Nationally Representative Repeat Transcatheter Aortic Valve Replacement Outcomes: Report From the Centers for Medicare and Medicaid Services.

OBJECTIVES

The aim of this study was to examine real-world experience with repeat transcatheter aortic valve replacement (TAVR) in a population-based national database.

BACKGROUND

Repeat TAVR is a growing option in patients requiring reintervention for TAVR. However, large-scale studies with longitudinal follow-up are limited.

METHODS

All Medicare beneficiaries who underwent TAVR from 2012 to 2017 were included. Outcomes included 30-day and longitudinal mortality and major adverse cardiovascular events, defined as death, stroke, pacemaker insertion, major bleeding, acute kidney injury, or cardiac arrest. Outcomes of repeat TAVR were compared with surgical explantation after TAVR (TAVR explantation) in a matched analysis.

RESULTS

Of 133,250 patients who underwent TAVR, 617 (0.46%) underwent subsequent repeat TAVR at a median interval of 154 days (interquartile range: 58-537 days). Mortality at 30 days and 1 year was 6.0% and 22.0%, respectively. Rates of 30-day stroke and pacemaker insertion were 1.8% and 4.2%. Mortality at 30 days was lower in those who underwent their first TAVR during the later era (2015-2017) compared with earlier years (2012-2014) (4.6% vs 8.7%; P = 0.049). Repeat TAVR was associated with lower 30-day mortality compared with a matched group undergoing TAVR explantation (6.2% vs 12.3%; P = 0.05), although 1-year mortality was similar (21.0% vs 20.8%; P = 1.000). The incidence of 30-day major adverse cardiovascular events was higher with TAVR explantation compared with repeat TAVR (risk ratio: 2.92; 95% CI: 1.88-4.99; P ≤ 0.001).

CONCLUSIONS

Repeat TAVR was performed with acceptable 30-day mortality in this high-risk population. Short-term outcomes were superior to surgical explantation, but 1-year outcomes were similar. Repeat TAVR will likely be an important option for aortic valve reintervention after TAVR.