INFECTION WITH SENDAI VIRUS MEDIBLJOURNAL 383Preliminary surveys show that antibody to Sendai virus is not uncommon in Southern England.We wish to thank Dr. F. 0. MacCallum for his active help and advice in investigating the outbreak and in preparing this paper. We are also indebted to Dr. Preston, Deputy Director, and the staff of the Regional Transfusion Centre, Oxford, for supplying specimens of blood from local donors; and to the laboratory staff at the Memorial Hospital, Cirencester, for the collection and dispatch of specimens. REFERENCES Beale, A. J., McLeod, D. L., Stackiw, W., and Rhodes, A. J. (1956) A great deal has been written in praise of suxamethonium chloride (" scoline ") as a muscle relaxant in clinical anaesthesia, stressing its freedom from sideeffects such as bronchospasm, tachycardia, and fall in blood pressure. In many ways suxamethonium is the ideal relaxant: the rapid onset of complete relaxation followed by the quick return of full muscle power has made it very popular for endotracheal intubation, orthopaedic manipulation, and short abdominal operations. The ideal conditions produced for intubation have undoubtedly reduced the incidence of minor trauma to lips, tongue, and teeth, and of sore throat. One of its principal disadvantages, that of prolonged apnoea, has received so much attention as to obscure other sideeffects which produce considerable anaesthetic morbidity.It is the purpose of this paper to call attention to muscle pain and stiffness, in some cases of great severity, following the use of suxametbonium in patients who are discharged from hospital within 48 hours of operation.Churchill-Davidson (1954) first drew attention to muscle pains after suxamethonium administration, but this received little attention in the literature ; some writers denied that it even occurred. It has been noted that patients kept in bed for two to four days after operation rarely complain of post-operative muscle pains. In the present investigations dental patients discharged the day after operation were chosen. The investigations were designed to show the incidence of post-operative muscle pain, to make an estimate of its severity, and to try to find some simple means of preventing it.
TechniqueThe patients were premedicated with "omnopon" and scopolamine, or morphine and atropine, in doses appropriate to their age, weight, and physical condition. Induction was with 0.5-0.75 g. of thiopentone 5%, immediately followed by suxamethonium, 50-75 mg., and naso-tracheal intubation. Maintenance was with nitrous oxide, oxygen, and trichlorethylene. On the Nosworthy card was recorded the occupation of the patient, the dose of suxamethonium, and its speed of administration, divided into fast, medium, and slow. The resulting fasciculations were recorded as strong, moderate, and weak, and any particular muscle group strongly affected was noted. The patient's shoulders, chest, abdomen, and legs were bared in order to observe this accurately. The patients were seen the day after operation, when they were discharg...