Hemodynamic diagnostics of epicardial coronary stenoses: in-vitro experimental and computational study

Table 2 Mean Pressure drop and mean pressure recovery values before and during guidewire insertion

	Before guidewire insertion
% area stenosis	Flow (Q)	pressure drop ( $Δ \tilde{p}$ )	pressure recovery ( $Δ {\tilde{p}}_{r}$ )	Pressure recovery coefficient (CPR)	Pressure recovery factor (η)	CDP_e	Re_e
65% area (moderate) stenosis	57	1.32	0.26	0.42	0.48	17	125
	136	5.77	1.67	0.48	0.55	13	298
	189	9.80	3.50	0.52	0.59	11	414
80% area (intermediate) stenosis	54	6.29	0.80	0.45	0.47	89	122
	82	12.46	2.10	0.52	0.54	77	195
	132	27.97	4.66	0.46	0.48	68	294
89% area (severe) stenosis	44	10.17	1.80	0.46	0.47	215	99
	74	24.79	4.04	0.38	0.38	190	164
	93	37.85	6.05	0.36	0.36	184	207
	During guidewire insertion
% area stenosis	Flow (Q)	pressure drop ( $Δ \tilde{p}$ )	pressure recovery ( $Δ {\tilde{p}}_{r}$ )	Pressure recovery coefficient (CPR)	Pressure recovery factor (η)	CDP_e	Re_e
65% area (moderate) stenosis	54	1.62	0.05	0.09	0.11	22	109
	132	7.29	1.25	0.35	0.41	17	262
	184	12.41	2.76	0.39	0.45	15	367
80% area (intermediate) stenosis	51	7.93	0.62	0.35	0.36	125	101
	75	15.07	1.35	0.35	0.36	109	151
	121	32.18	4.07	0.41	0.42	90	244
89% area (severe) stenosis	34	10.90	1.41	0.46	0.46	372	68
	61	26.76	3.57	0.37	0.37	291	122
	81	39.44	5.06	0.30	0.31	247	161

ISSN: 1475-925X