Abstract
The aim of the study was to determine the acute effects of thermal stress on maternal and fetal circulatory responses in normal and hypertensive patients. Therefore we studied 14 healthy pregnant women and 12 women with compromised pregnancies during short-term heat stress using color Doppler ultrasound in addition to conventional follow-up methods. The uterine vascular resistance increased significantly during the exposure in the high-risk pregnancy group without change in the control group. The results of the present study give strong support to our earlier studies that short-term heat stress seems to be safe in uncomplicated pregnancies but may be detrimental in high-risk pregnancies.
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