%0 Journal Article %T Relation between the Severity of Obstructive Sleep Apnea and the Severity of Type 2 Diabetes Mellitus and Hypertension %A Safwat A. M. Eldaboosy %A Amgad Awad %A Hussain Alquraini %A Saber Abo Al Hassan %A Mohamed O. Nour %J Open Journal of Respiratory Diseases %P 37-48 %@ 2163-9418 %D 2021 %I Scientific Research Publishing %R 10.4236/ojrd.2021.112004 %X Background: Obstructive sleep apnea syndrome (OSAS) may promote hyperglycemia, insulin resistance, and hypertension (HTN). Purpose: To evaluate if there is a relationship between the severity of OSA and the severity of type 2 diabetes mellitus (T2DM) and HTN in our patients, aiming to understand and optimize the control for comorbidities. Materials and Methods: Patients referred for polysomnography (PSG) were retrospectively recruited during the period from October 2017 to August 2020. A STOP-BANG questionnaire formed eight questions was used to assess the risk of OSAS. We divided the patients into two groups; group 1, who have snoring without T2DM, and group 2, who have snoring with T2DM. PSG was completed for all subjects and data were collected for each patient including apnoea hypopnea index (AHI), mean arterial oxygen saturation (SaO2), and Nadir SaO2 recorded during PSG. Anthropometric data, medical history, and medications for T2DM (for group 2) and HTN and HbA1c were collected (for group 2). AHI was used to evaluate the severity of OSA and its relation to T2DM and HTN. Results: