[Influence of the type of breech presentation on delivery in selected primiparous women at term].

OBJECTIVE: Study the effect of the type of breech presentation on the prognosis of delivery in selected primiparous women at term.

PATIENTS AND METHODS: We reviewed retrospectively 146 breech presentations seen between January 1, 1993 and December 12, 1999 in our unit. We limited our study to primiparous mothers at term (> or = 37 weeks gestation) who had had a normal single fetus pregnancy and who had accepted a trial of labor. We analyzed the mode of labor termination, and maternal, fetal, ovular, obstetrical and neonatal features by type of breech presentation and by type of delivery. We collected data by manual search of the patients' registered files (AUDIPOG). The chi-squared and Fisher's tests were used as appropriate for statistical analysis.

RESULTS: Spontaneous vaginal delivery was achieved in 10.3% of the cases and non-spontaneous vaginal delivery in 56.2%. Cesarean section during labor was required in 33.5%. There was no significant difference between frank breech presentation (27.4%) and incomplete breech presentation (72.6%). Maternal, fetal, ovular, obstetrical and neonatal features were not significantly different.

CONCLUSIONS: Unlike data reported by others, our series did not demonstrate any significant feature predictive of obstetrical and neonatal prognosis irrespective of the type of breech presentation in selected primiparous women at term who had had a normal pregnancy.