Transcatheter Aortic Valve Replacement in Hypertrophic Cardiomyopathy: A Systematic Review and Meta-Analysis.

Catheter Cardiovasc Interv

Division of Cardiovascular Diseases, Bridgeport Hospital, Yale New Haven Health, Bridgeport, Connecticut, USA.

Published: January 2025

Background: The co-existence of severe aortic stenosis (AS) and hypertrophic cardiomyopathy (HCM) is not uncommon. Surgical intervention is the gold standard management. Patients with high surgical risk might undergo transcatheter aortic valve replacement (TAVR). However, TAVR outcomes are unclear in this population. We aimed to investigate the impact of HCM on the outcomes of TAVR.

Aim: We aim to investigate the outcomes of TAVR in patients with HCM.

Methods: We systematically searched PubMed, EMBASE, and Scopus for studies that compared outcomes of TAVR procedure between patients with HCM and those without it. Using the random-effects model, the odds ratios (OR) with 95% confidence interval (CI) were reported.

Results: We screened 102 articles and identified three observational cohort studies. Compared to patients who underwent TAVR without underlying HCM, TAVR for AS co-existed with HCM was associated with higher rates of mortality (OR 5.79; 95% CI: 3.38; 9.91, p < 0.0001), cardiogenic shock (OR 4.55; 95% CI: 3.40; 6.08, p < 0.0001), aortic dissection (OR 4.95; 95% CI: 3.17; 7.74, p < 0.0001), vascular complications (OR 2.10; 95% CI: 1.27; 3.47, p = 0.004), and renal impairment (OR 1.80; 95% CI: 1.36; 2.40, p < 0.0001). There was no difference between the comparison groups in terms of complete heart block, new permanent pacemaker implantation, or bleeding.

Conclusion: In patients with severe AS and HCM, TAVR was associated with significantly higher occurrence of mortality, cardiogenic shock, aortic dissection, vascular complications, and renal impairment as well as the need for mechanical ventilation than patients who did not have HCM.

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http://dx.doi.org/10.1002/ccd.31367DOI Listing

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