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Eur J Cardiothorac Surg 2001;20:550-554
© 2001 Elsevier Science NL

IL-8 concentration in coronary sinus blood during early coronary reperfusion after ischemic arrest

Romuald Lango, Lech Anisimowicz, Janusz Siebert, Jan Rogowski, Alicja Bakowska, Pawe Mroziski, Mirosawa Narkiewicz

Clinic of Cardiac Surgery, Medical University of Gdask (Akademia Medyczna w Gdasku), Debinki 7, 80-211 Gdask, Poland

Received 23 October 2000; received in revised form 31 May 2001; accepted 1 June 2001.

Corresponding author. Tel.: +48-58-3492482; fax: +48-58-3492471
e-mail: rlango{at}amg.gda.pl

Objective: Activation of the inflammatory response is an important factor contributing to complications of cardiopulmonary bypass. Increased level of proinflammatory cytokine – IL-8 has been reported during coronary artery bypass grafting (CABG) operations with the use of cardiopulmonary bypass. The aim of this study was to find out whether the heart is the main source of IL-8 during early coronary reperfusion. Methods: IL-8 concentration in coronary sinus before clamping and 5, 10, and 15 min after declamping of the aorta as well as in radial artery blood before clamping and 10 min after declamping of the aorta, was assessed in 30 patients undergoing CABG surgery. Results: We observed increase in IL-8 concentration in coronary sinus blood after declamping of the aorta, however no difference between coronary sinus and arterial blood concentration was noted. The median value of IL-8 concentration in coronary sinus blood was 1.85 pg/ml before ischemia and 15.4, 20.3, and 29.3 pg/ml in 5, 10 and 15 min after aortic declamping, respectively. Our additional finding was that there was a negative correlation between IL-8 level and hemoglobin saturation with oxygen in coronary sinus blood 10 min after coronary reperfusion. Conclusions: We conclude that the heart is not the main source of IL-8 in early coronary reperfusion, although coronary reperfusion induces its release.

Key Words: Cardiopulmonary bypass • Systemic inflammatory response syndrome • IL-8 • Corticosteroids

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