal Birth after Cesarean Delivery / 대한주산의학회잡지

OBJECTIVE: This study examined the effect of a maximal cervical dilatation prior to their primary cesarean birth on the time length of labor in women attempting vaginal birth after cesarean section (VBAC). METHODS: From January 2000 to Jun 2005, a total of 526 patients with VBAC were entered into the study. Patients were classified into 4 groups according to the maximal cervical dilatation on the prior cesarean birth: Group 1 (0~3 cm), Group 2 (4~7 cm), Group 3 (8~9 cm), and Group 4 (10 cm). RESULTS: An analysis of the duration of labor showed that the time length of active phase was significantly shorter in each of Group 3 (147.3+/-103.9 minutes) and 4 (155.2+/-104.2 minutes) than in Group 1 (192.9+/-126.0 minutes) or 2 (195.1+/-148.2 minutes) (p or =8 cm than those without. Study results indicate that prior cervical dilatation may affect the labor time of subsequent VBAC. The proper understanding of the association between prior cervical dilatation and labor time on a subsequent VBAC may be useful for better management or further intervention in the setting of VABC.