NDT Advance Access originally published online on May 29, 2008
Nephrology Dialysis Transplantation 2008 23(11):3605-3612; doi:10.1093/ndt/gfn304
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Effect of amlodipine on cardiovascular events in hypertensive haemodialysis patients
1 Medizinische Klinik Nephrologie 2 Medizinische Statistik und Biometrie, Charité Campus Benjamin Franklin, Berlin, Germany
Correspondence and offprint requests to: Martin Tepel, Medizinische Klinik Nephrologie, Charité Campus Benjamin Franklin, Hindenburgdamm 30, 12200 Berlin, Germany. Fax: +49-30-8445-4235; E-mail: martin.tepel{at}charite.de
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Background. Hypertensive haemodialysis patients may be at a high risk for cardiovascular events. This study was undertaken to ascertain whether the calcium channel blocker amlodipine reduces mortality and cardiovascular events in these high-risk patients.
Methods. We evaluated the effects of amlodipine on cardiovascular events in 251 hypertensive haemodialysis patients in an investigator-designed, prospective, randomized, double-blind, placebo-controlled, multicenter trial. One hundred and twenty-three patients were randomly assigned to amlodipine (10 mg once daily) and 128 to placebo. The primary endpoint was mortality from any cause. The secondary endpoint was a composite variable consisting of mortality from any cause or cardiovascular event. Analysis was by intention-to-treat. The trial was registered with ClinicalTrials.gov (number NCT00124969 [ClinicalTrials.gov] ).
Results. The median age of patients was 61 years (25% percentile – 75% percentile, 47–69), and the median follow-up was 19 months (8–30). Fifteen (12%) of the 123 patients assigned to amlodipine and 22 (17%) of the 128 patients assigned to placebo had a primary endpoint [hazard ratio 0.65 (95% CI 0.34–1.23); P = 0.19]. Nineteen (15%) of the 123 haemodialysis patients assigned to amlodipine and 32 (25%) of the 128 haemodialysis patients assigned to placebo reached the secondary composite endpoint [hazard ratio 0.53 (95% CI 0.31–0.93); P = 0.03].
Conclusion. Amlodipine safely reduces systolic blood pressure and it may have a beneficial effect on cardiovascular outcomes in hypertensive haemodialysis patients.
Keywords: calcium channel blocker; cardiovascular risk; chronic kidney disease
Received for publication: 7. 2.08
Accepted in revised form: 6. 5.08
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