Reduction in MACbar of Sevoflurane by Dexmedetomidine in Children

• Status: Completed
• Trial end date: 2014-04-01
• Target enrollment: 0
• Participant gender: All

Summary

The study was designed to define the interaction of intravenous infusion of dexmedetomidine, an a2-adrenergic agonist, and sevoflurane in children having surgery by using the minimum alveolar concentration which can block adrenergic and cardiovascular responses to incision(MACbar) of sevoflurane as the measure of anesthetic potency.

• Phase: N/A
• Accepts Healthy Volunteers?: No

Details

• Lead Sponsor: Cai Li
• Treatments: Dexmedetomidine; Sevoflurane

Criteria

Inclusion Criteria:

• aged 2 to 6 yr

• American Society of anesthesiologists I or II

• scheduled to have general anesthesia and to have skin incisions on the abdomen

Exclusion Criteria:

• anemia or abnormal preoperative electrolyte concentrations

• a history of cardiovascular or central nervous system diseases

• a history of pulmonary disease

• known hepatic or renal disease

• a body weight exceeding 50% of the upper limit of ideal body weight for height

• taking drugs with cardiovascular or central nervous system effects

• use of any experimental drug within the past 30 days

• allergy to any drug that may be administered during the study

• exposure to general anesthesia within the previous 7 days

• second- or third-degree atrioventricular block

• taking drugs preoperatively that would interfere with MAC determination(e.g.,opioids or sedatives)