Figure 2From: A multi-centre randomised double-blind placebo-controlled trial to evaluate the value of a single bolus intravenous alfentanil in CT colonography Modified Aldrete score [38]. The modified Adrete score was assessed at three time points: at arrival in the waiting room after the procedure, and at 30 and 60 minutes after study medication injection. The maximum Adrete score is 10.Back to article page