[Association of blood pressure control effects on renal impairment with urinary protein: a study on the validity of the Japanese Society of Hypertension Guidelines for Management of Hypertension 2014].
2016
BACKGROUND AND OBJECTIVE: Progression of chronic kidney disease (CKD) leads to the onset of cardiovascular dis- eases and an increase in the number of patients requiring dialysis initiation. In prder to promote the early detection and treatment of CKD, we assessed the effects of blood pressure control on renal impairment based on common test items and verified the usefulness of the target blood pressure for patients with CKD described in the Japanese Society of Hypertension Guidelines for the Management of Hypertension in 2014 (JSH 2014). SUBJECTS AND METHODS: Among patients who had been regularly visiting the outpatient clinic of Kasukabe Kisen Hospital for 24 months or more, 67 with a serum creatinine level of 1.2 mg/dL or higher were included in this study. Clinical blood pressure measurements obtained at the start of follow-up and at 6, 12, 18, and 24 months were averaged to serve as the 2-year mean blood pressure, and the progression rates of renal impairment were com- pared between patients achieving and those not achieving the target blood pressure of the JSH 2014. RESULTS: Among the diabetic patients with CKD, significant differences in renal impairment progression rates were observed between those achieving and those not achieving the target blood pressure. Among the non-diabetic patients with CKD, those achieving the target blood pressure tended to show slower progression of renal impair- ment, but their progression rates were not significantly different from those of the patients not achieving the target blood pressure. CONCLUSION: Blood pressure control is essential for patients with CKD. In patients with diabetes mellitus, the pro- gression rates of renal impairment can be substantially reduced by maintaining blood pressure below the target blood pressure described in the JSH 2014.
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