• Simone Thomas, Jane H Burridge, Marcus Pohl, Frank Oehmichen, and Jan Mehrholz.
• Wissenschaftliches Institut, Klinik Bavaria Kreischa, , Germany.
• J Rehabil Med. 2016 Oct 12; 48 (9): 793-798.

ObjectivesTo describe the time course of recovery of sit-to-stand function in patients with intensive-care-unit-acquired muscle weakness and the impact of recovery.MethodsA cohort study in post-acute intensive care unit and rehabilitation units. Patients with chronic critical illness and intensive-care-unit-acquired muscle weakness were included. Sit-to-stand function was measured daily, using a standardized chair height, defined as 120% of the individual's knee height.ResultsA total of 150 patients were recruited according to the selection criteria. The primary outcome of independent sit-to-stand function was achieved by a median of 56 days (interquartile range Q1-Q3 = 32-90 days) after rehabilitation onset and a median of 113 days (Q1-Q3=70-148 days) after onset of illness. The final multivariate model for recovery of sit-to-stand function included 3 variables: age (adjusted hazard ratio (HR) = 0.96 (95% CI 0.94-0.99), duration of ventilation (HR=0.99 (95% CI 0.98-1.00) and Functional Status Score for the Intensive Care Unit (FSS-ICU) (adjusted HR=1.12 (95% CI 1.08-1.16)).ConclusionRapid recovery of sit-to-stand function for most patients with intensive-care-unit-acquired muscle weakness were seen. The variables older age and longer duration of ventilation decreased, and higher FSS-ICU increased the chance of regaining independent sit-to-stand function.

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