From: Hemodynamic diagnostics of epicardial coronary stenoses: in-vitro experimental and computational study
Stenosis
Coronary flow reserve (CFR)
Proximal pressure ( p ˜ a MathType@MTEF@5@5@+=feaagaart1ev2aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacPC6xNi=xH8viVGI8Gi=hEeeu0xXdbba9frFj0xb9qqpG0dXdb9aspeI8k8fiI+fsY=rqGqVepae9pg0db9vqaiVgFr0xfr=xfr=xc9adbaqaaeGaciGaaiaabeqaaeqabiWaaaGcbaGafmiCaaNbaGaadaWgaaWcbaGaemyyaegabeaaaaa@2EC4@ ) mmHg
Hyperemic trans-stenotic pressure drop ( Δ p ˜ = p ˜ r h − p ˜ a MathType@MTEF@5@5@+=feaagaart1ev2aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacPC6xNi=xH8viVGI8Gi=hEeeu0xXdbba9frFj0xb9qqpG0dXdb9aspeI8k8fiI+fsY=rqGqVepae9pg0db9vqaiVgFr0xfr=xfr=xc9adbaqaaeGaciGaaiaabeqaaeqabiWaaaGcbaGaeuiLdqKafmiCaaNbaGaacqGH9aqpcuWGWbaCgaacamaaBaaaleaacqWGYbGCcqWGObaAaeqaaOGaeyOeI0IafmiCaaNbaGaadaWgaaWcbaGaemyyaegabeaaaaa@3809@ ) mmHg
Hyperemic distal recovered pressure ( Q ˜ h MathType@MTEF@5@5@+=feaagaart1ev2aaatCvAUfKttLearuWrP9MDH5MBPbIqV92AaeXatLxBI9gBaebbnrfifHhDYfgasaacPC6xNi=xH8viVGI8Gi=hEeeu0xXdbba9frFj0xb9qqpG0dXdb9aspeI8k8fiI+fsY=rqGqVepae9pg0db9vqaiVgFr0xfr=xfr=xc9adbaqaaeGaciGaaiaabeqaaeqabiWaaaGcbaGafmyuaeLbaGaadaWgaaWcbaGaemiAaGgabeaaaaa@2E94@ ) mmHg
Fractional flow reserve (FFR)
Moderate [13]
3.6 ± 0.3
84 ± 3
7.4
75.2
0.89
Intermediate [16]
3.3
86
14.3
70.4
0.82
Severe [13, 28]
2.3 ± 0.1
89 ± 3
34
55
0.62