Infective Endocarditis Rates Post-TAVR Significantly Lower Than SAVR
A recent study reveals that infective endocarditis occurs less frequently after transcatheter aortic valve replacement compared to surgical methods.
Infective endocarditis incidence is 2.63% after TAVR versus 5.37% after SAVR.
Older patients undergoing TAVR show higher overall mortality rates.
Effective infection prevention remains crucial despite lower endocarditis rates post-TAVR.
A recent analysis of US electronic health records has shown that the occurrence of infective endocarditis (IE) following transcatheter aortic valve replacement (TAVR) is significantly lower than that observed after surgical aortic valve replacement (SAVR). The findings, presented at IDWeek 2026, provide substantial data to a previously debated topic in cardiology.
The study examined a total of 373,946 aortic valve replacement procedures conducted between January 1, 2018, and December 31, 2025. Of these, 262,465 were TAVR procedures, while 111,481 were SAVR. Researchers utilized ICD-10 codes to identify cases of endocarditis, categorizing them into early (within three months post-procedure) and late (beyond three months). Overall, 3.44% of patients developed IE, with TAVR showing a significantly lower incidence of 2.63% compared to 5.37% for SAVR, marking a 51% reduction in risk.
The study also highlighted the pathogen profile associated with infective endocarditis. Staphylococcus aureus was identified as the most prevalent pathogen in both groups, occurring less frequently after TAVR (29.7%) compared to SAVR (36.1%). Enterococcus faecalis was the second most common organism, detected in 20.3% of TAVR cases and 15.7% of SAVR cases. Notably, women constituted a larger percentage of IE cases after TAVR (41.3%) compared to SAVR (28.0%).
Demographically, TAVR recipients were older, with 40.3% aged 80 or above, compared to only 5.9% of SAVR recipients. This age disparity contributed to a higher 12-month mortality rate among TAVR patients (7.15%) versus those undergoing SAVR (5.05%). However, among patients who developed IE, mortality rates were similar across both groups, indicating that once endocarditis occurred, survival outcomes did not significantly differ.
These findings underscore the importance of continued vigilance in infection prevention strategies following valve replacement procedures. While the lower incidence of infective endocarditis after TAVR is promising, it does not eliminate the associated risks, emphasizing the need for effective post-operative care regardless of the surgical approach taken.
