SummaryFour observers estimated the weight and height of 38 patients who were lying covered on operating theatre trolleys. Regression analysis of the results was performed for each observer. The results showed marked variation in ability to assess these characteristics accurately.

A case of epidural analgesia in a parturient with neurofibromatosis (von Recklinghausen's disease) complicated by dural puncture and epidural haematoma is described and the management of the case is discussed. The case emphasizes the need for antenatal assessment of parturients with neurofibromatosis in order that the necessary investigations can be arranged and informed consent for analgesia and anaesthesia can be obtained.

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