The instantaneous wave-free ratio is a drug-free index of stenosis severity comparable to fractional flow reserve (FFR).
Does the instantaneous wave-free ratio provide a drug-free index of stenosis severity comparable to FFR?
The instantaneous wave-free ratio offers a novel, adenosine-independent method to assess coronary stenosis severity that is comparable to FFR.
Absolute Event Rate: 0% vs 0%
Intracoronary resistance is naturally constant and minimized during the wave-free period. The instantaneous wave-free ratio calculated over this period produces a drug-free index of stenosis severity comparable to FFR. (Vasodilator Free Measure of Fractional Flow Reserve ADVISE; NCT01118481).
Sen et al. (Sat,) reported a other. The instantaneous wave-free ratio is a drug-free index of stenosis severity comparable to fractional flow reserve (FFR).