Laryngeal spasm due to surgical stimuli. A surgical situation where a patient is in light anaesthesia, stridor occurs and the operation pauses until anaesthesia deepens, at this point the muscles will relax and the operation can commence. The patient's eyes are examined. Intertitle: 7. Excessive use of corneal reflex. If the eyes are examined often, this can damage the eye and lead to infection. At the end of the operation, liquid parafin or castor oil is dropped into the patient's eyes. Intertitle: Recapitulation. A summary, all the pitfalls can be avoided. A clear airway must be maintained. Anaesthesia is performed. Of note: nurses in the background wear tall white conical hats. The narrator reminds the audience that ether is explosive if mixed with oxygen. Intertitle: Ether anaesthesia in emergency. A GP removes anaesthetic apparatus from a bag and whilst on a house call tends to a patient in a bed. The next scenarios are firstly, a road accident and then in a tent during active service. RFU The End.