Objective
To describe sedation management in children supported on extracorporeal membrane oxygenation (ECMO) for acute respiratory failure.
Design
Secondary analysis of prospectively collected data from a multicenter randomized trial of sedation (RESTORE).
Setting
21 U.S. Pediatric Intensive Care Units.
Patients
1255 children, 2 weeks to 17 years old, with moderate/severe PARDS.
Interventions
Sedation managed per usual care or RESTORE protocol.
Measurements and Main Results
Sixty-one (5%) RESTORE patients with moderate/severe PARDS were supported on ECMO, including 29 managed per RESTORE protocol. Most ECMO patients received neuromuscular blockade (46%) or were heavily sedated with SBS scores −3/−2 (34%) by ECMO day 3. Median opioid and benzodiazepine doses on the day of cannulation, 0.15 mg/kg/hr (3.7 mg/kg/day) and 0.11 mg/kg/hr (2.8 mg/kg/day), increased by 36% and 58%, respectively, by ECMO day 3. In the 41 patients successfully decannulated prior to study discharge, patients were receiving 0.40 mg/kg/hr opioids (9.7 mg/kg/day) and 0.39 mg/kg/hr benzodiazepines (9.4 mg/kg/day) at decannulation, an increase from cannulation of 108% and 192%, respectively (both p<0.001). ECMO patients experienced more clinically significant iatrogenic withdrawal than moderate/severe PARDS patients managed without ECMO support (p<0.001). Compared to ECMO patients managed per RESTORE protocol, usual care ECMO patients received more opioids during the study period (mean cumulative dose of 183.0 vs 89.8 mg/kg; p=0.02), over 6.5 greater exposure days (p=0.002) with no differences in wakefulness or agitation.
Conclusions
In children, the initiation of ECMO support is associated with deep sedation, substantial sedative exposure, and increased incidence of iatrogenic withdrawal syndrome. A standardized, goal-directed, nurse-driven sedation protocol may help mitigate these effects.