Highlights ■ Peripheral muscle strength outperformed the Rapid Shallow Breathing Index in predicting extubation success. ■ Extubation was successful in 83% patients within a 48-hour monitoring period. ■ Peripheral muscle strength showed strong predictive accuracy. ■ Rapid Shallow Breathing Index demonstrated limited value as a predictor of extubation success. ABSTRACT Objective: To evaluate the effects of peripheral muscle strength on extubation success after cardiac surgery. Methods: In this prospective cohort study, peripheral muscle strength and Rapid Shallow Breathing Index were […]