In this population-based case-control study of elderly patients on an ACE or ARB, the risk of hyperkalemia-associated hospitalization was 7 times higher for patients with a recent prescription for trimethoprim-sulfamethoxazole, compared to amoxicillin (with no increased risk with other comparator antibiotics), even after matching for age, sex, renal insufficiency, and diabetes. For elderly patients on an ACE or ARB, the risk of hyperkalemia should be considered before being prescribed trimethoprim-sulfamethoxazole (abstract)
Dr. Scheurer is a clinical hospitalist and the Medical Director of Quality and Safety at the Medical University of South Carolina in Charleston, South Carolina, and is Assistant Professor of Medicine. She is a graduate of the University of Tennessee College of Medicine, completed her residency at Duke University, and completed her Masters in Clinical Research at the Medical University of South Carolina. She also serves as the Web Editor and Physician Advisor for the Society of Hospital Medicine.