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- W139496768 abstract "There are conflicting reports of the beneficial effects of University of Wisconsin (UW) cardioplegic solution used in heart preservation techniques. Therefore we investigated the efficacy of myocardial protection in adult rat hearts subjected to single-dose infusion (3 minutes) of nonoxygenated cardioplegic solutions (UW or St. Thomas' Hospital solution No. 2 [STH]) and stored at 4 degrees C by immersion in the same solution or in saline solution. Isolated working-heart preparations (n = 8 per group) were used to assess the prearrest (20 minutes' normothermic perfusion) and postischemic left ventricular functions. Four groups of hearts underwent 5, 8, 10, and 20 hours of cold ischemia (4 degrees C) in UW solution. Hearts stored for 8 to 20 hours showed no postischemic recovery of cardiac pump function (aortic flow, 0%), had decreased levels of myocardial high-energy phosphates, and were highly edematous (50% to 70% increased). After 5 hours of storage there was also poor recovery of aortic flow, coronary flow, and aortic pressure (55.0% +/- 19.4%, 67.1% +/- 5.1%, and 58.1% +/- 11.7%, respectively) but good recovery of adenosine triphosphate, creatine phosphate, and guanosine triphosphate (18.54 +/- 1.42, 29.99 +/- 2.05, and 1.64 +/- 0.14 mumol/gm dry weight, respectively). In contrast, hearts arrested and stored in STH solution for 5 hours rapidly established normal left ventricular functions (aortic flow, 111.5% +/- 2.5%; cardiac output, 99.1% +/- 1.2%; coronary flow, 85.0% +/- 3.4%; heart rate, 95.8% +/- 2.7%; and aortic pressure, 94.6%). A group of hearts arrested with STH solution but stored in saline solution recovered more slowly, had only partial return of function (aortic flow, 73.6% +/- 14.8%; p less than 0.01 vs STH/STH group), and had significantly greater tissue water content (8.020 +/- 0.080 vs 6.870 +/- 0.126 ml/gm dry wt; p less than 0.01). These results demonstrate the superior preservation of explanted hearts at 4 degrees C obtained by STH cardioplegic solution compared with UW solution under conditions used for transplantation." @default.
- W139496768 created "2016-06-24" @default.
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- W139496768 date "1991-07-01" @default.
- W139496768 modified "2023-10-17" @default.
- W139496768 title "Functional recovery of hearts after cardioplegia and storage in University of Wisconsin and in St. Thomas' Hospital solutions." @default.
- W139496768 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/1911796" @default.
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