Management of the dissected aortic root in young patients: A propensity score-matched analysis of mechanical versus bioprosthetic aortic root replacement

Figures

• 

  Increased risk of morbidity in mechanical root replacement for type A dissection.

• 

  Figure 1. Graphical abstract.

• 

  Figure 2. Breakdown of procedure type (ie, mechanical Bentall vs bioprosthetic Bentall), by year.

• 

  Figure 3. Breakdown of procedure type (ie, mechanical Bentall vs bioprosthetic Bentall), by age group.

• 

  Figure 4. 10-year Kaplan-Meier (KM) analysis of (A) survival and (B) composite end point in patients aged 65 years or younger undergoing mechanical Bentall versus bioprosthetic Bentall for acute type A aortic dissection (95% CI).

• 

  Figure 5. Propensity score-matched 10-year Kaplan-Meier (KM) analysis of survival and composite end point in patients aged 65 years and younger undergoing mechanical Bentall versus bioprosthetic Bentall for acute type A aortic dissection (95% CI).

• 

  Figure E1. Secondary propensity score-matching technique was performed, including all variables utilized in the primary matched cohort described in the article, with the addition of year of surgery to the propensity score model to control for potential changes in practice and technique throughout the 20-year study period. Despite a reduction in sample size in these matched cohorts, Kaplan-Meier (KM) survival analysis demonstrated a nonstatistically significant reduction in long-term survival associated with mechanical Bentall versus bioprosthetic Bentall (P = .050; 95% CI) (A), and a statistically significant reduction in freedom from the composite end point associated with mechanical Bentall versus bioprosthetic Bentall (P = .015; 95% CI) (B).

• 

  Figure E2. Kaplan-Meier (KM) survival analysis of the individual components of the composite secondary end point, including freedom from stroke (95% CI) (A), major bleeding event (95% CI) (B), and reoperation at the level of the aortic valve or root (95% CI) (C); entire sample included. Note that competing risk of mortality is not accounted for in these curves.