The surges in hypoxaemia, hypercapnia and catecholamine associated with this disorder have now been implicated in development of hypertension, but the association between obstructive sleep apnoea and myocardial infarction, stroke and congestive heart failure is not proven. Continuous Positive Airway Pressure, the treatment of choice for obstructive sleep apnoea, reduces sleepiness and improves hypertension.