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Tim occurrence of vomiting in the post-operative period has been one of the most c6nstantly observed complicatmns of the anaesthetac era. This complication is usually simply annoying and unpleasant, although occasionally the patient may in this manner lose sufficient fluid and electrolyte to prejudice his recovery. Many of the causes remain obscure and it has been for generations the hope of anaesthetasts, surgeons and patients alike that this complication of the postoperative period might be eliminaied, or abated. Each new anaesthetic agent and techmque has been carefully evaluated for its ififluence in this respect. Despite all such research and evaluation, vomiting has remained a common and unpleasant feature of the post-operatave period an a significant proportion of surgical patients Lee (1) states that vomiting may be influenced by one or more of the following factors: (a) anaesthetic agent and techt~tque (b) type of patient (e) condition

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