Heart failure - An unexplored risk factor for infective endocarditis after pacemaker implantation

Gennifer Wahbah Makhoul; Ahmad Mustafa; Chapman Wei; Joanne Ling; Shahkar Khan; Taqi Rizvi; Radu Grovu; Nnedi Asogwa; Samantha Lee; Mitchell Weinberg; James Lafferty

doi:10.1016/j.jjcc.2024.04.002

Heart failure - An unexplored risk factor for infective endocarditis after pacemaker implantation

J Cardiol. 2024 Apr 6:S0914-5087(24)00061-3. doi: 10.1016/j.jjcc.2024.04.002. Online ahead of print.

Authors

Affiliations

¹ Department of Internal Medicine, Staten Island University Hospital/Northwell Health, Staten Island, NY, USA.
² Department of Cardiology, Staten Island University Hospital/Northwell Health, Staten Island, NY, USA. Electronic address: amustafa3@northwell.edu.
³ Department of Cardiology, Staten Island University Hospital/Northwell Health, Staten Island, NY, USA.

PMID: 38583663
DOI: 10.1016/j.jjcc.2024.04.002

Abstract

Background: With the widespread use of permanent pacemakers (PPM), and increased mortality associated with pacemaker endocarditis, it is essential to evaluate comorbidities that could potentially increase the risk of infective endocarditis (IE). Heart failure (HF), a common comorbidity, has not been well studied as an independent risk factor for development of IE in individuals with PPM.

Methods: The US National Inpatient Sample database was used to sample individuals with PPM. Patients with concomitant implantable cardioverter defibrillator, acute heart failure, history of endocarditis, intravenous drug use, prosthetic heart valves, or central venous catheter infection were excluded. Propensity matching was performed to match patients with and without HF. Pre- and post-match logistic regression was performed to assess HF as an independent risk factor for IE. A subgroup analysis was performed comparing IE rates between patients with HF with reduced (HFrEF) vs preserved (HFpEF) ejection fraction.

Results: Out of 333,571 patients with PPM included in the study, 121,862 (37 %) had HF. HF patients were older and had a higher prevalence of females. All comorbidities except for dental disease and cancer were more prevalent in the HF group. Patients with HF were 1.30 times more likely to develop IE [OR: 1.30 (1.16-1.47); p < 0.001]. The two cohorts were then matched for age, gender, and 20 comorbidities using a 1:1 propensity score matching algorithm. After matching, HF was still independently associated with increased risk of IE [OR: 1.62 (1.36-1.93); p < 0.001]. In our sub-group analysis, HFrEF and HFpEF patients had similar IE rates.

Conclusion: In PPM population, HF was associated with an increased risk of IE compared to those without HF. We hypothesize that HF being a low-flow and high-inflammatory state might have contributed to this increased risk. Larger studies are required to corroborate our findings and evaluate the need for antimicrobial prophylaxis for this population.

Keywords: Heart failure; Infective endocarditis; Permanent pacemaker.