Summary
IMPORTANCE: Prediction of operative risk is a critical step in decision making for cardiac surgery. Existing risk models may be improved by integrating a measure of frailty, such as 5-m gait speed, to better capture the heterogeneity of the older adult population. OBJECTIVE: To determine the association of 5-m gait speed with operative mortality and morbidity in older adults undergoing cardiac surgery. DESIGN, SETTING, AND PARTICIPANTS: A prospective cohort study was conducted from July 1, 2011, to March 31, 2014, at 109 centers participating in the Society of Thoracic Surgeons Adult Cardiac Surgery Database. The 5-m gait speed test was performed in 15 171 patients aged 60 years or older undergoing coronary artery bypass graft, aortic valve surgery, mitral valve surgery, or combined proced
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