Monitoring of Potential Safety Events and Vital Signs during Active Mobilization of Patients Undergoing Continuous Renal Replacement Therapy in a Medical Intensive Care Unit

Background/Aims: This study aims to evaluate potential safety events and vital sign changes during active mobilization physical therapy (PT) in critically ill patients undergoing continuous renal replacement therapy (CRRT). Methods: A retrospective review was performed on 29 patients who were treated with CRRT and who underwent 81 PT sessions in a medical intensive care unit at a single referral hospital; 15 patients underwent 33 sessions with passive range of motion (PROM) and 17 patients underwent 48 active mobilization PT sessions. Three patients received both types of PT including 8 PROM and 5 active mobilization PT sessions. The occurrences of safety events and vital sign changes during active mobilization PT sessions were evaluated. Results: The safety events did not develop during 33 sessions with PROM. However, there were 2 safety events (4.1%) during 48 active mobilization PT sessions including one session with mobilization in the bed and the other in a sitting position on the edge of the bed. These safety events exclusively developed during active mobilization PT sessions, in which concomitant extracorporeal membrane oxygenation (ECMO) support and CRRT were delivered. Regarding vital sign changes during PT sessions, there were no significant differences in systolic blood pressure (BP), diastolic BP, mean arterial pressure, heart rate, respiratory rate, or peripheral oxygen saturation before and after both PROM and active mobilization PT sessions. Conclusions: This study showed that active mobilization PT can be performed safely in patients who are being treated with CRRT without a significant hemodynamic change. However, the development of potential safety events in patients with ECMO needs to be monitored carefully.

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