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- W2460399634 abstract "Early graft failure accounts for a substantial portion of the mortality after heart transplantation. This factor underscores the need for the development of reliable methods for predicting graft performance and thus ensuring optimal clinical outcome. The aim of this study was to describe the link between myocardial metabolism evaluated throughout preservation with the use of phosphorus 31-nuclear magnetic resonance spectroscopy and ventricular contractility after reperfusion. Thirteen pig hearts were excised and preserved from 3 to 12 hours with clinical techniques. During preservation the hearts underwent phosphorus 31-nuclear magnetic resonance spectroscopy. After reperfusion, left ventricular contractility was evaluated with an isolated heart model undergoing isovolumetric contraction. Throughout storage, beta-adenosine triphosphate remained stable and intracellular pH and phosphocreatine decreased exponentially, whereas inorganic phosphate increased exponentially. Intracellular pH, phosphocreatine, inorganic phosphates measured at the onset of preservation, and intracellular pH and phosphocreatine measured at the end of preservation correlated significantly with the left ventricular contractility after reperfusion. We conclude that the metabolic state of myocardium at excision is especially important and that phosphorus 31-nuclear magnetic resonance evaluation of the heart during preservation appears to provide reliable indexes for predicting subsequent ventricular contractility after reperfusion." @default.
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- W2460399634 date "1994-07-01" @default.
- W2460399634 modified "2023-10-17" @default.
- W2460399634 title "Left ventricular contractility after hypothermic preservation: predictive value of phosphorus 31-nuclear magnetic resonance spectroscopy." @default.
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