Two decades of valve-sparing root reimplantation in tricuspid aortic valve: impact of aortic regurgitation and cusp repair

OBJECTIVES: Our goal was to analyse the influence of preoperative aortic regurgitation (AR) on the necessity of cusp repair during valve-sparing reimplantation (VSR). We focused on patients with tricuspid aortic valves (TAV) and evaluated the impact of AR and cusp repair on long-term outcomes. METHODS: From March 1998 to December 2018, a total of 512 consecutive patients underwent VSR at our institution; of these, 303 had a TAV. The mean age was 53 +/- 15 years, and the median follow-up was 6.12 years. The rate and type of cusp repair were analysed based on preoperative AR. Time-to-event analysis was performed, as well as risk of death, reoperation and AR recurrence. RESULTS: Cusp repair was necessary in 168 (55.4%) patients; the rate rose significantly as AR grade increased (P < 0.001). In-hospital mortality was 1% (n = 3). At 5 and 10 years, overall survival was 92 +/- 2% and 75 +/- 5%, respectively. Freedom from valve reoperation was 95 +/- 2% and 90 +/- 3%. Freedom from AR >2+ and AR >1+ at 10 years was 88 +/- 4% and 70.4 +/- 4.6%, respectively. Independent predictors of death included age, New York Heart Association functional class and type-A aortic dissection. Predictors of AR greater than mild included previous cardiac surgery and severe preoperative AR. CONCLUSION: In patients with TAV receiving VSR, the necessity of cusp repair increased with the degree of preoperative AR. Preoperative AR and cusp repair do not impact long-term survival and aortic valve reoperation, but severe preoperative AR and multiple cusp repair increase the risk of recurrent moderate-to-severe AR. Overall, cusp repair seems to attenuate the negative impact of preoperative AR for at least 1 decade in a majority of patients.

Automated summary

The study examined the impact of preoperative aortic regurgitation on cusp repair necessity, finding that the repair rate increased with the severity of AR. While preoperative AR and cusp repair did not affect long-term survival and aortic valve reoperation, severe preoperative AR and multiple cusp repairs increased the risk of recurrent moderate-to-severe AR.