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Men with type 2 diabetes need screening for sleep apnoea

Male patients aged 18-75 years with type 2 diabetes were divided into “high” and “low” risk for obstructive sleep apnoea on the basis of a validated questionnaire that asked about habitual snoring, witnessed apnoea, nocturnal choking, and daytime sleepiness; their blood pressure was measured and body mass index calculated. Of 929 men who responded fully, 528 (57%) were deemed high risk and 362 (39%) low risk; 39 (4%) men had already been diagnosed. Screening oximetry confirmed obstructive sleep apnoea in 33/124 (27%) patients from a sample of the high risk group and 15/116 (13%) of the low risk group. The researchers urge clinicians to screen those with type 2 diabetes by asking about risk factors and performing sleep studies when appropriate, especially if they have excessive daytime sleepiness.