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Thorac Cardiovasc Surg 2003; 51(2): 57-61
DOI: 10.1055/s-2003-38983
Original Cardiovascular
© Georg Thieme Verlag Stuttgart · New York

The Effects of Intracoronary Administration of Vitamin E on Myocardial Ischemia-Reperfusion Injury During Coronary Artery Surgery

S.  Canbaz1 , E.  Duran1 , T.  Ege1 , H.  Sunar1 , M.  Cikirikcioglu1 , M.  Acipayam1
  • 1Trakya University, Medical Faculty, Department of Cardiovascular Surgery, Edirne, Turkey
Further Information

Publication History

Received: October 21, 2002

Publication Date:
05 May 2003 (online)

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Abstract

Background: Vitamin E has a strong antioxidant capacity, and has been used in several ischemia-reperfusion studies. The aim of this study was to investigate the effects of water-soluble vitamin E (alpha-tocopherol) on myocardial protection during coronary artery surgery. Methods: Water soluble vitamin E (100 mg) in tepid saline (n = 14) or tepid saline alone (n = 16) was administered into the coronary arteries at the end of aortic cross-clamping. Cardiac troponin-I (cTn-I), MB-isoenzyme of creatine kinase (CK-MB), myoglobin, blood gas, and lactate levels in systemic and coronary sinus blood and hemodynamic variables were assessed during and after the operation. Results: Eight hours after reperfusion, cTn-I levels increased to 3.06 ± 1.8 ng/ml and 6.97 ± 3.9 ng/ml in the vitamin E group and control group, respectively (p = 0.01). Coronary sinus lactate concentration was 2.68 ± 0.5 mmol/l in the vitamin E group and 4.01 ± 1.5 mmol/l in the control group 60 minutes after reperfusion (p = 0.027). Conclusions: Administration of vitamin E into the coronary arteries before removal of the aortic cross-clamp can reduce myocardial cell injury and protect the myocardium from ischemia-reperfusion injury.

Key words

Vitamin E - alpha tocopherol - troponin I - lactate - ischemia-reperfusion injury - coronary artery bypass grafting

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Dr. Suat Canbaz

Trakya University Medical Faculty, Department of Cardiovascular Surgery

TR 22030 Edirne

Turkey

Phone: 90 284 235 76 56 (office) 90 284 235 57 11 (home)

Fax: 90 284 235 06 65

Email: scanbaz2001@yahoo.com