ABSTRACT
The present study was conducted to determine the reasons of failure of VBAC after previous one caesarean section. Descriptive type of study. This study was carried out in the department of obstetrics and gynecology Ayub Teaching Hospital Abbott Abad from 21 October, 2007 to 20 April 2008. The study population included 201 cases that were declared eligible for TOL having only one previous CS for non recurrent cause, a low transverse uterine scar, and adequate pelvis. All the findings were noted and recorded on predesigned proformas. Data was analyzed on SPSS version 10.Discriptive statistics were used to calculate Mean and standard Deviation for age, frequencies for abnormal lie, fetal distress, failure to progress, placeta previa, and other maternal or fetal causes of failed trial. Chi square test was used to test for significant difference of frequencies between groups; the student T test was used for significant Result A total of 201 patients with previous one caesarean section were admitted. VBAC was successful in 60 patients, the rest i.e. 77 patients were given trial of labor but failed. Among them 20[26%] failure was due to scar tenderness in the prospective pregnancy, 15[19.5%] patients had emergency lower segment CS for failure to progress, 8[10.4%] patients had another CS for fetal distress, 6[7.8%] had CS for impending rupture, 1[1.3%] had failed trial of labor due to rupture of uterus and 4[5.2%] had scar dehiscence. Results show that trial of labor in patients with previous one caesarean section due to non-recurrent causes is safe and has a success rate of 43.7%, which brings a hope to check the existing rate of CS