Maternal Hypothermia Triggers Fetal Bradycardia A Rare Obstetric Emergency Unfolded

Introduction:

When Cold Affects Two Live

This case involved a 27 year old first time pregnant woman admitted with acute pyelonephritis at 27 weeks gestation. Notable observations included:

  • Sudden Drop in Maternal Body Temperature: Patient’s core temperature dropped to 33.8°C, inadvertently caused by poor air conditioning.
  • Fetal Heart Rate Response: The fetus’s baseline heart rate declined from 131 bpm to 82 88 bpm, indicating bradycardia.
  • Immediate Conservative Intervention:
    • Intravenous infusion of warmed fluids
    • Application of thermal blankets
    • Continuous monitoring of fetal response
  • Gradual Recovery: Within 2 hours, both maternal temperature and fetal heart rate returned to normal, avoiding invasive procedures.

Why This Case Matters

  • Rare Mechanism Identified: Hypothermia is rarely considered a cause of fetal bradycardia, making this case medically significant.
  • Conservative Management: Avoided cesarean or pharmacologic interventions; only warming techniques were used.
  • Successful Outcome: The fetus continued to grow normally and no adverse events were noted on follow-up.

External Perspective on Maternal Temperature and Fetal Health

Further Reading and Resources

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