文档介绍：睡眠呼吸暂停综合征【呼吸科】
睡眠呼吸暂停综合征 Sleep Apnea Syndrome
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Definition and Classification
Sleep Apnea
Hypopnea
Sleep Apnea Syndrome
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睡眠呼吸暂停系指睡眠中口和鼻气流均中断超过10秒以上。 Sleep apnea is a condition in which breathing stops for more than 10 seconds during sleep. 低通气指口鼻气流较正常气流降低50%以上，持续10秒以上，伴有4%的血氧饱和度下降。 a 50% reduction in thoracic-abdominal movement lasting for 10 s, associated with decreases SaO2≥3%
Definition
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Definition
睡眠呼吸暂停综合征指在每晚睡眠中呼吸暂停反复发作超过30次以上，或睡眠呼吸暂停/低通气指数（index of apnea/ hypopnea, AHI）≥5。
Sleep apnea occurs 30 or more times during a 7-hour period of nocturnal sleep
AHI is an index used to assess the severity of sleep apnea based on the total number of complete cessations (apnea) and partial obstructions (hypopnea) of breathing occurring per hour of sleep.
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Obstructive Sleep Apnea Syndrome（OSAS） 阻塞性睡眠呼吸暂停综合征
表现为睡眠中口鼻气流中断，而胸腹呼吸运动仍存在；air stops flowing through the nose and mouth, but thoracic and abdominal breathing efforts are uninterrupted.
临床上最多见。
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Central Sleep Apnea Syndrome (CSAS) 中枢性睡眠呼吸暂停综合征
呼吸暂停时，胸腹运动同时消失；both oral breathing and thoracic-abdominal breathing efforts are simultaneously interrupted
单纯CSAS较少见，不超过10%；
可与OSAS同时存在。
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Mixed Sleep Apnea Syndrome (MSAS) 混合性睡眠呼吸暂停综合征
OSAS与CSAS混合存在。
Usually， a brief period of central apnea is followed by a longer period of obstructive apnea
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呼吸气流图
OSAS
CSAS
MSAS
Sleep Hypopnae
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Epidemiology of SAS 流行病学
SAS的发病率：美国 4%
上海 %
其中男性为女性的4倍
国内患者约为5千万
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