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  • Agreement Between iFR and Other Non-Hyperaemic Pressure Ratios in Severe Aortic Stenosis



    Instantaneous wave-free ratio (iFR) can reliably assess the physiological significance of coronary artery disease (CAD). Previous studies have demonstrated its interchangeability with other non-hyperaemic pressure ratios (NHPR), but there is no data exploring whether this association is maintained in patients with severe aortic stenosis (AS).

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