RT Journal Article SR Electronic T1 Optimal Prone Position Duration in Patients With ARDS Due to COVID-19: The Omelette Pilot Trial JF Respiratory Care FD American Association for Respiratory Care SP 806 OP 818 DO 10.4187/respcare.11192 VO 69 IS 7 A1 Sáez de la Fuente, Ignacio A1 Marcos Morales, Adrián A1 Muñoz Calahorro, Reyes A1 Álvaro Valiente, Elena A1 Sánchez-Bayton Griffith, María A1 Chacón Alves, Silvia A1 Molina Collado, Zaira A1 González de Aledo, Amanda Lesmes A1 Martín Badía, Isaías A1 González Fernández, María A1 Orejón García, Lidia A1 Arribas López, Primitivo A1 Temprano Vázquez, Susana A1 Sánchez Izquierdo Riera, José Ángel YR 2024 UL http://rc.rcjournal.com/content/69/7/806.abstract AB BACKGROUND: Prone position (PP) has been widely used in the COVID-19 pandemic for ARDS management. However, the optimal length of a PP session is still controversial. This study aimed to evaluate the effects of prolonged versus standard PP duration in subjects with ARDS due to COVID-19.METHODS: This was a single-center, randomized controlled, parallel, and open pilot trial including adult subjects diagnosed with severe ARDS due to COVID-19 receiving invasive mechanical ventilation that met criteria for PP between March–September 2021. Subjects were randomized to the intervention group of prolonged PP (48 h) versus the standard of care PP (∼16 h). The primary outcome variable for the trial was ventilator-free days (VFDs) to day 28.RESULTS: We enrolled 60 subjects. VFDs were not significantly different in the standard PP group (18 [interquartile range [IQR] 0–23] VFDs vs 7.5 [IQR 0–19.0] VFDs; difference, −10.5 (95% CI −3.5 to 19.0, P = .08). Prolonged PP was associated with longer time to successful extubation in survivors (13.00 [IQR 8.75–26.00] d vs 8.00 [IQR 5.00–10.25] d; difference, 5 [95% CI 0–15], P = .001). Prolonged PP was also significantly associated with longer ICU stay (18.5 [IQR 11.8–25.3] d vs 11.50 [IQR 7.75–25.00] d, P = .050) and extended administration of neuromuscular blockers (12.50 [IQR 5.75–20.00] d vs 5.0 [IQR 2.0–14.5] d, P = .005). Prolonged PP was associated with significant muscular impairment according to lower Medical Research Council values (59.6 [IQR 59.1–60.0] vs 56.5 [IQR 54.1–58.9], P = .02).CONCLUSIONS: Among subjects with severe ARDS due to COVID-19, there was no difference in 28-d VFDs between prolonged and standard PP strategy. However, prolonged PP was associated with a longer ICU stay, increased use of neuromuscular blockers, and greater muscular impairment. This suggests that prolonged PP is not superior to the current recommended standard of care.