Skip to main content

Table 2 Pressures (mmHg) at proximal and distal site at rest and hyperemia, and indices obtained from eleven coronary vessels in this study

From: The reasons why fractional flow reserve and instantaneous wave-free ratio are similar using wave separation analysis

Patients Vessels FFR iFR Pa Pd Pa Pd Pfor (distal) Pback (distal) Pfor (distal) Pback (distal) Reconstructed FFR Reconstructed iFR
Resting Hyperemia Resting Hyperemia
1 LAD 0.75 0.92 74.9 69.1 63.4 49.8 48.1 21 40.2 9.6 0.75 0.89
2 LAD 0.8 0.94 88.1 83.1 77.7 63.8 57.8 25.3 57.1 6.7 0.80 0.92
3 LAD 0.85 0.89 120.4 113.8 103.6 93.3 80.8 33 78.2 15.1 0.88 0.93
4 LAD 0.87 0.97 126.6 119.3 106.9 96.1 73.5 45.8 68.5 27.6 0.86 0.91
4 LCx 0.96 1.04 119.8 119.8 109.5 106.8 84.9 37.9 90 16.9 0.97 1.00
4 RCA 0.96 1.07 123.4 128.3 94.7 107.1 88.6 39.7 79.3 27.8 0.97 1.06
5 Ramus 0.94 0.99 102.5 101.3 109.5 90.8 60.2 40.1 70.3 20.5 0.95 0.98
6 LAD 0.73 0.82 109.7 96.0 100.8 80.2 70.3 25.7 68.6 11.6 0.70 0.84
7 LAD 0.8 0.98 108.8 104.5 80.9 87.2 62.4 42.1 59.2 28 0.81 0.94
8 LAD 0.66 0.74 88.1 67.6 80.9 57.4 39.6 28 45.2 12.2 0.66 0.66
9 LAD 0.89 1.07 105.7 108.3 98.8 90.3 63.7 44.6 75.1 15.2 0.90 1.04
  1. FFR, fractional flow reserve; iFR, instantaneous wave-free ratio; Pa, coronary aortic pressure; Pd, coronary distal pressure; Pback, backward pressure; Pfor, forward pressure