Myocardial protection has become an essential adjunctive measure in cardiac surgery to bail the myocardium out of ischemia/reperfusion-induced damage during the operation. Experimental studies have shown that lipid emulsion infusion just before reperfusion (i.e., intralipid postconditioning (ILPC)) could reduce myocardial infarct sizes, improve cardiac function, and reduce myocardial I/R injuries, despite the interesting experimental findings, the potential clinical usage of lipid emulsion in preventing myocardial I/R injury needs to be further investigated.
The study of myocardial protection has improved aiming to prevent intraoperative myocardial injury, which can lead to ventricular dysfunction, arrhythmias, low cardiac output and other complications, often irreversible ones. Nowadays there are numerous methods of myocardial protection during cardiac surgery, But still there is no best myocardial protection technique. Despite improved myocardial protection strategies, cardioplegic arrest and ischemia still result in ischemic reperfusion injury during cardiac surgery. Many drugs have proved a pharmacological postconditioning effect on the heart at the onset of reflow and had been shown to limit infarction size and decrease the ischemic/reperfusion injury ,Postconditioning (POC) has been reported to promote left ventricular functional recovery after global ischemia with cardioplegic arrest on cardiopulmonary bypass in a large animal model Smoflipid is a sterile safe lipid emulsion comprised of soybean oil (30%), medium chain triglycerides (30%) olive oil (25%) \& fish oil (15%) that has been associated with decreased oxidative injury, improved liver function and increased antioxidant activity.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
PREVENTION
Masking
NONE
Enrollment
68
will receive intravenous infusion of 2ml\\kg of smoflipid 20%, in the internal jugular vein 10 minutes before removal of aortic cross clamp in a constant speed
will receive intravenous infusion of 2ml\\kg of normal saline 0.9%, in the internal jugular vein 10 minutes before removal of aortic cross clamp in a constant speed.
myocardium protection
assessment of lipid emulsion effect on post cardiopulmonary bypass ischemic reperfusion injury through measuring ( cardiac troponin (CTnI) in ng/ml )
Time frame: 72 hours
inflammatory response
assessment of the inflammatory response to lipid emulsion infusion through measuring ( Interleukein-6 (IL-6) in ng/l ).
Time frame: 72 hours
myocardium protection
assessment of lipid emulsion effect on post cardiopulmonary bypass ischemic reperfusion injury through (cardiac specific creatine kinase (CK-MB) in units/l )
Time frame: 72 hours
inflammatory response
assessment of the inflammatory response to lipid emulsion infusion through measuring ( C Reactive protein (CRP) in mg/l )
Time frame: 72 hours
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