Frailty status at hospital discharge may not reliably predict short-term outcomes in older adults undergoing PCI. A multi-center study published in the International Journal of Cardiology found no significant association between self-reported frailty status and the composite endpoint of 1-year mortality or all-cause readmission.

The investigation included 2,831 patients (median age 66 years, interquartile range 57–73; 21% women). Frailty was assessed using the Study of Osteoporotic Fractures (SOF) Frailty Index and categorized as robust, prefrail, or frail. The primary endpoint was evaluated using Cox regression adjusted for sociodemographic and clinical variables.

Among the cohort, 18% were frail, 33% prefrail, and 48% robust. The composite endpoint occurred in 45% of frail patients, compared with 33% of robust and 35% of prefrail patients. Frailty status did not remain independently associated with the primary endpoint after adjustment. In exploratory analyses, unintended weight loss among frail patients predicted increased readmission risk (adjusted hazard ratio 1.20; 95% CI 1.03–1.40). Better chair-rise performance was associated with reduced mortality (hazard ratio 0.32; 95% CI 0.11–0.92).

These findings indicate that global frailty categorization alone may not be sufficient for post-PCI risk assessment. Specific elements of the frailty phenotype, particularly weight loss and functional performance, may enhance prognostic evaluation.