Effect of Dexmedetomidine on Stress Response and Emergence Agitation During Laparoscopic Surgery

Trial end date:
Target enrollment:
Participant gender:
Emergence agitation is a post-anesthetic phenomenon that develops in the early phase of general anesthesia recovery, and is characterized by agitation, confusion, disorientation, and possible violent behavior. The incidence of emergence agitation is less common in adults as compared to pediatric patients. It may lead to serious consequences for the patient such as bleeding, falling, removal of catheters and self extubation, which lead to further complications like hypoxia and aspiration. Despite its common occurrence, unclear etiology, and serious sequelae, emergence agitation has rarely been studied in adults. The stress response to surgery is an unconscious response to tissue injury. Activation of the sympathetic nervous system, increase of catabolic hormone release and pituitary gland suppression are considered a response to surgical stress, in clinical practice these activities cause changes in heart rate, blood pressure and biochemical fluctuations of noradrenaline, adrenaline, dopamine, and cortisol. Above all, these fluctuations prolong hospitalization and delay patients discharge. Dexmedetomidine is a highly selective alpha-2 receptor agonist having sedative, analgesic and sympatholytic properties. Decreased stress response to surgery ensuring a stable hemodynamic state is a beneficial property of the agent. Peri-operative use of dexmedetomidine also decreases postoperative opioid consumption, pain intensity, and antiemetic therapy. However, the data related to the effects of dexmedetomidine on reducing agitation from general anesthesia in adults are limited.
Phase 2/Phase 3
Accepts Healthy Volunteers?
Lead Sponsor:
Assiut University
Inclusion Criteria:

- ASA I - II Laparoscopic cholecystectomy under general anesthesia

Exclusion Criteria:

- Patients with cardiac disease, diabetes. reactive upper airway disease. allergies to
dexmedetomidine. cognitive disorders. renal insufficiency. hepatic dysfunction.
Chronic use of analgesics, cortisone or drugs known to interact with dexmedetomidine.