Efficacy and Safety of Oral Propranolol Premedication to Reduce Reflex Tachycardia During Hypotensive Anesthesia With Sodium Nitroprusside in Orthognathic Surgery: A Double-Blind Randomized Clinical Trial

Premedication with oral propranolol 10 mg before hypotensive anesthesia with sodium nitroprusside is safe and effective to reduce reflex tachycardia and the amount of sodium nitroprusside used.