Abstract:Background: Shivering is a normal physiologic protective mechanism of the body, which in response to core hypothermia, increases metabolic heat production that results in involuntary, oscillatory muscle activity. Spinal anesthesia promotes redistribution of body heat from central to the peripheral compartments. After spinal anesthesia shivering occurs in 40-60% of patients. Tramadol is synthetic codeine analog that is weak Mu opioid receptor agonist. It also has effect of norepinephrine and serotonin reuptake … Show more
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