Renal insufficiency in concert with renin-angiotensinaldosterone inhibition is a major risk factor for hyperkalemia associated with low-dose trimethoprim-sulfamethoxazole in adults

Kazuhiko Higashioka, Hiroaki Niiro, Kenji Yoshida, Kensuke Oryoji, Kazuo Kamada, Shinichi Mizuki, Eisuke Yokota

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Objective Low-dose trimethoprim-sulfamethoxazole (TMP-SMX) is commonly used to prevent pneumocystis pneumonia in daily practice. Previous reports have shown a relationship between high-or standard-dose of TMP-SMX and hyperkalemia, however it remains unclear whether this is true for low-dose TMP-SMX. In this study we sought to determine the risk factors for hyperkalemia associated with low-dose TMP-SMX. Methods In this retrospective cohort study, 186 consecutive adult patients who received TMP-SMX as prophylaxis for pneumocystis pneumonia from January 2014 to January 2015 were evaluated. Data on the patients’ age, gender, baseline estimated glomerular filtration rate (eGFR), baseline serum potassium, maximum serum potassium, duration reaching the maximal serum potassium level, dosage, and concomitant use of angiotensin-converting enzyme inhibitors (ACEi)/angiotensin receptor blockers (ARB),ß -blockers, nonsteroidal anti-inflammatory drugs and potassium-sparing diuretics were retrospectively collected. Hyperkalemia was defined as a serum potassium level ≥5 mEq/L. Univariate and multivariate analyses were performed. Results The median age of the patients was 66 years and 51.1% were men. Hyperkalemia associated with low-dose TMP-SMX was observed in 32 patients (17.2%). The median duration to reach the maximal serum potassium level was 12 days. The multivariate logistic regression analysis identified renal insufficiency to be a major risk factor for hyperkalemia associated with low-dose TMP-SMX (eGFR <60 mL/min/1.73 m2, adjusted OR 4.62). Moreover, in the subpopulation of patients with renal insufficiency, ACEi/ARB use was considered to be a major risk factor for hyperkalemia (adjusted OR 3.96). Conclusion Renal insufficiency in concert with ACEi/ARB use is a major risk factor for hyperkalemia induced by low-dose TMP-SMX.

Original languageEnglish
Pages (from-to)467-471
Number of pages5
JournalInternal Medicine
Volume55
Issue number5
DOIs
Publication statusPublished - Mar 1 2016

All Science Journal Classification (ASJC) codes

  • Internal Medicine

Fingerprint Dive into the research topics of 'Renal insufficiency in concert with renin-angiotensinaldosterone inhibition is a major risk factor for hyperkalemia associated with low-dose trimethoprim-sulfamethoxazole in adults'. Together they form a unique fingerprint.

  • Cite this