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  • Title: [Increased incidence of coronary artery disease and cardiac death in elderly diabetic nephropathy patients undergoing chronic hemodialysis therapy].
    Author: Toriyama T, Yokoya M, Nishida Y, Kawajiri K, Takahashi H, Kawahara H.
    Journal: J Cardiol; 2000 Sep; 36(3):165-71. PubMed ID: 11022652.
    Abstract:
    OBJECTIVES: The incidence of coronary artery disease and cardiac death was investigated in elderly diabetic patients undergoing chronic hemodialysis therapy. METHODS: Three hundred thirty-five patients who began hemodialysis therapy since 1992 were followed up by echocardiography and treadmill exercise testing. Coronary angiography was also performed in patients with angina pectoris. Angina pectoris was defined as clinical symptoms > Canadian Cardiovascular Society classification II, and asynergy findings by echocardiography or ST depression > 0.1 mV during the treadmill exercise test. Coronary artery stenosis was defined as narrowing > or = 75%. Patients were divided into 4 groups: diabetic nephropathy (DN) > or = 65 years old (Group O/DN, n = 56), DN < 65 years old (Group Y/DN, n = 84), non-DN > or = 65 years old (Group O/non-DN, n = 76) and non-DN < 65 years old (Group Y/non-DN, n = 119). RESULTS: Between 1992 and 1998, there were 137 patients with angina pectoris (40.9%), 79 with coronary artery stenosis (23.6%) and 37 with cardiac death (11.0%). Cumulative incidences of angina pectoris, coronary artery stenosis and cardiac death were significantly higher in the following order of groups; O/DN > Y/DN > O/non-DN > Y/non-DN. Five-year cumulative incidences of angina pectoris, coronary artery stenosis and cardiac death in Groups O/DN vs Y/non-DN were 72.2% vs 38.6%, 53.7% vs 12.2% and 50.6% vs 3.5%, respectively. Relative risks of aging and diabetic nephropathy for angina pectoris, coronary artery stenosis and cardiac death were 3.8, 7.9 and 22.4, respectively (p < 0.0001). CONCLUSIONS: Aging and the presence of diabetes are strong risk factors for coronary artery disease and cardiac death in hemodialysis patients. Therefore, diagnosis and treatment of coronary artery disease should be achieved at the early stage of hemodialysis therapy.
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