Epinephrine Dosing Use During Extracorporeal Cardiopulmonary Resuscitation: Single-Center Retrospective Cohort

Area of Science:

• Pediatric Critical Care Medicine
• Cardiovascular Research
• Extracorporeal Life Support

Background:

• Pediatric cardiac arrest guidelines recommend epinephrine administration.
• The effect of epinephrine on systemic afterload in patients on extracorporeal membrane oxygenation (ECMO) is not well understood.

Purpose of the Study:

• To investigate the association between epinephrine dosing and systemic afterload in pediatric patients undergoing ECMO during resuscitation.
• To evaluate the impact of epinephrine on ECMO support parameters.

Main Methods:

• Retrospective observational study of pediatric patients (0-18 years) requiring ECMO during resuscitation.
• Analyzed time from last epinephrine dose to ECMO initiation, cumulative dose, and arrest time.
• Assessed systemic afterload using mean arterial pressure and vasodilator use; ECMO support via pump flow and Vasoactive-Inotrope Score (VIS).

Main Results:

• A total of 69 events in 87 patients were analyzed.
• The median interval between the last epinephrine dose and ECMO initiation was 6 minutes.
• Shorter epinephrine-ECMO intervals correlated with increased vasodilator use (p=0.05) but not significantly with mean arterial pressure (p=0.06) or other ECMO support measures.

Conclusions:

• Limited evidence suggests epinephrine dosing during cardiac arrest is not associated with increased afterload post-ECMO cannulation.
• Further studies are required to validate these findings and assess clinical outcomes.