Prospective study of hyperhomocysteinemia as an adverse cardiovascular risk factor in end-stage renal disease

Circulation
A MoustaphaV Dennis

Abstract

Retrospective and case-control studies show that hyperhomocysteinemia is an independent risk factor for atherosclerosis in patients with end-stage renal disease. We studied prospectively the association between total homocysteine and cardiovascular outcomes. In all, 167 patients (93 men, 74 women; mean age, 56.3+/-14.7 years) were followed for a mean duration of 17.4+/-6.4 months. Cardiovascular events and causes of mortality were related to total homocysteine values and other cardiovascular risk factors. Cox regression analysis was used to identify the independent predictors for cardiovascular events and mortality. Fifty-five patients (33%) developed cardiovascular events and 31 (19%) died, 12 (8%) of cardiovascular causes. Total plasma homocysteine values ranged between 7.9 and 315.0 micromol/L. Levels were higher in patients who had cardiovascular events or died of cardiovascular causes (43.0+/-48.6 versus 26.9+/-14.9 micromol/L, P=.02). The relative risk (RR) for cardiovascular events, including death, increased 1% per micromol/L increase in total homocysteine concentration (RR, 1.01; CI, 1.00 to 1.01; P=.01). These prospective observations confirm that hyperhomocysteinemia is an independent risk factor for cardiovascular m...Continue Reading

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