Outcome of term breech delivery in primigravidae. a feto peivicbreech index.
Analysis of 340 term breech presentations in primigravidas showed a corrected perinatal mortality of 1.5%; the elective cesarean section rate was 15%. The incidence of complicated labour, defined in the study, was analyzed with regard to different parameters, e.g. X-ray pelvimetry data in all 340 cases. Complicated labour in vaginal deliveries markedly increased with increasing fetal weight (p less than 0.001) and decreasing pelvic capacity (p less than 0.001). In each case the fetal weight and smallest pelvimetry data were given score points and the sum of these was called the Feto Pelvic Breech Index, which was correlated to the incidence of complicated labour. By using this index the mortality and the routine use of elective cesarean section. The prognostic methods available to detect feto-pelvic disproportion are discussed.