Accuracy of the fetal pelvic disproportion in term breech

ABSTRACT

In this study, the efficacy of the fetal pelvic index [FPI] was evaluated in 100 women in labor with breech presentation and was compared with that of two other means. Of the 32 women who needed cesarean sections, 29 had positive FPI values [sensitivity of 0.91]. Three women had false negative FPI and two of them had cesarean section for cord prolapse later in labor. Of the 68 patients who delivered vaginally, 65 had negative FPI values [specificity of 0.96]. Of the 32 women with positive FPI, 29 required cesarean section. In contrast, neither x-ray pelvimetry nor USEFW >/ 4000 gm provided an accurate identification of feto-pelvic disproportion