Abstract
Objective: To clarify the relationships between the preoperative physical function and the development of ICU-acquired delirium (ICU-AD) in cardiac surgery patients. Methods: The subjects included 107 patients who underwent elective cardiac surgery from October 2013 to May 2014 in our hospital. They were classified into the ICU-AD group and the no-ICU-AD group. The age, sex, body weight, BMI, medical history, preoperative physical function, cognitive and mental function, cardiac ultrasound test results, blood biochemistry test results, surgery information, and postoperative ICU information, were compared between the two groups. Results: The preoperative lower knee extension muscle strength (0.31±0.11 kgf/kg vs 0.40±0.14 kgf/kg, P<0.05), grip strength (21.4±10.7 kgf vs 28.2±10.4 kgf, P<0.05) and one leg standing time (5.3±3.6 seconds vs 25.7±22.4 seconds, P<0.01) in the ICU-AD group were significantly lower than those in the no-ICU-AD group. The results of a logistic regression analysis revealed that the preoperative one leg standing time, depression and total ventilation time were predictors of ICU-AD. Conclusion: The preoperative physical function of the patients who developed ICU-AD after cardiac surgery was lower than that of the patients who did not develop ICU-AD.
