Refers to the disappearance or significant weakening of oral and nasal respiratory airflow during sleep (a decrease of >90% from the baseline), and the duration is ≥10 S.
It means that the airflow in the nose and mouth disappears, and the chest-abdominal breathing still exists. Apnea is caused by upper airway obstruction, but the respiratory drive function of the central nervous system is normal, and the breathing exercise instructions continue to be issued to excite the respiratory muscles, so the chest-abdominal breathing exercises still exist.
Refers to the disappearance of the nose and mouth airflow and the chest-abdominal breathing simultaneously. It is caused by the dysfunction of the central nervous system, the central nervous system cannot issue effective instructions, the breathing movement disappears, and the airflow of the nose and mouth stops.
It means that during one apnea, the beginning of the oral and nasal airflow disappears at the same time as the chest-abdominal breathing, and the chest-abdominal breathing occurs after a few seconds or tens of seconds, but there is still no oral and nasal airflow. That is, in the process of one apnea, central apnea first appears, and then obstructive apnea appears.
Did not meet the criteria for apnea or hypopnea, but had abnormal breathing effort of ≥10 S with related arousal.
Refers to the sum of the average number of apneas and hypopneas per hour.
The average number of apneas, hypopneas, and RERA events per hour.
During 7 hours of sleep per night, apnea and hypopnea recurred more than 30 times, or AHI ≥ 5 times/h. If possible, the RDI shall prevail. Apnea events are mainly obstructive, accompanied by symptoms such as snoring, sleep apnea, and daytime sleepiness.
Snoring and irregular snoring during night sleep, disturbance of breathing and sleep rhythm, repeated apnea and awakening, or the patient consciously suffocates, nocturia, morning headache, dry mouth, daytime sleepiness, memory loss, severe cases may occur Psychological, intellectual, and behavioral abnormalities; and may be combined with hypertension, coronary heart disease, arrhythmia, especially slow-fast arrhythmia, pulmonary heart disease, stroke, type 2 diabetes, insulin resistance, etc., and may have gradual weight gain.
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