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中枢性睡眠呼吸暂停的诊断与治疗
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- Author:
- No author available
- Journal Title:
- National Medical Journal of China
- Issue:
- 18
- DOI:
- 10.3760/cma.j.issn.0376-2491.2012.18.003
- Key Word:
- No keyword available
Abstract： 中枢性睡眠呼吸暂停(CSA)是由于呼吸中枢驱动消失所引起的呼吸停顿,在常规睡眠多导图上表现为口鼻气流停止和无胸腹运动,持续时间＞10 s.当呼吸气流幅度较基础水平降低≥30％持续10 s以上,同时伴有血氧饱和度下降≥4％或微觉醒时,则这一事件定义为低通气[1].低通气由呼吸中枢驱动下降所致者为中枢性,由上气道部分阻塞所致者为阻塞性.呼吸暂停和低通气事件常同时存在,二者对机体的损害及导致的病理生理变化相似,临床上常通称为呼吸暂停低通气,并把平均每小时发生的呼吸暂停和低通气次数称为呼吸暂停低通气指数(AHI).许多情况下,阻塞性睡眠呼吸暂停(OSA)低通气与CSA低通气事件同时存在,如果50％以上事件是中枢性的,则诊断为CSA低通气综合征.
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