Background-The British Thoracic Society report on the diagnosis and treatment of the sleep apnoea/hypopnoea syndrome (SAHS) suggests that, ifthe pulse oximetry baseline oxygen saturation is above 90%,

consultant physician W VAN'T HOFF, Ma, FRcp, consultant physician important in acromegaly, and it may be central, obstructive, or mixed. Polygraphic nocturnal monitoring is indicated to assess these patients properly.

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The case is presented as an unusual example of the benefit of tracheostomy during pregnancy in a patient with obstructive sleep apnoea syndrome.