Although colonoscopy is a mildly painful procedure, the pain and the procedure itself are
distressful for most patients. This raises the attention for using different sedation
regimens aiming at maintaining optimal sedation level with maintained airway and stable
haemodynamics all through the procedure. The present study was scheduled to investigate the
sedative efficacy of dexmedetomedine versus propofol-remifentanil for outpatient colonoscopy.