Pig myocardia preservation mode

Published: 12 January 2023| Version 1 | DOI: 10.17632/5xjy6v5sy9.1
Contributor:
Israel Mabuda

Description

The shared data describe the mechanical properties of South African Landrace (8 months old females) porcine hearts were collected from local abattoir. The mechanical data composed of the Uniaxial stress- strain curve for the three cycles along the circumferential and longitudinal direction of the porcine heart myocardium right ventricle which was previously immersed in water before storage and experimented under a 6.67 s-1 strain rate. Further processing with polynomial equations of data was conducted to analyse the three stretches along the circumferential and longitudinal. The mechanical data composed of the Uniaxial stress- strain curve for the three cycles along the circumferential and longitudinal direction of the porcine heart myocardium right ventricle which was previously immersed in NACL solution before storage and experimented under a 13.3 s-1 strain rate File name description below; 1 Nacl pig Uniaxial - Right ventricle myocardia data that was first submerged in sodium chloride before cold storage. The data consists of ten tests processed Stress -Strain data for the circumferencial and longitudinal directions. Each cooling and freezing storage mode has ten stress-strain and an average. 2 Overall pig hears - Right ventricle myocardia data that was first submerged in water before cold storage. The data consists of ten tests processed Stress -Strain data for the circumferencial and longitudinal directions. Each cooling and freezing storage mode has ten stress-strain and an average.

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Steps to reproduce

To archive this each myocardium is subjected to tensile test on a uniaxial machine. The slaughtered number of porcine heart myocardium are submerged in still water and NaCl solution for preservation before stored in freezer (-2°C, -10˚C, -20°C) or refrigeration (2°C-3°C). The frozen myocardium is then thawed until all the ice melts before subjected to uniaxial testing. Porcine heart myocardium consist of left ventricle, septum, and right ventricle and all the walls are anisotropic, all expressing different mechanical properties. The samples are cut to size and divided according to the two directions of fibre (longitudinal and circumferential) as the myocardia is anisotropic, then a 40% strain magnitude is used to load the samples after clamping on the uniaxial clamps. Slow and fast strain rates are induced to find the reaction of the myocardia under slow and fast pace.

Institutions

University of South Africa

Categories

Myocardial Biology

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