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  • Title: Initial large-dose administration of modified St. Thomas' solution.
    Author: Hiraoka A, Nakajima K, Kuinose M, Totsugawa T, Yoshitaka H.
    Journal: Asian Cardiovasc Thorac Ann; 2014 Mar; 22(3):267-71. PubMed ID: 24585900.
    Abstract:
    BACKGROUND: We introduced an initial large dose of modified St. Thomas' Hospital cardioplegic solution with the aim of providing both myocardial protection as well as a smooth intraoperative process. METHODS: In 90 cases of isolated aortic valve replacement, we used the modified technique of cardioplegia in 45 (group S) and conventional administration of glucose-insulin-potassium solution in 45 (group G). The patients were selected at random. In group S, we added 4 mEq of potassium to the original St. Thomas' Hospital solution and administered 30 mL·kg(-1) as an initial dose. The temperature was decreased to 2. RESULTS: The mean of reperfusion time after declamping in group S was significantly shorter (16.7 ± 6.4 vs. 21.5 ± 10.0 min; p = 0.007). The average of postoperative maximum creatine kinase-MB was significantly lower in group S (25.6 ± 9.5 vs. 40.6 ± 37.2 IU·L(-1); p = 0.014). On multivariate analysis, use of the modified cardioplegia and aortic crossclamp time were significantly associated with creatine kinase-MB level and reperfusion time after declamping. CONCLUSIONS: This modified technique was an acceptable option that provided a bloodless operative field and avoided multiple cardioplegic administrations.
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