Bryden F M, McFarlane H, Tunstall M E, Ross J A
Department of Anaesthesia, Aberdeen Royal Hospitals NHS Trust, Aberdeen Royal Infirmary, UK.
Anaesthesia. 1997 Feb;52(2):173-5. doi: 10.1111/j.1365-2044.1997.16-az017.x.
Thirty-five patients who had undergone uncomplicated cardiac surgery were randomly allocated to receive either Entonox or isoflurane 0.25% in Entonox as inhalational analgesia for the removal of their two chest drains. The gases were presented premixed in high-pressure cylinders and were self-administered by means of a demand valve. The removal of the second drain was more painful than the first but that pain was better controlled by isoflurane 0.25% in Entonox than by Entonox alone.
