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  • Title: Renin-angiotensin system blockade is not associated with hyperkalemia in chronic hemodialysis patients.
    Author: Lin HH, Yang YF, Chang JK, Ting IW, Kuo HL, Wang IK, Huang CC.
    Journal: Ren Fail; 2009; 31(10):942-5. PubMed ID: 20030530.
    Abstract:
    BACKGROUND: Serious hyperkalemia was reported in 10% of chronic hemodialysis (HD) patients that could lead to arrhythmia and death. Angiotensin-converting enzyme inhibitors (ACE-I) and angiotensin II receptor blockers (ARB) are well accepted for cardio-protective benefits. The relationship between renin-angiotensin system blockade (RASB) and hyperkalemia in chronic HD patients remains controversial. The aim of this study was to find the relationship between RASB and hyperkalemia in these patients. METHODS: Pre-dialysis serum potassium, clinical factors, and drugs were evaluated in 200 chronic HD patients in one HD center. Hyperkalemia was defined as serum K >or= 5.3 meq/L. Finally, multivariate analysis with logistic regression was used to evaluate the risk of hyperkalemia by RASB and other factors. RESULTS: In 200 patients, the mean K was 4.93 +/- 0.79 meq/L, and 70 (35%) patients had hyperkalemia. Fifty-eight (29%) patients were prescribed with RASB. Seven variables--non-DM, longer HD duration, lower dialysate calcium, lower serum glucose, higher serum iPTH, not using RASB, and not using furosemide--were more frequent in hyperkalemia group. In logistic regression analysis, RASB was associated with decreased odds for hyperkalemia (OR 0.262, p = 0.001 in model A; OR 0.205, p = 0.001 in model B). In addition, furosemide was associated with decreased odds for hyperkalemia (OR 0.068, p = 0.022 in model B). CONCLUSIONS: RASB is not associated with hyperkalemia in chronic HD patients.
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