What are sleep disorders?

Sleep breathing diseases are mainly divided into common apnea, obstructive sleep apnea, central sleep apnea, mixed sleep apnea, hypopnea and micro-arousal. Generally, apnea refers to the cessation of oral and nasal airflow for more than 10 seconds during sleep; hypopnea refers to a decrease in oral and nasal airflow by ≥30% compared with the baseline level during sleep, and a decrease in arterial blood oxygen saturation by ≥4% for a duration of ≥10 seconds. Obstructive sleep apnea-hypopnea syndrome is the most common sleep disorder.

Obstructive Sleep Apnea Hypopnea Syndrome (OSAHS), also known as Obstructive Sleep Apnea (OSA), refers to patients with repeated apnea and hypopnea during sleep. Clinical manifestations include snoring, loud and irregular snoring, suffocation or waking up at night, sleep disorders, drowsiness during the day, memory loss, and in severe cases, cognitive function decline and behavioral abnormalities. The main risk or predisposing factors include obesity, age, gender, upper airway anatomy abnormalities, family history of OSA, poor lifestyle, smoking, etc. It affects people of all ages, including men and women. It is estimated that 1 – 6% of the world’s adult population suffers from OSA.