An association between the heat-humidity index and preterm labor and delivery: a preliminary analysis.

Objectives: The goal of this study was to determine whether a relationship exists between heat-humidity indexes and rates of preterm labor and preterm delivery.

Methods: Preterm labor and delivery rates were compared during the 2 summer and 2 winter weeks with the highest and lowest heat-humidity indexes for each season.

Results: The rate of preterm labor increased consistently from 1.

Sonographic appearance of suspected iatrogenic uterine perforation. A case report.

A case of iatrogenic uterine perforation occurred during dilation and curettage for treatment of a missed abortion at 14 weeks' gestation. Real-time transabdominal sonography was used to detect the fundal perforation and to follow serially the amount of fluid in the cul-de-sac. It is recommended that this noninvasive and direct diagnostic tool be used in the management of uterine perforation.