Namasivayam, Mayooran and Churchill, Timothy W. and Capoulade, Romain and Pibarot, Philippe and Danik, Jacqueline S. and Picard, Michael H. and Levine, Robert A. and Hung, Judy (2024) Combined Value of Dimensionless Index and Transvalvular Flow Rate in Risk Stratification of Aortic Stenosis. The American Journal of Cardiology, 213. pp.69-71. ISSN 00029149
Full text not available from this repository.Abstract
Aortic stenosis (AS) is difficult to phenotype. The metrics of severity are frequently discordant, making prognostication challenging. Flow state is central to accurately determining severity. We sought to evaluate the prognostic value of dimensionless index (DI) and transvalvular flow rate (Q) in AS. We evaluated 2 independent, longitudinal registries of >/= moderate severity AS (aortic valve area </=1.5 cm(2) or mean gradient >/=20 mm Hg) with complete data follow-up. In the primary cohort (n = 1,104, 77 +/- 11 years, 40% female), the DI and Q category significantly predicted mortality (p <0.001) (Figure 1), with the highest risk being low DI and low Q (DI <0.25, Q </=210 mL/s). In the validation cohort (n = 939, 70 +/- 13 years, 42% female), similar results were seen in Kaplan-Meier (p <0.001) and multivariable Cox model analyses (p <0.01). We advocate for wider combined use of DI and Q in AS assessment to augment current diagnostic and prognostic approaches.
| Item Type: | Article |
|---|---|
| Subjects: | R Medicine > R Medicine (General) |
| Depositing User: | Repository Administrator |
| Date Deposited: | 14 Dec 2024 23:44 |
| Last Modified: | 14 Dec 2024 23:44 |
| URI: | https://eprints.victorchang.edu.au/id/eprint/1518 |
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