Obstructive sleep apnoea in adults

Case history

A 41-year-old obese man presents with loud chronic snoring and gasping episodes during sleep. His wife has witnessed episodic apnoea. He reports unrefreshing sleep, multiple awakenings from sleep, and morning headaches. He has excessive daytime sleepiness, which is interfering with his daily activities, and he narrowly avoided being involved in a motor vehicle accident. His memory is also affected. He has been treated for hypertension, gastro-oesophageal reflux, and type 2 diabetes.