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Clinical Investigations: SURGERY |

Cardioprotective Effect of Adenosine Pretreatment in Coronary Artery Bypass Grafting*

Minxin Wei, MD, PhD; Pekka Kuukasjärvi, MD, PhD; Jari Laurikka, MD, PhD; Eva-Liisa Honkonen, MD, PhD; Seppo Kaukinen, MD, PhD; Seppo Laine, MSc; Matti Tarkka, MD, PhD
Author and Funding Information

*From the Division of Cardiovascular Surgery (Drs. Wei, Kuukasjärvi, Laurikka, and Tarkka), the Department of Anesthesia and Intensive Care (Drs. Honkonen and Kaukinen), and the Department of Clinical Microbiology (Dr. Laine), Tampere University Hospital, Tampere, Finland.

Correspondence to: Matti Tarkka, MD, PhD, Division of Cardiovascular Surgery, Tampere University Hospital, PO Box 2000, Fin-33521 Tampere, Finland; e-mail: matti.tarkka@tays.fi



Chest. 2001;120(3):860-865. doi:10.1378/chest.120.3.860
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Objective: There are several reports of the use of adenosine as a cardioprotective agent during cardiac surgery. Adenosine treatment might affect neutrophils and inflammatory mediators. The present prospective randomized study was designed to investigate the effect of adenosine pretreatment on myocardial recovery and inflammatory response in patients undergoing elective coronary artery bypass surgery.

Design: A prospective, randomized, controlled study.

Setting: Operative unit and ICU in a university hospital in Finland.

Patients: Thirty male patients undergoing primary, elective coronary revascularization.

Interventions: Patients in the adenosine group received a 7-min infusion of adenosine (total, 650 μg/kg) before the initiation of cardiopulmonary bypass.

Measurements: Postoperative creatine kinase (CK)-MB release and hemodynamics were recorded. Perioperative leukocyte and cytokine release were measured.

Results: Adenosine pretreatment resulted in less CK-MB release and an improved postbypass cardiac index. Similar leukocyte counts and cytokine responses were seen in both groups perioperatively. Neutrophil counts were similar between the groups before and after myocardial ischemia when measured simultaneously in arterial and coronary sinus blood.

Conclusions: The present results support the hypothesis that adenosine pretreatment is cardioprotective in humans, but the present dose failed to regulate the inflammatory responses after coronary artery bypass grafting.

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