Aim: To assess if six months of treatment with CPAP associated with conventional drug therapy, contribute to improved glycemic control in patients with type 2 diabetes and sleep apnea-hypopnea syndrome SAHS)

Main objective:

To assess the effect of 6 months of CPAP treatment associated with conventional drug therapy on glycemic control in patients with type 2 diabetes and sleep apnea-hypopnea syndrome (SAHS)

Inclusion Criteria:

• subjects 18 to 75 years old; diagnosis of type 2 diabetes mellitus; treatment with diet; oral antidiabetics or insulin stable in the last month; levels of HbA1c> 7.5% (if not supported clinic two controls to confirm with a difference not exceeding 0.5%); overweight or obese (BMI ≥ 25 kg/m2)

Exclusion Criteria:

• professional drivers, risk profession or respiratory failure; excessive daytime sleepiness is very high (Epworth scale> 18); morbid obesity (BMI> 40 kg/m2); CPAP treatment