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Validation of the slaughterhouse porcine heart model for ex-situ heart perfusion studies. | LitMetric
Introduction : To validate slaughterhouse hearts for heart perfusion studies, we compared cold oxygenated machine perfusion in less expensive porcine slaughterhouse hearts ( = 7) to porcine hearts that are harvested following the golden standard in laboratory animals ( = 6).Methods : All hearts received modified St Thomas 2 crystalloid cardioplegia prior to 4 hours of cold oxygenated machine perfusion. Hearts were perfused with homemade modified Steen heart solution with a perfusion pressure of 20-25 mmHg to achieve a coronary flow between 100-200 mL/min. Reperfusion and testing was performed for 4 hours on a normothermic, oxygenated diluted whole blood loaded heart model. Survival was defined by a cardiac output above 3 L with a mean aortic pressure above 60 mmHg.Results : Both groups showed 100% functional survival, with laboratory hearts displaying superior cardiac function. Both groups showed similar decline in function over time.Conclusion : We conclude that the slaughterhouse heart can be used as an alternative to laboratory hearts and provides a cost-effective method for future heart perfusion studies.
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