Surgical Treatment in Patients With Aortic Regurgitation Due to Takayasu Arteritis

Abstract

Aortic regurgitation is a common complication in patients with Takayasu arteritis. Severe aortic regurgitation requires surgical treatment. We investigated the outcomes of aortic valve replacement (AVR) and composite graft replacement (CGR) in patients with Takayasu arteritis and aortic regurgitation. We retrospectively reviewed the data from 41 patients with Takayasu arteritis and aortic regurgitation treated by AVR (n= 23) and CGR (n= 18) from January 1992 to December2016. The mean age at operation was 40.3 years, and 61.0% were women. Concurrent procedures were performed in 43.9% of patients. The preoperative aortic root diameter in the AVR and CGR groups was 41.5 ± 7.9 and 47.8 ± 9.5 mm, respectively. The cardiopulmonary bypass time was longer in the CGR group (140.2 ± 44.8 minutes) than in the AVR group (105.2 ± 32.5 minutes). No in-hospital death occurred. During a median follow-up of 6.6 years (interquartile range, 0.6-9.4) we observed 10 patients with composite adverse events in the AVR group (1 death, 3 reoperations, 3 residual ascending aorta aneurysms, 6 paravalvular leaks, and 1 valve detachment) and 2 composite events in the CGR group (2 deaths and 1 paravalvular leak). The unadjusted 5-year event-free rate was 55.8% and 91.7% in the AVR and CGR groups, respectively (log-rank P < .05). CGR was associated with nominally lower events on adjusted analysis (hazard ratio, 4.212; 95% confidence interval [0.910, 19.509]; P= .066). Paravalvular leak was the main postoperative complication. CGR was associated with nominally fewer adverse events.