Abstract
Background and aims
An aging population leads to the increased prevalence of coronary artery disease (CAD) and chronic renal insufficiency (CRI). Nevertheless, the prevalence, clinical predictors, and prognostic impact of CRI in very old Chinese patients with CAD are unclear.Methods
Baseline characteristics were obtained from 1,050 old patients with CAD. The endpoint was all-cause mortality during the mean follow-up period of 417 days.Results
The median age of the subjects was 86 years (range 60-104 years). CRI was present in 372 patients (35.4%). Age [hazard ratio (HR) 1.032, 95% confidence interval (95% CI) 1.010-1.054], chronic heart failure (CHF) (HR 2.361, 95% CI 1.747-3.191), hypertension (HR 1.878, 95% CI 1.291-2.731), hemoglobin (HR 0.973, 95% CI 0.965-0.981), serum albumin (HR 0.954, 95% CI 0.912-0.995), HDL-C (HR 0.371, 95% CI 0.238-0.580), and LDL-C levels (HR 0.795, 95% CI 0.656-0.965) were independent predictors of CRI (all P Conclusions
A high prevalence of CRI with a high associated mortality rate existed in very old Chinese patients with CAD. CRI was an independent risk factor of adverse prognosis for these patients, and multiple predictors could be used to identify CAD patients at increased risk for CRI or poor survival.