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題 名 | Effects of Myocardial Preservation on Enzyme Levels in Serum and Myocardium: A Clinical Study Comparing Cold Crystalloid Versus Warm Blood Cardioplegia=心肌保護效果的血清酶學、心肌組織酶學之研究:類晶質與常溫血心臟麻痺液之臨床對照評估 |
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作 者 | 袁師敏; | 書刊名 | 中華醫學雜誌 |
卷 期 | 59:1 1997.01[民86.01] |
頁 次 | 頁21-27 |
分類號 | 416.262 |
關鍵詞 | 心臟麻痺液; 酶活性; 缺血; 再灌流損害; Cardioplegia; Enzyme activity; Ischemia; Reperfusion injury; |
語 文 | 英文(English) |
中文摘要 | 背景:�t活性被視為評估心肌保護效果的手段之一。然而,�t學研究在不同心肌保護方法的對照評估中並不常見。 方法:選取20名開心心瓣膜替換手術病人作為本實驗研究對象,第一組接受低溫體外循環並類晶質心臟麻痺液(St.Thomas Hopital溶液)間斷灌注的心肌保護方法,第二組接受常溫體外循環並常溫血心臟麻痺液連續灌注的心肌保護方法。兩組病人乃經自由採樣,無論年齡、體重、體表面積大小或術前心功能級,皆無統計上的差異。手術期間經橈動脈插管或人工肺之動脈端抽取血樣。開放上行主動脈之前即刻缺血期和開放上行主動脈之後30分鐘再灌流期各從右心房肌取樣。對兩組血清谷丙轉氨�t(ALT)、谷草轉氨�t(AST)、乳酸去氫�t(LDH)及LDH之同功�t之積聚活性、兩組間各項(同功)�t之相關性、血鉀和各血清�t之多素回歸、兩組每克心肌組織 ALT、AST、LDH、肌酸激�t( CK )、superoxide dismutase(SOD)和malondialdehyde(MDA)之活性予對照評估。 結果:各項(同功)�t之積聚活性組間比較在統計上無差異。除第一組CK-ALT對子外,其餘各血清其(同功)�t對子均具良好相關性,兩組的血清(同功)�t相關性之回歸值無顯著的差異。第一組血鉀與各血清�t均具良好的相關性,第二組則無。心肌組織�t學也沒有發現組間、組內之統計學差異。 結論:根據�t學之研究結果,兩種心臟麻痺液灌流技術可獲幾近一致的對抗心肌缺血再灌流損害之效果。 |
英文摘要 | Background: Enzyme activities have been recognized as one of the parameters in the assessment of the effects of various forms of myocardial preservation. However, comparison between different methods of myocardial protection by the use of enzyme assay in clinical settings is uncommon. Methods: Twenty patients who under-went open-heart valve replacement were divided equally into two groups: intermittent perfusion of cold crystalloid (St. Thomas Hospital solution) with hypothermic cardiopulmonary bypass (CPB) (Group I) and continuous administration of warm blood cardioplegia with normothermic CPB (Group II). The groups were similar with respect to sex, age, body surface area and preoperative ventricular function. Blood samples were obtained from an indwelling radial arterial catheter or from the arterial end of the oxygenator. Biopsy specimens from the right atrium were obtained immediately before aortic declamping (ischemic period), and 30 minutes after crossclamp removal (reperfusion period). The cumulative release of serum alanine aminotransferase (ALT), aspartate aminotransferase (AST), lactate dehydrogenase (LDH) and its isoenzymes; linear correlation between (iso)-enzymes of each group and multivariate regression between blood potassium and serum enzymes were determined. The enzyme levels of myocardial specimens including ALT, AST, LDH, creatine phosphokinase (CK), superoxide dismutase (SOD), and malondialdehyde (MDA) were recorded and compared both between the two groups and within each group. Results: No significant intergroup difference was found in the cumulative release of the serum (iso)-enzymes. Close relationships were found in all the correlation coefficients except for the CK-ALT couple in Group I. Neither were intergroup differences found in each parameter of the linear correlation between the (iso)-enzymes. A close correlation between blood potassium and serum enzymes was found in Group I rather than in Group II. Differences of enzyme levels of myocardial specimens between ischemic periods and reperfusion periods were also not statistically significant either within the group or between the groups. Conclusions: Judging from the results of enzyme assay, similar myocardial preservation effects against ischemia-reperfusion injuries could be obtained by either of the techniques of myocardial preservation. |
本系統中英文摘要資訊取自各篇刊載內容。