Objectives:
To describe the incidence, features, predisposing factors and outcomes of infective endocarditis (IE) following transcatheter valve implantation (TVI).
Background:
Very few data exist on IE following TVI.
Methods:
Studies published between 2000 and 2013 regarding IE in patients with aortic (TAVI) or pulmonary (TPVI) transcatheter valves were identified through systematic electronic search.
Result:
A total of 28 publications describing 60 patients (32 TAVI, 28 TPVI) were identified. Most TAVI patients (66% males, 80±7 years) had a very high-risk profile (LogEuroSCORE: 30.4±14.0%, p<0.001 compared to previous TAVI registries). In TPVI patients (90% males, 19±6 years), IE was more frequent in stenotic conduit/valve (61%) (p <0.001 vs. previous TPVI series). Median time between TVI and IE was 5.5 (2-12) months. Typical microorganisms were mostly found with a higher incidence of enterococci after TAVI (34.4% vs. 0%, p =0.009), and S.aureus after TPVI (29.4% vs. 6.2%, p =0.041). Up to 60% of the TAVI-IE patients were managed medically despite related complications such as local extension, embolism and/or heart failure in >50% of patients. Valve explantation rate was 57% and 23% in balloon- and self-expandable valves, respectively (p=0.07). In-hospital mortality for TAVI-IE was 34.4%. Most TPVI-IE patients (75%) were managed surgically, and in-hospital mortality was 7.1%.
Conclusions:
Most cases of IE post-TVI were males, with a very high-risk profile (TAVI) or underlying stenotic conduit/valve (TPVI). Typical -but different- microorganisms of IE were involved in half of the TAVI and TPVI cases. Most TPVI-IE patients were managed surgically as opposed to TAVI patients, and mortality rate was high in both cohorts.
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