Two-dimensional mechanical and ultrastructural correlates of bovine pericardium for prosthetic valves

Kangxiong Liao, Robert W.M. Frater, William Stevenson-Smith, Srdjan D. Nikolic, Frank Macaluso, Edward L. Yellin

Research output: Contribution to journalConference article

3 Scopus citations

Abstract

Scanning electron microscopy of bovine pericardium (BP) shows anisotropic collagen fiber orientation (CFO). We studied the effect of CFO on the breaking strength of longitudinal (L) and transverse (T) strips cut from six pieces of fresh (Fr), glutaraldehyde (Glu)-, or formaldehyde (For)-fixed BP loaded at constant rate until rupture. Maximum tensile stress (Stmax) and strain (Snmax) were measured. The Stmax of L strips were larger than T ones in all groups, and Snmax was the same. Similar results were also observed in 10 pieces of Glu fixed normal canine mitral valves (MV). Maximum tensile stress is obtained when the load is parallel to CFO in both canine MV and BP.

Original languageEnglish (US)
Pages (from-to)M349-M351
JournalASAIO Transactions
Volume37
Issue number3
StatePublished - Jul 1 1991

ASJC Scopus subject areas

  • Biophysics

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    Liao, K., Frater, R. W. M., Stevenson-Smith, W., Nikolic, S. D., Macaluso, F., & Yellin, E. L. (1991). Two-dimensional mechanical and ultrastructural correlates of bovine pericardium for prosthetic valves. ASAIO Transactions, 37(3), M349-M351.