Abstract
Cardiac surgical complications may be caused by a plethora of events. Oxygen free radicals may participate in the pathophysiology of cardiopulmonary bypass and myocardial ischaemia-reperfusion injury. The evidence of free radical production during bypass is limited, and studies of the effect of free radical scavengers even more limited. Experimental work points towards a role of oxygen free radicals in reperfusion damage of the ischaemic myocardium, but clinical data are lacking. Hitherto the clinical availability of free radical scavengers/antioxidants has been scarse. At present more such drugs are becoming clinically applicable, and trials on their effect are highly warranted, in particular as an adjuvant in myocardial protection.
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