Key result
Preoperative MDCT predicts sutureless aortic valve size more accurately than echocardiography at ~70%.
Why the study?
Correct sizing of sutureless aortic valve prostheses is crucial and challenging in minimally invasive approaches, and the accuracy of preoperative MDCT for predicting prosthesis size needed evaluation.
Does contrast-enhanced MDCT improve the accuracy of predicting sutureless aortic valve prosthesis size compared to echocardiography in patients undergoing aortic valve replacement?
Population
54 patients undergoing aortic valve replacement with Sorin Perceval S prosthesis via right anterior minithoracotomy
Comparison
Preoperative contrast-enhanced MDCT measurements vs Doppler echocardiography measurements for valve sizing
Design
Observational single-blind study with MDCT operator blinded to implanted valve size
Authors
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MDCT annular measurements may enhance sizing accuracy for sutureless valves; extends echocardiographic comparisons but leaves open clinical outcome benefits.
Observational (n=54)
Single-blind
Does contrast-enhanced MDCT improve the accuracy of predicting sutureless aortic valve prosthesis size compared to echocardiography in patients undergoing aortic valve replacement?
Absolute Event Rate: 70.37% vs 53.7%
Preoperative contrast-enhanced MDCT provides higher predictive accuracy for sutureless aortic valve prosthesis sizing compared to echocardiography, which can be further improved using classification tree models.
Margaryan et al. (2015) conducted an observational in Aortic valve disease requiring replacement (n=54). Multidetector-row computed tomography (MDCT) vs. Doppler echocardiography was evaluated on Accuracy to predict the implanted sutureless valve size. Contrast-enhanced MDCT predicted sutureless aortic valve size with 70.37% accuracy using annular surface area, outperforming echocardiographic annulus measurement (53.7%).
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