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The Ultrasound Journal

Table 6 nvUS flow characteristics in patients with ‘no AS’ compared to at least ‘moderate AS’

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

Flow characteristic

No AS (n, %) N = 1245

Moderate or severe AS (n, %) N = 61

P value

Sensitivity (%)

Specificity (%)

PPV (%)

NPV (%)

Pulsus tardus et parvus CCA

3 (0.2)

56 (91.8)

 < 0.001

91.8

99.8

94.9

99.6

Pulsus tardus et parvus ICA

0 (0)

51 (83.6)

 < 0.001

83.6

100

100

99.2

Pulsus tardus et parvus CCA + ICA

0 (0)

48 (78.7)

 < 0.001

78.8

100

100

98.9

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