Doppler flow morphology characteristics of epiaortic arteries in aortic valve pathologies: a retrospective study on a cohort of patients with ischemic stroke

The Ultrasound Journal

Table 4 nvUS flow characteristics ‘no AR’ compared to at least ‘moderate AR’

Flow characteristic	No AR (n, %) N = 838	Moderate or severe AR (n, %) N = 100	P value	Sensitivity (%)	Specificity (%)	PPV (%)	NPV (%)
Bisferious pulse CCA	5 (0.6)	22 (22)	< 0.001	22	99.4	81.5	91.4
Bisferious pulse ICA	2 (0.2)	19 (19)	< 0.001	19	99.8	90.5	91.2
Bisferious pulse CCA + ICA	0 (0)	6 (6)	< 0.001	6	100	100	89.9
Zero diastole CCA	1 (0.1)	7 (7)	< 0.001	7	99.9	87.5	90
Zero diastole ICA	0 (0)	1 (1)	0.107	1	100	100	89.4
Zero diastole CCA + ICA	0 (0)	1(1)	0.107	1	100	100	89.4
Diastolic reversal CCA	2 (0.2)	14 (14)	< 0.001	14	99.8	87.5	90.7
Diastolic reversal ICA	1 (0.1)	9 (9)	< 0.001	9	99.9	90	90.2
Diastolic reversal CCA + ICA	0 (0)	4 (4)	< 0.001	4	100	100	89.7
No dicrotic notch CCA	1 (0.1)	31 (31)	< 0.001	31	99.9	98.7	93.4
No dicrotic notch ICA	0 (0)	11 (11)	< 0.001	11	100	100	90.4
No dicrotic notch CCA + ICA	0 (0)	7 (7)	< 0.001	7	100	100	90

Statistical analysis was performed using Chi-square test, Fisher’s exact test and fourfold table
n number of patient in each group, % percentage of patients in relation to number of patients in each group, AR aortic valve regurgitation, CCA common carotid artery, ICA internal carotid artery, ECA external carotid artery