Key result
Higher effective height during valve-sparing root replacement was associated with a decreased incidence of 2+ or greater late postoperative aortic insufficiency.
Why the study?
The study evaluated how anatomic aortic root parameters during valve-sparing root replacement affect the risk of postoperative aortic insufficiency and need for aortic valve reoperation.
Does the effective height of leaflet coaptation during valve-sparing root replacement predict postoperative aortic insufficiency and the need for reoperation?
Cohort (n=177)
Does the effective height of leaflet coaptation during valve-sparing root replacement predict postoperative aortic insufficiency and the need for reoperation?
Achieving an effective height of at least 11 mm during valve-sparing root replacement is crucial to minimize the risk of significant late postoperative aortic insufficiency and the need for reoperation.
Answers are grounded in this paper and cite their sources.
Higher effective height may warrant consideration to reduce late aortic insufficiency risk; leaves open optimal thresholds and need for prospective validation.
BACKGROUND: This study evaluated the impact of anatomic aortic root parameters during valve-sparing root replacement on the probability of postoperative aortic insufficiency and freedom from aortic valve reoperation. METHODS: From 1995 to 2020, 177 patients underwent valve-sparing root replacement (163 reimplantations, 14 remodeling). Preoperative and postoperative echocardiograms were analyzed to measure annulus and sinus diameters, effective height of leaflet coaptation, and degree of aortic insufficiency. Logistic regression was used to evaluate predictors of 2+ or greater late postoperative aortic insufficiency. Fine-Gray regression determined predictors for aortic valve reintervention. RESULTS: The study population included 122 (69%) men with a mean age of 43 ± 15 years. A total of 119 patients (67%) had an identified connective tissue disorder. The cumulative incidence of aortic valve reoperation was estimated as 7% at 5 years and 12% at 10 years. The probability of 2+ or greater late postoperative aortic insufficiency was inversely related to effective height during valve-sparing root replacement (P = .018). As postoperative effective height fell below 11 mm, the probability of 2+ or greater aortic insufficiency exceeded 10%. On multivariable logistic regression, effective height (odds ratio, 0.53; 0.33-0.86; P = .010), preoperative annulus diameter (odds ratio, 1.44; 1.13-1.82; P = .003), and degree of preoperative aortic insufficiency (odds ratio, 2.57; 1.45-4.52; P = .001) were associated with increased incidence of 2+ or greater late postoperative aortic insufficiency. On multivariable Fine-Gray regression, risk factors for aortic valve reintervention included preoperative annulus diameter (subdistribution hazard ratio, 1.28 [1.03-1.59], P = .027), history of 3+ or greater aortic insufficiency (subdistribution hazard ratio, 4.28; 1.60-11.44; P = .004), and 2+ or greater early postoperative aortic insufficiency (subdistribution hazard ratio, 5.22; 2.29-11.90; P < .001). CONCLUSIONS: Measures to increase effective height during valve-sparing root replacement may decrease the risk of more than mild postoperative aortic insufficiency after repair and the need for aortic valve reoperation.
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Kachroo et al. (2022) conducted a cohort in Aortic root disease requiring valve-sparing root replacement (n=177). Aortic valve effective height was evaluated on 2+ or greater late postoperative aortic insufficiency (OR 0.53, 95% CI 0.33-0.86, p=0.010). Higher effective height during valve-sparing root replacement was associated with a decreased incidence of 2+ or greater late postoperative aortic insufficiency.
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