Why the study?
Prosthetic valve endocarditis is a feared complication after valve surgery, but studies on differences in bacteriology across various types of PVE are limited.
Does the type of prosthetic valve affect the microbiological etiology in patients with prosthetic valve endocarditis?
Population
749 patients with 780 episodes of PVE
Comparison
Mechanical vs bioprosthetic valves, valve localization, and early vs late PVE
Design
Nationwide registry-based retrospective study
Key result
Mechanical prosthetic valves were significantly more likely to have endocarditis caused by Staphylococcus aureus compared to bioprosthetic valves (36% vs. 17%, p < 0.001).
Authors
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May inform microbiologic suspicion in prosthetic valve endocarditis; leaves open effects on empiric therapy or outcomes.
Does the type of prosthetic valve affect the microbiological etiology in patients with prosthetic valve endocarditis?
The type of prosthetic heart valve is associated with the causative pathogen in prosthetic valve endocarditis, with mechanical valves having a significantly higher likelihood of S. aureus infection.
Berisha et al. (2022) studied this question. Mechanical prosthetic valves were significantly more likely to have endocarditis caused by Staphylococcus aureus compared to bioprosthetic valves (36% vs. 17%, p < 0.001).
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