Piperacillin/Tazobactam Use vs Cefepime May Be Associated With Acute Decompensated Heart Failure.

Background: Piperacillin/tazobactam (PTZ) has been cautiously used or avoided in patients with a history of heart disease due to concern for heart failure (HF) exacerbation given its relatively high sodium content. However, no prior studies have established this association.

Methods: The Antimicrobial Stewardship Team at the James H. Quillen Veterans Affairs Medical Center reviewed the use of PTZ vs the comparator antibiotic, cefepime, in 2 consecutive years to determine whether the use of PTZ was more likely to be associated with acute decompensation of HF. Records of 389 veterans hospitalized in 2018 and 2019 were reviewed and included in this study.

Results: Acute decompensation of HF was significantly associated with the use of PTZ (n = 25; 12.3%) compared with cefepime (n = 4; 2.2%) ( < .001). Additionally, hospital readmissions due to HF were higher in the PTZ group compared with the cefepime group (11 vs 1, = .02). There were no significant differences identified in the length of stay or overall mortality between 204 patients who received PTZ compared with 185 patients who received cefepime ( = .54 and = .63, respectively).

Conclusions: PTZ use was significantly associated with a higher incidence of acute decompensation of HF and hospital readmission with HF exacerbation compared with cefepime. PTZ use among hospitalized patients with a history of HF should be carefully monitored or avoided.