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DOI: 10.2337/dc05-1887
© 2006 by the American Diabetes Association
Clinical Care/Education/Nutrition |
Impact of Glycemic Control on Survival of Diabetic Patients on Chronic Regular Hemodialysis
A 7-year observational study
1 Division of Metabolism, Endocrinology, and Molecular Medicine, Department of Internal Medicine, Osaka City University Graduate School of Medicine, Osaka, Japan
2 Department of Internal Medicine, Inoue Hospital, Suita, Japan
Address correspondence and reprint requests to Masanori Emoto, MD, Division of Metabolism, Endocrinology, and Molecular Medicine, Department of Internal Medicine, Osaka City University Graduate Medical School, 1-4-3, Asahi-machi, Abeno-ku, Osaka, Japan 545-8585. E-mail: memoto{at}med.osaka-cu.ac.jp
OBJECTIVE—To investigate the impact of glycemic control during regular hemodialysis on the survival of diabetic patients with chronic kidney disease (CKD) in a longitudinal observational study.
RESEARCH DESIGN AND METHODS—A total of 114 diabetic CKD patients on hemodialysis at Inoue Hospital (Suita, Japan) were surveyed from May 1995 to December 2002 (survey period 45.5 ± 29.3 [means ± SD] months). All subjects were categorized into three groups by mean HbA1c (A1C) level during the 3-month period on hemodialysis preceding entry, as follows: good (A1C <6.5%, 5.7 ± 0.4%, n = 34), fair (6.5 
A1C < 8.0%, 7.2 ± 0.4%, n = 39), and poor (A1C 
8.0%, 9.2 ± 0.9%, n = 41) A1C groups.
RESULTS—There were no significant differences in age at entry, initiation of hemodialysis, duration of hemodialysis, blood pressure, cardiothoracic ratio, serum creatinine level, or hemoglobin level among the three groups. The cumulative survival of the poor A1C group during the survey was significantly lower than that of the fair and good A1C groups as determined by Kaplan-Meier estimation (P = 0.041, log-rank test). In a multivariate Cox proportional hazard model, both poor A1C group (hazard ratio 2.889, P = 0.010) and mean A1C (1.260 per 1.0%, P = 0.003) were significant predictors of survival.
CONCLUSIONS—In diabetic CKD patients on regular hemodialysis, poor glycemic control is an independent predictor of prognosis. This finding indicates the importance of careful management of glycemic control even after initiation of hemodialysis.
Abbreviations: CKD, chronic kidney disease • ODDS, Osaka Diabetes and Dialysis Study
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