Effect of early mobilization on functional recovery in ICU patients with post-COVID ARDS

Background. The COVID-19 pandemic has significantly increased the number of patients requiring intensive care unit (ICU) admissions due to severe complications such as acute respiratory distress syndrome (ARDS). Prolonged ICU stays, often associated with immobility, lead to muscle weakness, ICU-acquired weakness (ICU-AW), and reduced functional status, which impede recovery. Early mobilization in the ICU has been proposed as a beneficial intervention to mitigate these effects, but its impact on patients with post-COVID ARDS remains underexplored. Objective. This study aimed to evaluate the effect of early mobilization on functional recovery in ICU patients with post-COVID ARDS. Methods. A prospective, randomized controlled trial was conducted at Saveetha Medical College and Hospital, Chennai, from August 2021 to August 2024. Two hundred patients with post-COVID ARDS were randomly assigned to either an early mobilization or standard care group. The early mobilization group received structured physical therapy interventions within 48 hours of ICU admission. Functional status was measured using the ICU Mobility Scale (IMS) and Functional Status Scale ICU (FSS ICU) at baseline, weekly, and discharge. Secondary outcomes included the duration of ICU stay, mechanical ventilation, and incidence of ICU-AW. Results. Patients in the early mobilization group demonstrated significantly higher functional recovery, with a mean IMS score of 7.8 ± 1.2 compared to 4.3 ± 1.5 in the standard care group (p < 0.001). The FSS ICU score was also significantly higher in the early mobilization group (90.6 ± 8.3) than in the standard care group (65.4 ± 10.7; p < 0.001). Additionally, early mobilization reduced the mean ICU stay (14.5 ± 3.2 vs. 19.8 ± 4.1 days, p < 0.001), shortened the duration of mechanical ventilation (10.1 ± 2.9 vs. 13.7 ± 3.6 days, p < 0.001), and decreased the incidence of ICU-AW (20% vs. 45%, p = 0.002). Conclusion. Early mobilization significantly improves functional recovery, reduces ICU stay and mechanical ventilation duration, and lowers ICU-AW risk in post-COVID ARDS patients. These findings highlight the importance of integrating early mobility into standard ICU care to enhance patient outcomes.