Abstract
To raise the success rate of vaginal birth after cesarean (VBAC) without increasing maternal or perinatal morbidity and mortality rates. Of 468 women with a prior scar, 365 gave valid informed consent for our management of VBAC at Akashi Municipal Hospital during 1986-1999. Trials of labor (TOL) were attempted in 322 cases principally by waiting for spontaneous labor onset and teaching the patients a breathing method to avoid straining until expulsion by vacuum extraction become possible, controlling the intrauterine pressure. Our selection criteria for TOL changed during the trial; from 1991-1999 patients with a prior scar extending into fundus were excluded. Of the 322 TOL, 88.2% were successful, and VBAC was successful in 77.8% (284 of the 365 patients). Uterine rupture was observed in 2 cases (0.62%). Fetal death occurred in 1 case. Three women gave birth to neonates with a 1-minute Apgar score < or = 6. The rate of VBAC was 77.8% in all women with a prior scar. During our management of VBAC, maternal or perinatal morbidity and mortality rates did not increase significantly.
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