الفهرس 
Factors affecting afterloadOnly 14 pages are availabe for public view
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Abstract
Low cardiac output syndrome is defined as that pathophysiological state in which the cardiac output is not sufficient to maintain blood flow to meet the metabolic needs of the body. In patients undergoing open heart surgery, this syndrome deserves special consideration as it became more common in recent years. It can be met either preoperatively or after cessation of cardiopulmonary bypass, due to post-ischemic global myocardial dysfunction existed preoperatively or created during the pre-bypass or the post bypass period. Therapeutic intervention of low cardiac output syndrome should ideally provide positive inotropy without increasing myocardial oxygen consumption, afterload reduction, antiarrhythmic activity and selective renal vasodilatation. The current study compared the hernodynamic and the renal effects of doparnine, dobutamine and dopexamine in patients with low cardiac output after weaning from extracorporeal circulation.