1. Myocardial extracellular volume quantification by computed tomography predicts outcomes in patients with severe aortic stenosis.
- Author
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Yoav Hammer, Yeela Talmor-Barkan, Aryeh Abelow, Katia Orvin, Yaron Aviv, Noam Bar, Amos Levi, Uri Landes, Gideon Shafir, Alon Barsheshet, Hana Vaknin-Assa, Alexander Sagie, Ran Kornowski, and Ashraf Hamdan
- Subjects
Medicine ,Science - Abstract
BackgroundThe extent of myocardial fibrosis in patients with severe aortic stenosis might have an important prognostic value. Non-invasive imaging to quantify myocardial fibrosis by measuring extracellular volume fraction might have an important clinical utility prior to aortic valve intervention.MethodsSeventy-five consecutive patients with severe aortic stenosis, and 19 normal subjects were prospectively recruited and underwent pre- and post-contrast computed tomography for estimating myocardial extracellular volume fraction. Serum level of galectin-3 was measured and 2-dimensional echocardiography was performed to characterize the extent of cardiac damage using a recently published aortic stenosis staging classification.ResultsExtracellular volume fraction was higher in patients with aortic stenosis compared to normal subjects (40.0±11% vs. 21.6±5.6%; respectively, pConclusionIn patients with severe aortic stenosis undergoing computed tomography before aortic valve intervention, quantification of extracellular volume fraction correlated with functional status and markers of left ventricular decompensation, and predicted the 12-months composite adverse clinical outcomes. Implementation of this novel technique might aid in the risk stratification process before aortic valve interventions.
- Published
- 2021
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