Comparative assessment of coronary physiology using transthoracic pulsed-wave Doppler and myocardial contrast echocardiography in rats

European Radiology Experimental

Table 2 Pulsed-wave Doppler-derived blood flow values from the proximal left coronary artery of eight rats

	Baseline		Adenosine			Dobutamine			p value²	η²
	Mean	SD	Mean	SD	p value¹	Mean	SD	p value¹	p value²	η²
DPV (mm/s)	528	110	839	342	0.001	1093	302	0.001	0.005	0.58
SPV (mm/s)	169	41	265	115	0.001	274	91	0.001	0.829	0.32
MV (mm/s)	247	55	346	129	0.001	479	165	0.001	0.002	0.44
VTI (mm)	30	7	40	13	0.001	47	17	0.001	0.092	0.29
VTI_sys (mm)	8	3	11	5	0.002	10	3	0.008	0.330	0.17
VTI_dia (mm)	22	6	29	10	0.011	38	16	0.001	0.014	0.26
VTI * HR (mm/min)	10,342	2,647	12,899	4,935	0.004	19,058	6,691	0.001	0.002	0.37
SPV/DPV	0.33	0.06	0.33	0.09	0.814	0.26	0.07	0.003	0.003	0.16
CFVR			1.56	0.48		2.11	0.56		0.001

CFVR Coronary flow velocity reserve, DPV Diastolic peak velocity, MV Mean velocity, p value¹ Adenosine or dobutamine versus baseline parameters, p value² Adenosine versus dobutamine, SD Standard deviation, SPV Systolic peak velocity, VTI Velocity time integral, VTI_dia Diastolic velocity time integral, VTI_sys Systolic velocity time integral, VTI*HR Velocity time integral * heart rate, η² Effect size