Table 3: Hemodynamic and lesion factors for iFR and FFR in the concordant and discordant groups.

iFR ≤0.89
FFR >0.8
Discordance
(n = 42)
iFR ≤0.89
FFR ≤0.8
Both positive
(n = 139)
iFR >0.89
FFR >0.8
Both negative
(n = 85)
iFR >0.89
FFR ≤0.8
Discordance
(n = 38)
p-value

Systolic blood pressure, mmHg129 ± 22.3126 ± 23.4124 ± 26.2122 ± 22.50.52
Diastolic blood pressure, mmHg62.2 ± 9.660.5 ± 13.163.6 ± 14.365.0 ± 13.90.17
Heart rate, beat/min75.9 ± 14.672.9 ± 11.769.1 ± 11.967.1 ± 11.70.002
Rate-pressure product9822 ± 26609186 ± 23678604 ± 23118166 ± 20620.001
CVP, mmHg7.2 ± 2.66.6 ± 3.16.4 ± 3.16.9 ± 3.20.5
PAWP, mmHg13.4 ± 4.413.2 ± 5.912.3 ± 4.912.0 ± 4.70.37
Cardiac index, L/min/m23.4 ± 0.93.4 ± 1.23.1 ± 0.92.9 ± 0.60.01
RV5 + SV1, mV3.1 ± 1.22.9 ± 1.32.7 ± 1.52.5 ± 1.80.27
Lesion location
 LAD, n (%)21 (50.0)99 (71.2)24 (28.2)22 (57.9)<.0001
 Proximal lesion14 (33.3)62 (44.6)31 (36.5)17 (44.7)0.44
 Tandem/diffuse lesion10 (23.8)51 (36.7)18 (21.2)9 (23.7)0.055
Diameter stenosis, %59.5 ± 18.365.3 ± 17.858.2 ± 16.665.4 ± 17.3 0.01
Reference diameter, mm2.71 ± 0.412.62 ± 0.442.9 ± 0.552.7 ± 0.640.001
Lesion length, mm16.2 ± 5.220.4 ± 8.414.9 ± 4.818.6 ± 5.5<.0001

iFR, instantaneous wave-free ratio; FFR, fractional flow reserve; CVP, central vein pressure; PAWP, pulmonary artery wedge pressure; LAD, left anterior descending artery.
Data are expressed as number (percentage) or mean ± SD.