A laboratory-based frailty index predicts mortality in ischemic stroke with carotid artery stenosis: a retrospective analysis from the MIMIC-IV database

Ischemic stroke (IS), particularly due to carotid artery stenosis (CAS), is a major global contributor to mortality and disability. Frailty, characterized by systemic physiological decline and reduced homeostatic reserves, has emerged as a powerful prognostic marker across a wide range of diseases. We aimed to evaluate the prognostic utility of a laboratory-based frailty index (FI-Lab) in patients with IS secondary to CAS (IS-CAS), focusing on short- and long-term mortality. Data were extracted...