1. Left atrial volume and adverse cardiovascular outcomes in unselected patients with and without CKD.
- Author
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Hee L, Nguyen T, Whatmough M, Descallar J, Chen J, Kapila S, French JK, and Thomas L
- Subjects
- Adult, Aged, Cardiovascular Diseases diagnostic imaging, Cardiovascular Diseases mortality, Cardiovascular Diseases physiopathology, Disease-Free Survival, Echocardiography, Doppler, Female, Glomerular Filtration Rate, Heart Atria diagnostic imaging, Heart Atria physiopathology, Humans, Incidence, Kaplan-Meier Estimate, Kidney physiopathology, Male, Middle Aged, Multivariate Analysis, New South Wales, Odds Ratio, Prevalence, Proportional Hazards Models, Renal Insufficiency, Chronic diagnosis, Renal Insufficiency, Chronic mortality, Renal Insufficiency, Chronic physiopathology, Retrospective Studies, Risk Assessment, Risk Factors, Stroke Volume, Time Factors, Ventricular Function, Left, Atrial Function, Left, Atrial Remodeling, Cardiovascular Diseases etiology, Renal Insufficiency, Chronic complications
- Abstract
Background and Objectives: Patients with CKD have increased cardiovascular morbidity and mortality. This study investigated the prognostic value of common clinical echocardiographic parameters., Design, Setting, Participants, & Measurements: There were 289 unselected consecutive patients who had a transthoracic echocardiogram between January and June 2003. Patients with stage 3 or 4 CKD (n=49) were compared with those with eGFR≥60 ml/min per 1.73 m(2), n=240). Left ventricular volume, ejection fraction and mass, left atrial volume, and function parameters were measured. The primary endpoint, determined a priori, was a composite of cardiac death, myocardial infarction, and congestive cardiac failure., Results: Patients were followed for a median 5.6 years. The incidence of the primary endpoint was higher in patients with CKD (29% versus 12%, P=0.001), who were older and had a higher prevalence of hypertension and ischemic heart disease. Indexed left ventricular mass (LVMI) and left atrial volume (LAVI) were higher in patients with CKD. Furthermore, patients with LAVI>32 ml/m(2) had significantly lower event-free survival than patients with normal (<28 ml/m(2)) or mildly dilated LAVI (28-32 ml/m(2)) (P<0.001). Multivariate analysis showed that age (odds ratio [OR], 1.19; 95% confidence interval [95% CI], 1.08 to 1.31; P=0.001) and LVMI (OR, 3.66; 95% CI, 2.47 to 5.41; P<0.001) were independently associated with LAVI>32 ml/m(2). Multivariate Cox regression analysis demonstrated that CKD (hazard ratio [HR], 1.13; 95% CI, 1.01 to 1.26; P=0.04), hypertension (HR, 2.18; 95% CI, 1.05 to 4.54; P=0.04), and a larger LAVI (HR, 1.35; 95% CI, 1.02 to 1.77; P=0.04) were independent predictors of the primary endpoint., Conclusions: Patients with CKD were at higher risk for cardiovascular events. LAVI was significantly larger in the CKD group and was a predictor of adverse cardiac events., (Copyright © 2014 by the American Society of Nephrology.)
- Published
- 2014
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