What is the maximum time recommended by AHA to initiate a cesarean section during maternal cardiopulmonary arrest if the patient is over 24 weeks pregnant?

The American Heart Association (AHA) guidelines recommend that, in the event of maternal cardiopulmonary arrest when a patient is more than 24 weeks pregnant, a cesarean section should be initiated as soon as possible, ideally within 4 minutes. This is based on the critical need to relieve pressure from the gravid uterus on major blood vessels, specifically the inferior vena cava, which can impede venous return and worsen maternal circulation during resuscitation efforts.

Performing an emergency cesarean section within this timeframe can significantly improve outcomes for both the mother and the fetus, thus making the 4-minute recommendation vital in emergency protocols. Rapid intervention is essential to enhance the survival chances of the fetus and provide better resuscitation conditions for the mother.