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The demonstration was set up in the main foyer of the hospital yesterday as part of National Anaesthesia Day, which raises awareness of the process of sedation during operations.
Members of the public were able to try administering an anaesthetic to the mannequin using the machine, which was straight out of the operating theatre.
Dr Smith said the day was a chance to recognise what anaesthetists did and ease people's fears about not being in control of the anaesthesia process, which worried some people more than the actual surgery.
''People watch shows like Grey's Anatomy and become curious about what we do, so this is a chance for us to answer any questions people might have.''