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Korean Journal of Obstetrics & Gynecology 2003;46(7):1288-1293.
Published online July 1, 2003.
Predicting Factors for Trial of Labor in Women Attempting Vaginal Birth after Cesarean Delivery.
Moon Kyoung Cho, Yoon Ha Kim, Sang Hyun Park, Seok Mo Kim, Tae Bok Song
Department of Obstetrics and Gynecology, College of Medicine, Chonnam National University, Gwangju, Korea.
To determine predicting factors associated with successful trials of labor in women attending vaginal birth after cesarean delivery. METHODS: A retrospective chart review from January 1998 through December 2001 of 330 patients (sucess group n=282, failure group n=48) undergoing trials of labor after cesarean delivery at Chonnam National University Hospital. Data were tested for statistical significance with the Student's t-test and the Chi-square test. RESULTS: The following characteristics were found to be statistically significant positive prognostic indicators: lower gestational age (274.0+/-20.6 vs. 281.1+/-7.9 days, p<0.01); higher gravity (1.3+/-0.5 vs. 1.0+/-0.2, p<0.01); higher maternal weight gain during pregnancy (3238+/-543 vs. 3458+/-497 gram, p<0.01); lower birth weight (7.8+/-2.7 vs. 6.6+/-2.5, p<0.01); history of prior trial of labor success (0.17 vs. 0.02, p<0.01), lower birth weight at prior cesarean section (3257+/-460 vs. 3838+/-411 gram, p<0.05). CONCLUSIONS: The characteristics associated with successful trials of labor after cesarean delivery-Bishop score at admission, history of prior vaginal delivery will provide information that may be helpful to the physician and the patient. Trial of labor (probability)=e(13.48+0.14Bishop score+1.06vaginal delivery history-0.001birth weight-0.259gestational age)/1+e(13.48+0.14Bishop score+1.06vaginal delivery history-0.001birth weight-0.259gestational age)
Key Words: Predicting factors, Trials of labor

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