Association of cardiac valvular calcifications and C-reactive protein with cardiovascular mortality in incident hemodialysis patients: A Japanese cohort study

Hiroshi Takahashi, Hideki Ishii, Toru Aoyama, Daisuke Kamoi, Hirotake Kasuga, Yasuhiko Ito, Kaoru Yasuda, Miho Tanaka, Daiji Yoshikawa, Shoichi Maruyama, Seiichi Matsuo, Toyoaki Murohara, Yukio Yuzawa

研究成果: Article

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Background: Cardiac valve calcification is seen frequently in patients undergoing dialysis. Serum C-reactive protein (CRP) level also is reported to predict future cardiovascular events. We investigated the association among valve calcification, CRP level, and mortality in patients with end-stage renal disease who were just beginning hemodialysis (HD) therapy. Study Design: Observational cohort. Setting & Participants: 1,290 consecutive patients who just started HD therapy were enrolled and were followed up to 10 years. Predictor: Patients were divided into 3 groups according to number of calcified valves: those without valve calcification, those with calcification in a single (aortic or mitral) valve, and those with calcification in both valves. They also were divided into tertiles according to CRP level. Outcomes: Cardiovascular and all-cause mortality. Measurements: Echocardiography and CRP measurement were performed within 1 month after beginning HD therapy. Results: During follow-up (median, 51 months), 335 (25.9%) patients died, including 156 (12.1%) of cardiovascular disease. The adjusted HR for cardiovascular mortality was 2.80 (95% CI, 1.63-4.81) for 2 calcifications versus 0 (P < 0.001). Furthermore, the risk of cardiovascular mortality was 3.66-fold higher in patients with calcifications in both valves (highest tertile of CRP) compared with patients without valve calcification (lowest tertile of CRP; P < 0.001). Limitations: Precise medical treatments or therapeutic interventions were not evaluated. Conclusions: Valve calcification and elevated CRP levels were not only related to additively increased risk of mortality, but also improved the prediction of mortality in patients with end-stage renal disease who had just begun HD therapy.

元の言語English
ページ(範囲)254-261
ページ数8
ジャーナルAmerican Journal of Kidney Diseases
61
発行部数2
DOI
出版物ステータスPublished - 01-02-2013

All Science Journal Classification (ASJC) codes

  • Nephrology

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    Takahashi, H., Ishii, H., Aoyama, T., Kamoi, D., Kasuga, H., Ito, Y., Yasuda, K., Tanaka, M., Yoshikawa, D., Maruyama, S., Matsuo, S., Murohara, T., & Yuzawa, Y. (2013). Association of cardiac valvular calcifications and C-reactive protein with cardiovascular mortality in incident hemodialysis patients: A Japanese cohort study. American Journal of Kidney Diseases, 61(2), 254-261. https://doi.org/10.1053/j.ajkd.2012.09.007