Response by Redfors and Généreux to Letter Regarding Article, “Stress Testing in Asymptomatic Aortic Stenosis”
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We appreciate the comments by Tzanis et al on our recent review of the role of stress testing in aortic stenosis (AS).1 We agree fully with the authors that cardiopulmonary exercise testing (CPET) can have a role in the diagnostic workup of patients with severe AS who do not report unequivocal symptoms. As we discussed in greater detail in the article, symptoms are inherently subjective, even when reported during an exercise test, and there is no clear consensus on exactly what constitutes an abnormal exercise test. CPET, like exercise echocardiography, can provide objective performance indexes. Unlike exercise echocardiography, CPET provides information on the overall performance of the cardiopulmonary …