Clinical relevance of distal arterial compliance

Patel, Dali J.; Coleman, Bernell; Carpentier, Robert; Mehrotra, Prafulla; Tearney, Russell J.; Cothran, Laval N.; Curry, Charles L.

doi:10.1097/00004872-199208001-00005

Cited by 2 publications

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“…Blood vessels behave differently depending on where in the vascular tree they are located, e.g., proximal or distal to the heart (Silver et al, 2003;Patel et al, 1992). In addition, there appears to be differences in vascular mechanics depending on whether we are discussing the arterial or venous side of the vascular system (Monson et al, 2005;Silver et al, 2003;Ozturk, 1997).…”

Section: Discussionmentioning

confidence: 99%

A Mechanical Model of Porcine Vascular Tissues-Part II: Stress–Strain and Mechanical Properties of Juvenile Porcine Blood Vessels

Snowhill

Silver

2005

Cardiovasc Eng

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Our laboratory is studying the influence of the volume fractions and the organization of various macromolecules and cells in vascular tissue on the physical properties of vessel wall. The current investigation reports various mechanical properties of aorta, vena cava, carotid artery and iliac artery of the swine including: low-strain and high-strain moduli, transition from low-strain to high-strain behavior, the ultimate tensile stress, and the ultimate strain. Tissues were tested using a uniaxial incremental stress-strain technique, which allowed us to capture viscous, elastic, and total data simultaneously. Vessels were strained throughout their entire strain range until failure was achieved. Lowstrain modulus showed sporadic differences between blood vessels and some dependence on strain-rate. The high-strain modulus was consistently greater in vena cava (2.2 MPa for viscous stress-strain-9.6 MPa for total stress-strain) than other vessels. The ultimate tensile strength of vena cava (0.46 MPa for viscous and 2.5 MPa for total) was again greater than in other vessels and there was some strain-rate dependence. The ultimate strain of carotid artery (180%) was greater in the transverse direction than in other vessels. Viscosity measurements indicated that blood vessels are thixotropic (viscosity decreased 2 orders of magnitude for 2 orders of magnitude increase in strain-rate).

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Section: Discussionmentioning

confidence: 99%

A Mechanical Model of Porcine Vascular Tissues-Part II: Stress–Strain and Mechanical Properties of Juvenile Porcine Blood Vessels

Snowhill

Silver

2005

Cardiovasc Eng

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Radial Artery Compliance in Patients with Peripheral Vascular Disease

et al. 1997

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Compliance in largely central arteries of patients with peripheral vascular disease (PVD) has been reported to be reduced. However, the arterial tree is an inhomogeneous system, and there remains uncertainty about whether the peripheral arteries (e.g. the medium-sized muscular radial artery) undergo a similar change to the central arteries. The aim of this study was to investigate the radial artery elasticity in 19 patients with PVD compared with 18 normal subjects of comparable age and sex. Using a noninvasive high-resolution echo-tracking device coupled to a photoplethysmograph (Finapres system) allowing simultaneous arterial diameter and finger blood pressure monitoring, we measured the radial artery compliance by determining the diameter-pressure, compliance-pressure and distensibility-pressure curves. The results showed that the diameter of the radial artery was similar in the two groups, but that the compliance and distensibility were not further reduced in patients with PVD than in the normal controls at 100 mmHg and for a common blood pressure range. The present studies demonstrate that in patients with PVD the radial arterial compliance is not reduced, which indicates that the change in arterial elasticity is not identical. The potential mechanisms involved in this change in radial artery compliance are discussed.

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Clinical relevance of distal arterial compliance

Cited by 2 publications

References 0 publications

A Mechanical Model of Porcine Vascular Tissues-Part II: Stress–Strain and Mechanical Properties of Juvenile Porcine Blood Vessels

A Mechanical Model of Porcine Vascular Tissues-Part II: Stress–Strain and Mechanical Properties of Juvenile Porcine Blood Vessels

Radial Artery Compliance in Patients with Peripheral Vascular Disease

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