A prospective randomized trial was conducted in 148 women to compare the efficacy of two regimens of vaginal misoprostol for termination of second trimester pregnancy. Women aged 16-40 years requesting termination of second trimester pregnancy were randomized into two groups. Women in group 1 were given vaginal misoprostol 400 microg every 3 h for a maximum of five doses in 24 h. Women in group 2 were given vaginal misoprostol 400 microg every 6 h for a maximum of three doses in 24 h. If women did not abort in 24 h, the same regimen was repeated. The median induction-abortion interval in group 1 (15.2 h) was significantly shorter (P < 0.01) than that in the group 2 (19.0 h). The percentage of women who achieved successful abortion within 48 h in group 1 (90.5%) was also significantly higher (P < 0.02) than that in group 2 (75.7%). The incidence of fever was more common in group 1 (P = 0.01). It is concluded that the regimen of vaginal misoprostol 400 microg every 3 h with maximum of five doses in 24 h was more effective than the regimen of misoprostol every 6 h in termination of second trimester pregnancy.
A retrospective study of 316 ovarian neoplasms which had frozen section evaluation between January 1, 1990 to December 31, 1995 was conducted to determine the accuracy of frozen section diagnosis of ovarian neoplasms. The frozen section results were compared with final diagnoses from paraffin sections. The frozen section diagnosis was accurate in 95.2% of all cases and inaccurate in 4.8%. The positive predictive value of a positive (or malignant) frozen section was 100%, the negative predictive value of a negative (or benign) frozen section was 98.2%. The sensitivity for malignant tumors as 87%. For tumors of borderline malignancy, the sensitivity and specificity were 60% and 98.6% respectively. Of the false negative frozen section diagnoses, 73% (8 cases) occurred in tumors of borderline malignancy. We concluded that with the exception of the sensitivity for the diagnosis of tumors of borderline malignancy, the sensitivity and specificity of frozen section diagnosis for benign and overtly malignant ovarian neoplasms are high.
Oral misoprostol 50 microg every 4 h is safe, cheap, and as effective as 100 microg in reducing the PROM to delivery time interval and labor duration in primiparous women. The same effect is not observed in a multiparous group.
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