Crash Cesarean Section After Early ROSC in Pregnant Cardiac Arrest

Primary Rationale for PMCD Despite Early ROSC

The American Heart Association suggests that aortocaval compression from the gravid uterus persists even after ROSC is achieved, continuing to compromise maternal cardiac output and venous return in patients ≥20 weeks gestation 1, 3.
The critical physiologic principle is that early ROSC does not guarantee sustained maternal stability, and preparation for PMCD should begin immediately upon recognition of cardiac arrest in any pregnant patient ≥20 weeks gestation 1, 6, 3, 8.

The American Heart Association recommends continuing high-quality CPR with manual left uterine displacement throughout resuscitation, and summoning PMCD resources immediately upon recognition of cardiac arrest 7, 3.
The guideline suggests that if uterine fundus is at or above the umbilicus (≥20 weeks), strongly consider proceeding with PMCD even with ROSC, as aortocaval compression continues to compromise maternal hemodynamics 1, 7, 3.

For patients ≥24-25 weeks gestation, both maternal and fetal outcomes are optimized by delivery within 5 minutes of arrest onset, according to the American Heart Association 1, 4.
For patients ≥30 weeks gestation, infant survival is documented even with delivery >5 minutes from arrest 4.
For patients 20-24 weeks gestation, PMCD is primarily a maternal resuscitative measure to relieve aortocaval compression 7, 3.

The American Heart Association advises against assuming that early ROSC eliminates the need for PMCD, as the physiologic burden of the gravid uterus persists and can precipitate re-arrest 1.
The guideline recommends against delaying PMCD waiting for surgical equipment or transport to the OR, and instead performing the procedure at the site of arrest with only a scalpel required 1, 2.

The 2020 AHA Guidelines acknowledge that the clinical decision for PMCD timing is complex and depends on practitioner training, patient factors, and system resources 3, 8.
The 2024 International Consensus reaffirms that there is insufficient evidence to define a specific time interval for delivery, but shorter times from arrest to delivery are associated with improved outcomes 9.