Comparative Study between Intramuscular Ephedrine Versus Intravenous Ondansetron Versus Intravenous Dexamethasone for Prevention of Spinal Anaesthesia-Induced Hypotension in Parturients Undergoing Caesarean Section

Abstract

Background: Hypotension is one of the most common intra-operative complications associated with spinal anaesthesia. Its incidence in caesarean section has been estimated to be as high as 50-60%. The cardinal symptoms of hypotension include light headedness or dizziness. If the blood pressure is markedly low, loss of consciousness and seizures may occur. Several studies suggest that hypotension during spinal anaesthesia may causes everal adverseevents such as delirium and coronary ischemia. In spite of using a lot of prophylactic measures as left displacement of the pregnant uterus, Administration of pre-load or co-load of crystalloid and colloid solutions and use of vasopressors, none of them can totally avoid maternal hypotension post-spinal anaesthesia.