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  • Title: Left ventricular hypertrophy versus chronic kidney disease as predictors of cardiovascular events in hypertension: a Greek 6-year-follow-up study.
    Author: Tsioufis C, Vezali E, Tsiachris D, Dimitriadis K, Taxiarchou E, Chatzis D, Thomopoulos C, Syrseloudis D, Stefanadi E, Mihas C, Katsi V, Papademetriou V, Stefanadis C.
    Journal: J Hypertens; 2009 Apr; 27(4):744-52. PubMed ID: 19516174.
    Abstract:
    OBJECTIVES: We assessed the comparative prognostic role of left ventricular hypertrophy (LVH) and chronic kidney disease (CKD) for major cardiovascular events in a prospective observational study in Greek essential hypertensive patients. METHODS: We followed up 1652 hypertensive patients (mean age 54.3 years, 696 male patients, office blood pressure 147/93 mmHg) free of cardiovascular disease for a mean period of 6 years. CKD and echocardiographically detected LVH were evaluated at baseline along with five major traditional risk factors [age > 65 years, sex, current smoking, diabetes mellitus and dyslipidemia (low density lipoprotein > 160 mg/dl)]. End points of interest were the incidence of coronary artery disease, stroke, all-cause mortality and their composite. RESULTS: At the end of follow-up, coronary artery disease was the most prevalent (5.2%), followed by stroke (5%) and total mortality (3.1%). The presence of both LVH and CKD is associated with a 2.5-fold increase in coronary artery disease (P = 0.034), four-fold in stroke (P = 0.002) and 3.2-fold in the composite (P < 0.001), whereas the presence of LVH alone was associated with a 2.5-fold higher risk for stroke (P = 0.009) and 1.7-fold for the composite (P = 0.018). By multivariate Cox regression analysis, LVH (hazard ratio = 1.53, P = 0.036) and CKD (hazard ratio = 1.66, P = 0.039) turned out to be independent prognosticators of the composite end point, whereas age more than 65 years (hazard ratio = 4.59, P < 0.001) and the presence of LVH (hazard ratio = 2.01, P = 0.043) were the only predictors of stroke. CONCLUSIONS: In hypertensive patients free of cardiovascular disease, CKD and LVH are both independent prognosticators of the composite end point of all-cause death and cardiovascular morbidity, whereas LVH but not CKD is a major predictor for stroke.
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