(1) Objectives: Is the Supraclavicular Block Duration Can Be Prolonged By adding Dexmedetomidine to Lidocaine?
(2) Design, This study is randomized double-blind clinical trial study.
(3) Setting and Conduct:
Patients are randomly allocated into two groups, group D, receiving 30 ml of 1.5% lidocaine with 1 mcg/kg of dexmedetomidine and group C, receiving 30 ml of 1.5% lidocaine with isotonic normal saline. Sensory and motor block were assessed by pin prink and bromage scale every 3 minutes, respectively until complete block is defined. Intraoperative monitoring of blood pressure, heart rate and verbal rating scale will performed at an interval of 5 minutes until 15 minutes then every 15minutes until 1houre and then every 30minutes until the sensory and motor block has completely worn off. Finally, patients' data in two groups will compared.
(4) Participants including major eligibility criteria: The Inclusion criteria are age between 18-60 years old with ASA class 1-2 who will candidate for radial or ulnar fracture surgery.
The exclusion criteria will consist of patients on adrenoreceptor agonist, known hypersensitivity to local anesthetic drugs.
(5) Intervention: Patients are randomly allocated into two groups, group D, will receive 30 ml of 1.5% lidocaine with 1 mcg/kg of dexmedetomidine and group C, will receive 30 ml of 1.5% lidocaine with isotonic normal saline. (6) main outcome measures (variables):
Primary Outcome; Duration of Motor and Sensory Blockade.
Secondary Outcome:heart rate , Blood Pressure and Nausea ,Vomiting.