Anesthesia & Clinical Research
Open Access

Abstract

A Comparison of Dexmedetomidine Versus Propofol on Hypotension During Colonoscopy Under Sedation

Anchalee Techanivate, Tewarux Verawattaganon, Chuleeporn Saiyuenyong and Pornpatra Areeruk

Background: Sedation for colonoscopy with propofol is often associated with decreasing in arterial blood pressure. Dexmedetomidine is a sedative drug with a highly selective alpha2 adrenoreceptor agonist. The direct action on blood vessels causes vasoconstriction and a possible increase of blood pressure. This study evaluates dexmedetomidine on suppression of decrease in blood pressure is compared with propofol for sedation during colonoscopy. Method: Seventy patients with ASA physical status I-III were randomly allocated into two groups to receive either dexmedetomidine or propofol for elective colonoscopy under sedation. Group P patient received 0.5 mcg/kg fentanyl over 5 min, followed by 1 mg/kg propofol. Group D patients was received 1 mcg/kg dexmedetomidine with 0.5 mcg/kg fentanyl over 5 min, followed by 20 mg propofol. The 20 mg propofol was titrated as required to achieve the target BIS and sedation score. Standard monitorization were provided in both groups before sedation (baseline), start of sedation (time=0) and every 5 min intervals.