Clonidine Versus Granisetron for Shivering Prevension

Intravenous Clonidine Versus Granisetron for Prevention of Post Spinal Anesthesia Shivering in Cesarean Section

Prevention of post spinal anesthesia shivering during cesarean section with its associated discomfort, distress, aggravation of pain, increased metabolic demands, and increased oxygen consumption

Shivering is one of the most important periperative complications seen in clinical practice. Several mechanisms have been postulated for its pathogenesis. Anesthetic-induced inhibition of thermoregulation resulting in hypothermia is an important cause of post anesthesia shivering, uncontrolled spinal reflexes, and cutaneous vasodilation are the other suggested mechanisms involved in the pathogenesis of shivering. Opioid receptors, α2 receptors, and serotonergic receptors also are involved of shivering.

Various drugs were studied for their potential role in prevention of peri-operative shivering such as tramadol, dexmedetomidine, ondansetron, ketamine, and pethidine.

We decided to perform a well-designed study to compare clonidine and granisetron which has been recently introduced as drugs for prevention and control of shivering after spinal anesthesia.

Inclusion Criteria: Patient acceptance.,Aged between 21-40 years old, BMI: 18- 30 kg/m2, ASA: I and II., Scheduled for elective cesarean section under spinal anesthesia.

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Exclusion Criteria:

History of hypersensitivity to drugs used in this study,Patients with history of chronic pain and taking analgesics, Patients with sepsis and Significant cardiac, liver or renal diseases, Uncooperative patients or with psychiatric disorders that prevent surgery under spinal anesthesia, Atrio-ventricular block in any degree, cardiac arrhythmias, valvular heart disease, kidney or liver diseases, neuromuscular disorders and diabetes mellitus

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