Fever during pregnancy and spontaneous abortion

Area of Science:

• Obstetrics and Gynecology
• Reproductive Health
• Epidemiology

Background:

• Maternal fever during pregnancy is a potential risk factor for adverse pregnancy outcomes.
• Distinguishing fever as a cause versus a symptom of spontaneous abortion is crucial for understanding its role.

Purpose of the Study:

• To investigate the association between maternal fever and spontaneous abortion.
• To determine if fever is linked to euploid versus aneuploid abortions.

Main Methods:

• A case-control study compared fever frequencies in women with euploid abortions, aneuploid abortions, and controls (term deliveries).
• Data were collected from three New York City hospitals between 1979 and 1982.
• The timing of fever relative to the abortion was also analyzed.

Main Results:

• Fever was significantly more frequent in women with euploid abortions compared to controls (18% vs. 7.1%).
• No significant association was found between fever and aneuploid abortions (3.9% vs. 7.1%).
• The odds ratio for fever decreased as the interval between fever and euploid abortion increased.

Conclusions:

• Maternal fever appears to be a risk factor for spontaneous euploid abortions.
• The findings suggest fever may act as an antecedent cause rather than a symptom of spontaneous abortion.
• Further research into the mechanisms linking fever and euploid abortion is warranted.