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Valve Sparing vs Composite Valve Graft Root Replacement: Propensity Score-Matched Analysis.

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  • 1Department of Cardiothoracic Surgery, Weill Cornell Medicine, New York, New York; Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.

The Annals of Thoracic Surgery
|August 4, 2023
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Summary

Valve-sparing root replacement and composite valve graft (CVG) offer excellent outcomes for aortic root replacement. While valve sparing has a higher risk of aortic insufficiency, neither approach shows a difference in reoperations.

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Area of Science:

  • Cardiovascular Surgery
  • Thoracic Surgery
  • Aortic Surgery

Background:

  • Aortic root replacement is a critical procedure for various aortic conditions.
  • Both valve-sparing root replacement (VSRR) and composite valve graft (CVG) are established surgical options.
  • Comparing the long-term durability and outcomes of VSRR versus CVG is essential for patient management.

Purpose of the Study:

  • To compare the clinical outcomes and aortic valve durability between valve-sparing root replacement and composite valve graft procedures.
  • To evaluate the incidence of reoperation and aortic insufficiency in patients undergoing these aortic root replacement techniques.

Main Methods:

  • A retrospective analysis of 1635 patients undergoing primary aortic root replacement without acute dissection between 1997 and 2022.
  • Patients were divided into two groups: valve-sparing root replacement (473 patients) and composite valve graft (1162 patients).
  • Propensity score matching was employed to create comparable cohorts and reduce baseline confounding factors.

Main Results:

  • The composite valve graft group was older and had more comorbidities compared to the valve-sparing group.
  • Operative mortality was low in both groups (0.4% overall, 0% in valve-sparing). Major postoperative complications were slightly higher in the valve-sparing group (3.6% vs 1.1%).
  • At 10 years, survival and reoperation rates were similar between the two techniques. However, recurrent moderate-to-severe aortic insufficiency was significantly less prevalent in the CVG group (6.1% vs 11.1%).

Conclusions:

  • Both valve-sparing root replacement and composite valve graft procedures demonstrate excellent early and late outcomes up to 10 years.
  • Valve-sparing root replacement is associated with an increased risk of developing aortic insufficiency.
  • Despite the higher risk of insufficiency, valve-sparing root replacement does not lead to a difference in reoperation rates compared to CVG.