Table 4

Summary of Coronary Hemodynamic Variables at Rest and During Hyperemia Before and After Transcatheter Aortic Valve Replacement

RestingHyperemia
Pre-TAVRPost-TAVRp ValuePre-TAVRPost-TAVRp Value
Whole-cycle variables
 Flow velocity (cm/s)22.13 ± 10.324.84 ± 12.50.1033.44 ± 13.440.33 ± 17.40.004
 Microvascular resistance (mm Hg · cm · s−1)4.20 ± 1.94.14 ± 2.10.812.42 ± 0.92.14 ± 0.90.03
 Aortic pressure (mm Hg)85.85 ± 18.992.40 ± 18590.0482.99 ± 18.088.44 ± 17.10.13
Systolic variables
 Flow velocity (cm/s)16.48 ± 9.421.05 ± 13.10.00427.67 ± 12.134.15 ± 17.50.01
 Microvascular resistance (mm Hg · cm · s−1)7.54 ± 3.86.60 ± 3.50.173.73 ± 1.63.45 ± 1.50.12
 Aortic pressure (mm Hg)101.46 ± 22.4112.11 ± 24.0.0298.87 ± 22.7110.55 ± 20.70.008
Wave-free variables
 Flow velocity (cm/s)29.78 ± 14.930.81 ± 19.60.3144.01 ± 20.642.52 ± 18.40.87
 Microvascular resistance (mm Hg · cm · s−1)2.59 ± 1.53.02 ± 1.60.021.53 ± 0.81.49 ± 0.60.52
 Aortic pressure (mm Hg)73.05 ± 15.176.41 ± 16.80.1770.13 ± 16.370.69 ± 15.00.64
Diastolic variables
 Flow velocity (cm/s)31.67 ± 15.433.33 ± 18.60.3646.03 ± 20.545.94 ± 18.10.92
 Microvascular resistance (mm Hg · cm · s−1)2.65 ± 1.52.62 ± 1.30.921.50 ± 0.81.47 ± 0.60.63
 Aortic pressure (mm Hg)76.76 ± 16.678.13 ± 17.00.3371.69 ± 14.974.02 ± 15.30.34

Values are mean ± SD.

TAVR = transcatheter aortic valve replacement.

  • Statistically significant (p < 0.05).