AUTHOR=Koren Ofir , Patel Vivek , Naami Robert , Naami Edmund , Nagasaka Takashi , Shechter Alon , Natanzon Sharon Shalom , Kohan Siamak , Allison Zev , Lerner Addee , Cheng Daniel Eugene , Chakravarty Tarun , Nakamura Mamoo , Cheng Wen , Jilaihawi Hasan , Makkar Raj R. 

TITLE=New adverse coronary events in valve-in-valve TAVR and native TAVR—A 2-year matched cohort

JOURNAL=Frontiers in Cardiovascular Medicine

VOLUME=9

YEAR=2022

URL=https://www.frontiersin.org/journals/cardiovascular-medicine/articles/10.3389/fcvm.2022.1004103

DOI=10.3389/fcvm.2022.1004103

ISSN=2297-055X

ABSTRACT=<sec><title>Objective</title><p>To assess the incidence of new adverse coronary events (NACE) following transcatheter aortic valve replacement (TAVR) and valve-in-valve TAVR (ViV-TAVR).</p></sec><sec><title>Background</title><p>ViV-TAVR is an accepted treatment for degenerative prostheses among patients with high surgical-risk. TAVR studies have suggested an increased risk of coronary artery obstruction and flow stasis causing thrombus formation. Whether contemporary ViV-TAVR is associated with higher rate of coronary events compared to TAVR is unknown.</p></sec><sec><title>Methods</title><p>We used data from 1,224 TAVR patients between 2016 and 2021. We propensity-matched patients following ViV-TAVR and TAVR by significant predictors to overcome confounders in patients' baseline characteristics and procedural factors.</p></sec><sec><title>Results</title><p>The matched population included 129 patients in each group. In line with prior reports, there was a higher in-hospital coronary artery obstruction rate with ViV-TAVR (3.1 vs. 1.6%; <italic>p</italic> = 0.23). Despite this, 2-year cumulative NACE rates were similar between groups (4.7 vs. 6.2%, respectively, <italic>p</italic> = 0.79), with no difference between its components: myocardial infarction (MI) (<italic>p</italic> = 0.210), unplanned coronary catheterization (<italic>p</italic> = 0.477), or coronary artery bypass grafting (CABG) (<italic>p</italic> = 0.998). Moreover, hypoattenuated leaflets thickening (HALT) at 30-day CT was observed in nearly a quarter of the patients with no difference between groups (23.9 vs. 23.1%, HR 1.02, 95% CI 0.50–1.28, <italic>p</italic> = 0.872). The progression rate of the coronary artery calcium score (CACS), assessed in a third of patients, was similar between groups (p log-rank = 0.468, 95% CI 0.12–1.24). Low coronary artery height was an unfavorable predictor for in-hospital coronary obstruction and 2-year NACE rate (HR 1.20 and HR 1.25, <italic>p</italic> = 0.001 and <italic>p</italic> &lt; 0.0001, respectively).</p></sec><sec><title>Conclusion</title><p>At 2-year follow-up, ViV-TAVR was not associated with a higher rate of myocardial infarction, unplanned catheterization, coronary artery bypass grafting, or hypoattenuated leaflet thickening.</p></sec>