Cardiovascular Ultrasound

Table 2 Heart rate, brachial artery diameters, post-occlusion shear rate area under the curve, and post-occlusion time-to-peak

From: Brachial Artery Flow-mediated Dilation Following Exercise with Augmented Oscillatory and Retrograde Shear Rate

	Baseline		Exercise		Post-Exercise
Variable	Control	Cuffed	Control	Cuffed	Control	Cuffed
Heart rate (bpm)
20 mmHg	47 ± 2	―	100 ± 3^†	―	60 ± 3^	―
40 mmHg	48 ± 2	―	101 ± 2^†	―	55 ± 3^	―
60 mmHg	50 ± 2	―	100 ± 2^†	―	57 ± 3^	―
60 mmHg + Vit C	48 ± 2	―	100 ± 2^†	―	55 ± 2^	―
Diameters (mm)
20 mmHg	4.0 ± 0.09	4.2 ± 0.10	4.0 ± 0.08	4.0 ± 0.09	4.0 ± 0.07	4.1 ± 0.10*
40 mmHg	4.0 ± 0.07	4.1 ± 0.10	4.0 ± 0.08	4.1 ± 0.09	4.0 ± 0.10	4.2 ± 0.10*
60 mmHg	4.1 ± 0.10	4.1 ± 0.05	4.0 ± 0.09	4.1 ± 0.07	4.0 ± 0.09	4.2 ± 0.06*
60 mmHg + Vit C	4.0 ± 0.09	4.1 ± 0.08	4.0 ± 0.09	4.1 ± 0.09	4.0 ± 0.09	4.1 ± 0.10
SR_auc (a.u.)
20 mmHg	47.5 ± 3.69	57.4 ± 6.29*	―	―	64.8 ± 8.43^	67.9 ± 9.58
40 mmHg	45.5 ± 4.65	48.3 ± 5.22*	―	―	57.2 ± 7.44^	56.7 ± 5.41^
60 mmHg	45.7 ± 3.70	45.6 ± 3.91*	―	―	72.6 ± 12.91^	60.9 ± 6.97^
60 mmHg + Vit C	41.7 ± 3.37	54.0 ± 6.23*	―	―	55.5 ± 6.14^	61.5 ± 7.01
TTP (s)
20 mmHg	35.0 ± 2.13	38.5 ± 2.50	―	―	47.8 ± 5.40^	50.0 ± 5.83^
40 mmHg	35.3 ± 2.84	36.5 ± 2.63	―	―	41.0 ± 3.74	40.5 ± 2.92
60 mmHg	36.8 ± 2.31	34.5 ± 1.25	―	―	45.0 ± 4.55	40.5 ± 3.19
60 mmHg + Vit C	35.8 ± 2.26	35.8 ± 2.00	―	―	41.5 ± 3.91	40.8 ± 3.86

Values are means ± SE. SR_auc = shear rate area uncer the curve until peak dilation (arbitrary units). TTP = time-to-peak dilation. ^Significantly different versus baseline. *Significantly different versus control arm. †Significantly different versus post-exercise.

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