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Leukocyte-depleted blood cardioplegia reduces cardiac troponin T release in patients undergoing coronary artery bypass grafting

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Abstract

Objective: Activated neutrophils have been implicated in reperfusion injury of the myocardium. Leukocyte depletion at reperfusion may contribute to better myocardial protection during cardiac surgery. We tested the efficacy of leukocyte-depleted blood cardioplegia in reducing myocardial injury during coronary artery bypass grafting.Methods: Subjects were 27 patients undergoing elective coronary artery bypass grafting divided into controls (perfused with nonfiltered blood cardioplegia, n = 12) and those undergoing leukocyte-depleted blood cardioplegia (n = 15). Oxygenated blood mixed with a potassium crystalloid cardioplegic solution was delivered through the aortic root at every 30 minutes during cardiac arrest and terminal warm blood was administered before aortic declamping in both groups. In leukocyte depletion, blood was filtered prior to the mixture with crystalloid solution in the cardioplegic reservoir.Results: Patient profiles did not differ significantly between groups, nor did systemic leukocyte count during or after surgery despite more than 81% removal of leukocytes in cardioplegic delivery. No consistent differences between groups in creatine kinase or creatine kinase-MB were seen up to 18 hours after surgery. Peak troponin T levels were significantly lower in the leukocyte-depleted blood cardioplegia group (0.52±0.13 ng/ml), however, than in controls (3.85±0.85 ng/ml).Conclusion: We concluded that leukocyte-depleted blood cardioplegia reduces the release of cardiac troponin T in patients undergoing elective coronary artery bypass grafting and may produce better myocardial protection in patients with impaired cardiac function or a damaged myocardium.

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Authors and Affiliations

  1. Department of Surgery, Institute of Clinical Medicine, University of Tsukuba, 1-1-1 Tennoh-dai, 305-8575, Tsukuba, Japan

    Yuji Hiramatsu, Tadashi Koishizawa, Kanji Matsuzaki, Yoshiharu Enomoto & Yuzuru Sakakibara

  2. Department of Cardiovascular Surgery, Tsukuba Memorial Hospital, Tsukuba, Japan

    Tadashi Koishizawa, Kanji Matsuzaki & Yoshiharu Enomoto

Authors
  1. Yuji Hiramatsu
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  2. Tadashi Koishizawa
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  3. Kanji Matsuzaki
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  4. Yoshiharu Enomoto
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  5. Yuzuru Sakakibara
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Additional information

Read at the 6th Annual Meeting of The Asian Society for Cardiovascular Surgery, Tokyo, Japan, February 18–20, 1998.

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Hiramatsu, Y., Koishizawa, T., Matsuzaki, K. et al. Leukocyte-depleted blood cardioplegia reduces cardiac troponin T release in patients undergoing coronary artery bypass grafting. Jpn J Thorac Caridovasc Surg 48, 625–631 (2000). https://doi.org/10.1007/BF03218217

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  • DOI: https://doi.org/10.1007/BF03218217

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