Measurement of Viscoelastic Properties of Arteries in the Living Dog

• DOI: 10.1161/01.res.23.1.111
• Publication Date: 2012-06-12T00:44:49Z
• Authors: BARRY S. GOW; MICHAEL G. TAYLOR
• Keywords: Pulse pressure; Abdominal aorta; Arterial tree

Dynamic elastic moduli (E dyn ) and viscous (ηω) of the arterial wall were obtained at a number sites systemic vascular tree living dogs anesthetized with pentobarbital. Constants calculated using first harmonics pressure diameter from Fourier analysis simultaneously recorded pulse waves. The means standard errors E , in dynes cm -2 x 10 6 mean blood pressures ranging 87 to 130 mm Hg frequencies 1.1 2.8 cps were: 3.0±0.33 (9 midthoracic aortas), 9.8±1.2 (7 midabdominal 11.0 (4 iliac arteries), 12.3±1.2 (11 femoral arteries). modulus was approximately 9% aorta 12% abdominal arteries. Pulse wave velocities values relative thickness by Moens-Korteweg equation agreed accepted values. A waves shown be unsatisfactory for determining frequency dependence viscoelastic constants because anomalous behavior parameters. In this may have been partly attributable artefact; however, there strong evidence that elsewhere nonlinear relationships interfered accurate determination relatively small, higher-order harmonic components.