1 billion people suffer from OSA globally. Polysomnography (PSG), which is the gold standard investigation for diagnosing OSA, is not readily available. PSG collects only one night of data and recent studies have shown that one night of data may not be enough to establish […]

Obstructive Sleep Apnea (OSA) is defined as RDI/AHI>5/hr with symptoms or RDI/AHI>15/hr without symptoms. Apnea Hypopnea Index (AHI) is defined as number of apneas plus Hypopneas divided by total sleep time (TST). There are different hypopnea definitions published at different timelines- Source Year Criteria AASM […]