Highlights ■ Nursing workload is high with patients undergoing extracorporeal membrane oxygenation. ■ The initial 24 hours of extracorporeal membrane oxygenation have the highest workload, quantified using the Nursing Activities Score. ■ Presence of COVID-19 and delayed extracorporeal membrane oxygenation initiation increase the workload in the initial 24 hours of extracorporeal membrane oxygenation. ■ Extracorporeal membrane oxygenation care demands adjustments in the nurse-to-patient ratio in the intensive care unit. ABSTRACT Objective: To identify the factors associated with nursing workload with […]