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. Author manuscript; available in PMC: 2020 Dec 1.
Published in final edited form as: Biomaterials. 2019 Sep 17;225:119493. doi: 10.1016/j.biomaterials.2019.119493

Table 2.

Comparison of properties of individual layers isolated from porcine AV leaflets and tested under uniaxial tension. The elastic modulus was calculated at a stress of 300 kPa. The extensibility was defined as the point at which a tangent drawn to the stress-strain curve at 300 kPa crossed the x-axis. N.S. = not significant [31].

Young’s modulus (kPa) Extensibility (%) Slope of stress relaxation curve
Circumferential Radial Circumferential Radial Circumferential Radial
Fibrosa 13.02 ± 5.139 4.56 ± 2.337 19.40 ± 4.971 27.77 ± 13.532 −6.46 ± 0.916 −8.62 ± 2.018
Ventricularis 7.41 ± 1.694 3.68 ± 0.550 21.79 ± 6.581 62.66 ± 16.101 −8.15 ± 1.851 −9.07 ± 1.299
Significance p < 0.011 N.S. N.S. p < 0.0001 p < 0.023 N.S.