Background: Aortic valve (AV) repair (AVr) using a central coaptation stitch or bioprosthetic AV replacement (AVR) are most commonly performed at the time of durable left ventricular assist device implant to address AV insufficiency (AI).
Methods: Prospective data collection on 46 patients undergoing left ventricular assist device implant from 2007 through 2018 who received concomitant AVr (n = 40) or AVR (n = 6) was retrospectively analyzed to assess freedom from recurrent aortic insufficiency. Paired Wilcoxon rank-sum test was used to compare echocardiographic findings. Mantel-Cox statistics were used to analyze survival.
Results: For AVr, central coaptation led to a mean decrease in AI severity by 2.1 ± 1.0 grades (P < .001). Three patients (7.5%) had recurrence of at least moderate AI by 3 years. In comparison, all patients in the AVR group had mild or less AI on subsequent follow-up. Success of AVr in downgrading AI severity was associated with a smaller aortic root diameter (P = .011) and sinotubular junction diameter (P = .003). An aortic root diameter greater than 3.5 cm was predictive of less improvement in AI severity compared with 3.5 cm or less (1.83 ± 1.03 versus 2.47 ± 0.80 grades of improvement; P = .038). Duration of cardiopulmonary bypass was 32 minutes longer and duration of aortic cross-clamp was 38 minutes longer for AVR versus AVr cohorts. No difference in 30-day (P = .418) or overall survival (P = .572) between the AVr and AVR groups was seen.
Conclusions: Aortic valve repair for addressing AI has a recurrence rate of 7.5% at 3 years. Success in downgrading AI is more likely with a smaller aortic root. No difference in survival was observed between AVr and AVR.
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| http://dx.doi.org/10.1016/j.athoracsur.2020.01.015 | DOI Listing |
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