Age-Specific Acute Changes in Carotid-Femoral Pulse Wave Velocity With Head-up Tilt.

RESULTS cfPWV significantly increased upon body tilting (8.0 ± 2.0 m/s supine, 9.1 ± 2.6 m/s at 30°, 9.5 ± 3.2 m/s at 60°, P for trend <0.01); a positive trend was also observed for heart rate (HR; P < 0.01).

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supine posture induced an increase in DBP and HR, and a nonsignificant trend toward increasing aortic PWV values. 17 Other studies suggested that PWV changes in body position during head-up tilt was associated with hydrostatic BP variations. 20 , 21 Notwithstanding profound differences in the aim and design of studies, our results are in keeping with these observations.

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