Description: Segment 1 The narrator explains that this film will show the workings of the anaesthetic apparatus designed to deliver continuous flow of nitrous oxide and oxygen. A shot of the equipment shown in situ is followed by the flow of gases illustrated diagrammatically. Time start: 00:00:00:00 Time end: 00:04:40:10 Length: 00:04:40:10 Segment 2 Intertitle: Preparation of apparatus. All the equipment must be tested in advance gauges, flow meters and cylinders are all tested. This is shown in detail. The ether bottle should be refreshed every week - this is demonstrated. The ether bottle is warmed with a water jacket. The face mask is readied together with a rubber face harness. Time start: 00:04:40:10 Time end: 00:08:58:00 Length: 00:04:18:10 Segment 3 Intertitle: Induction. An intertitle explains that induction does not differ in any great detail to other methods and therefore this will not be dealt with in any depth. A patient arrives and his mouth is inspected. Intertitle: 1. The rapid induction of third stage anaesthesia using nitrous oxide alone. The apparatus is prepared to deliver nitrous oxide. The mask is lowered gradually onto the patient's face. The rebreathing bag is shown inflating. Time start: 00:08:58:00 Time end: 00:12:13:18 Length: 00:03:15:18 Segment 4 Intertitle: Induction. 2. The oxygen supply. The oxygen is turned on and the mask attached. Intertitle: 3. The addition of ether. The ether tap is turned on the bag indicates whether the patient is breathing regularly (a little every three breaths). There is laryngeal spasm and the anaesthetist pauses. Intertitle: Induction. 4. Light to moderate anaesthesia. The correct setting of the anaesthesia is shown, just sufficient to not cause cerebral damage. The harness is fastened and the patient's head turned to one side. This patient has an artifical airway inserted. The anaesthetist is now free to check the patient's condition such as his pulse etc. Time start: 00:12:13:18 Time end: 00:16:23:11 Length: 00:04:09:18 Segment 6 Intertitle: Maintenance 2. Cases requiring additional oxygen. A patient becomes cyonosed and more oxygen is given. Intertitle: Maintenance. 3. Tissue saturation. An operation is in progress - and it is noted that the patient needs less ether. Nitrous oxide alone keeps the patient anaesthetised. The patient's eyes are shown. Rolling intertitle explaining the role of the anaesthetic machine in keeping a basal level of anaesthesia. RFU. The End. Time start: 00:21:41:07 Time end: 00:24:13:10 Length: 00:02:32:03