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January 1, 1985The Japanese Journal of PhysiologyOpen Access

Anisotropic elasticity of bovine pericardial tissues.

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Population

12 bovine pericardial sacs from male animals (ages 4-5 years, weight 150-220 kg)

Design

Preclinical

Authors

ARAdja RADJEMANUniversiti Sains MalaysiaSLSoo Chin LiewNational University of SingaporeKLK.O. LimUniversiti Sains Malaysia

Discussion

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Implication

Supports alignment of pericardial tissue orientation in valve fabrication; leaves open effects on long-term clinical outcomes.

Structured PICO

P
Population
12 bovine pericardial sacs from male animals (ages 4-5 years, weight 150-220 kg)
I
Intervention
Uniaxial tensile testing of tissue strips cut in three directions (vertical, horizontal, 45 degrees) at four strain rates (666.7, 166.7, 66.7, and 6.7% min-1)
O
Outcome
Stress-strain response, including extensibility, stress at rupture, and strain at rupturesurrogate

Bovine pericardial tissue exhibits significant anisotropic and viscoelastic properties, highlighting the need to align tissue orientation with expected mechanical stresses when fabricating bioprosthetic heart valves.

Limitations

  • Results are not exhaustive
  • Lack of dynamic responses, relaxation, and creep phenomena data
  • Lack of fatigue tests
  • Effect of chemical preservation not investigated

Cite This Study

RADJEMAN et al. (1985) studied this question.

synapsesocial.com/papers/6a9414eeb6c2e2f51e00e6dahttps://doi.org/10.2170/jjphysiol.35.831
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