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Clinical and Experimental Nephrology

, Volume 14, Issue 4, pp 333–339 | Cite as

Different clinical outcomes for cardiovascular events and mortality in chronic kidney disease according to underlying renal disease: the Gonryo study

  • Masaaki NakayamaEmail author
  • Toshinobu Sato
  • Hiroshi Sato
  • Yuji Yamaguchi
  • Katsuya Obara
  • Isao Kurihara
  • Kazuto Sato
  • Osamu Hotta
  • Jin Seino
  • Masahiro Miyata
  • Kazuhisa Takeuchi
  • Kenji Nakayama
  • Masato Matsushima
  • Tetsuya Otaka
  • Yasumichi Kinoshita
  • Yoshio Taguma
  • Sadayoshi Ito
Original Article

Abstract

Purpose

Chronic kidney disease (CKD) can result from a wide variety of diseases, but whether clinical outcomes differ in the same CKD stages according to the underlying renal disease remains unclear. Clarification of this issue is important for stratifying risk of cardiovascular disease (CVD) and death in patients before dialysis.

Patients and methods

The study comprised 2,692 patients recruited from 11 outpatient nephrology clinics, classified by underlying disease of primary renal disease (PRD) (n = 1,306), hypertensive nephropathy (HN) (n = 458), diabetic nephropathy (DN) (n = 283), or other nephropathies (ON) (n = 645). Risks of events such as ischemic heart disease, congestive heart failure, stroke, and all-cause mortality within 12 months were examined by logistic regression analysis in each group.

Result

During the 12-months’ observation from recruitment, 200 cases were lost to follow-up, and 113 cases were introduced to chronic dialysis therapy. A total of 69 CVD events occurred (stroke in 27 cases), and 24 patients died. In total, increased odds ratios (OR) for the events by CKD stage (cf. CKD1 + 2: unadjusted) were CKD3, 1.29 [95% confidence interval (CI), 0.70–2.17]; CKD4, 2.73 (1.55–4.83); and CKD5, 4.66 (2.63–8.23). Regarding events in respective groups, no significant differences were seen by CKD stage except for the group with HN, but significant differences were seen by underlying diseases (cf. PRD: adjusted for confounding factors, including estimated glomerular filtration rate): HN, 2.57 (1.09–6.04); DN, 12.21 (3.90–38.20); and ON, 4.14 (1.93–8.89).

Conclusion

Risk of CVD and mortality due to CKD needs to be stratified according to the underlying renal diseases.

Keywords

Chronic kidney disease Cardiovascular disease Nephritis Hypertension Diabetic nephropathy 

Notes

Acknowledgments

This study was supported by Grant from Astellas Pharma Inc. The authors express their special thanks to Mrs. Makiko Nakayama and Mr. Jun Sakaino for their devoted assistance to the study projects. Study contributors: Akira Sugiura (Osaki Citizen Hospital), Tasuku Nagasawa, Noriko Miyazawa, Takuma Hosoya (Tohoku University School of Medicine), Naoki Akiu (Sendai City Hospital), Hiroo Noshiro, Mariko Miyazaki, Kazuyuki Suzuki, Mitsuhiro Sato, Norio Ieiri, Yoshinori Tsuchiya, Kozo Sato, Tomoyoshi Kimura, Aki Ishida (Sendai Shakaihoken Hospital).

Conflict of interest statement

None.

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Copyright information

© Japanese Society of Nephrology 2010

Authors and Affiliations

  • Masaaki Nakayama
    • 1
    Email author
  • Toshinobu Sato
    • 2
  • Hiroshi Sato
    • 1
  • Yuji Yamaguchi
    • 3
  • Katsuya Obara
    • 4
  • Isao Kurihara
    • 5
  • Kazuto Sato
    • 6
  • Osamu Hotta
    • 2
  • Jin Seino
    • 7
  • Masahiro Miyata
    • 8
  • Kazuhisa Takeuchi
    • 9
  • Kenji Nakayama
    • 10
  • Masato Matsushima
    • 11
  • Tetsuya Otaka
    • 12
  • Yasumichi Kinoshita
    • 6
  • Yoshio Taguma
    • 2
  • Sadayoshi Ito
    • 1
  1. 1.Tohoku University Graduate School of MedicineSendaiJapan
  2. 2.Sendai Shakaihoken HospitalSendaiJapan
  3. 3.Japanese Red Cross Sendai HospitalSendaiJapan
  4. 4.Tohoku Kosai HospitalSendaiJapan
  5. 5.Tohoku Kosai Miyagino HospitalSendaiJapan
  6. 6.Japanese Red Cross Ishinomaki HospitalIshinomakiJapan
  7. 7.Sendai Medical CenterSendaiJapan
  8. 8.Osaki Citizen HospitalOsakiJapan
  9. 9.Koujinkai Central Hemodialysis ClinicSendaiJapan
  10. 10.Sendai City HospitalSendaiJapan
  11. 11.The Jikei University School of MedicineTokyoJapan
  12. 12.Katta General HospitalShiroishiJapan

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