Obstructive Sleep Apnea Among Obese Patients With Type 2 Diabetes

OBJECTIVE - To assess the risk factors for the presence and severity of obstructive sleep apnea (OSA) among obese patients with type 2 diabetes. RESEARCH DESIGN AND METHODS - Unattended polysomnography was performed in 306 participants. RESULTS - Over 86% of participants had OSA with an apnea-hypopnea index (AHI) >= 5 events/h. The mean AHI was 20.5 +/- 16.8 events/h. A total of 30.5% of the participants had moderate OSA (1.5 <= AHI <30), and 22.6% had severe OSA (AHI >= 30). Waist circumference (odds ratio 1.1; 95% CL 1.0-1.1.; P = 0.03) was significantly related to the presence of OSA. Severe OSA was most likely in individuals with a higher BMI (odds ratio 1.1; 95% Cl 1..0-1.2; P = 0.03). CONCLUSIONS - Physicians should be particularly cognizant of the likelihood of OSA in obese patients with type 2 diabetes, especially among individuals with higher waist. circumference and BMI. Diabetes Care 32:1.0.1.7-1019, 2009