Rate Pressure Products Affect the Relationship between the Fractional Flow Reserve and Instantaneous Wave-Free Ratio

Figure 5

The best cutoff value of rate pressure products to predict discordance of the iFR ≤ 0.89 and FFR > 0.8 (a) and discordance of the iFR > 0.89 and FFR ≤ 0.8 (b). RPP, rate pressure products; iFR, instantaneous wave-free ratio; FFR, fractional flow reserve.

(a)

(b)