The Association between Obstructive Sleep Apnea and Glycated Haemoglobin A1c …

Background: Obstructive sleep apnea (OSA) is a chronic condition characterized by repetitive episodes of upper airway collapse, apnea, and arousal during sleep. OSA and type 2 diabetes mellitus (T2DM) are common comorbid conditions. Haemoglobin A1c (HbA1c) is an approximation of an individual’s average blood glucose level for the prior two to three months, and therefore is considered to b…