Table 2

Coronary Hemodynamic Data

Transmural MI (n = 8)Nontransmural MI (n = 19)p Value
Heart rate, beats/min77 ± 773 ± 70.19
CFR1.14 ± 0.191.75 ± 0.480.002
b-APV, cm/s20 ± 522 ± 80.52
h-APV, cm/s23 ± 638 ± 140.0078
DDT, ms336 ± 162632 ± 2440.0044
FFR0.89 ± 0.090.89 ± 0.121.00
b-Pa, mm Hg89 ± 1182 ± 170.30
h-Pd, mm Hg79 ± 1374 ± 210.54
MVRI, mm Hg·cm-1·s3.70 ± 0.982.17 ± 0.840.0004
Pzf, mm Hg49.2 ± 11.7 (n = 5)31.9 ± 9.3 (n = 15)0.0033

Values are mean ± SD.

APV = average peak flow velocity; b = baseline; CFR = coronary flow reserve; DDT = diastolic decelaration time; h = hyperemia; FFR = fractional flow reserve; MI = myocardial infarction; MVRI = microvascular resistance index; Pa = mean aortic pressure; Pd = mean distal pressure; Pzf = zero flow pressure.