抽象
的静电荷敏感床(SCSB)是用于检测睡眠呼吸暂停的一个简单的非侵入性和设备。除了呼吸暂停或低通气发作,重打鼾者通常存在与在SCSB高频尖峰的发作。这些尖峰事件已声称睡眠期间来表示局部上气道阻塞,但它们的外观的机制是未知的。我们的实验呼吸挑战过程中研究了SCSB扣球中醒科现象。一名女性和五个男性志愿者进行了研究,同时在缺氧,高碳酸血症和吸气和呼气装载自由呼吸。氧饱和度,呼气末二氧化碳张力,每分钟通气量,食管压力,心电图活性(ECG),血压和SCSB信号进行监测。在自由呼吸,所述SCSB高频信号由具有密切的时间关系与心动周期低振幅络合物。在呼吸挑战,出现扣球。这些尖峰显示心动周期没有时间关系,但是是有时间连接到吸气或呼气的发作。尖峰幅度与呼吸频率相关(R 2 = 0.59; P <0.005)和变化食管压力(R2 = 0.57; P <0.005)。 We conclude that during quiet, unobstructed breathing the static charge sensitive bed high frequency signal represents cardiac activity (ballistocardiogram), whereas during high-drive breathing high frequency spikes are produced. These spikes are respiratory in origin and are likely to represent fast components of respiratory movements. Our results support the use of static charge sensitive bed spiking as a noninvasive measure of breathing stimulation.