Sériès F, Marc I, Atton L
Unité de Recherche, Centre de Pneumologie de l'hôpital Laval, Université Laval, Québec, Canada.
Chest. 1993 Jun;103(6):1769-73. doi: 10.1378/chest.103.6.1769.
Snoring characteristics depend on several factors (sleep position, sleep architecture, breathing route) that can be influenced by changes in sleep habits and by the presence of the different probes and electrodes during polysomnographic studies. Our objective in this study was to compare the characteristics of snoring in the home environment with those of the sleep laboratory where most conventional studies are carried out. Fourteen nonapneic snorers were subjected to three night recording sessions within a two-week period, two at home and one in the sleep laboratory. To eliminate any sleep interference by the apparatus, breathing sounds were recorded with two microphones symmetrically placed on either side of the bed, the signal being preamplified and stored on a VHS hi-fi video recorder. The recorded signal was analyzed by using a spectrum analyzer (real time analyzer) and an equalizer to correct for acoustic resonances of the bedrooms. A snoring event was defined as a breathing sound with a sound pressure level (SPL) greater than 60 dB SPL. The snoring index (number/sleep hour) and the sound intensity of each event were automatically determined. The total sleep time (TST) was similar for the two home recordings (6.8 +/- 0.2 and 7.0 +/- 0.2 h, respectively, mean +/- SEM), but it was significantly shorter during the hospital study (6.0 +/- 0.3 h). The snoring indices obtained at home were 141.4 +/- 33.3 and 144.1 +/- 41.2/h and not statistically different from those obtained during the hospital recording (209.1 +/- 41.5/h). The percentage of TST spent above 60 dB SPL was significantly greater during the polysomnographic study (4.3 +/- 1.2 percent) than during the home recordings (2.5 +/- 0.7 and 2.9 +/- 1.0 percent, respectively). We conclude that the severity of snoring may be overestimated during polysomnographic recordings.
打鼾特征取决于几个因素（睡眠姿势、睡眠结构、呼吸途径），这些因素会受到睡眠习惯变化以及多导睡眠图研究期间不同探头和电极的存在的影响。我们在本研究中的目的是比较家庭环境中打鼾的特征与大多数传统研究所在的睡眠实验室中的打鼾特征。14名非呼吸暂停性打鼾者在两周内接受了三个夜间记录时段，其中两个在家中，一个在睡眠实验室。为了消除设备对睡眠的任何干扰，使用两个对称放置在床上两侧的麦克风记录呼吸声音，信号被前置放大并存储在VHS高保真录像机上。通过使用频谱分析仪（实时分析仪）和均衡器对卧室的声学共振进行校正，对记录的信号进行分析。打鼾事件被定义为声压级（SPL）大于60 dB SPL的呼吸声音。自动确定打鼾指数（次数/睡眠时间）和每个事件的声音强度。两次家庭记录的总睡眠时间（TST）相似（分别为6.8±0.2和7.0±0.2小时，平均值±标准误），但在医院研究期间明显较短（6.0±0.3小时）。在家中获得的打鼾指数分别为141.4±33.3和144.1±41.2/小时，与医院记录期间获得的打鼾指数（209.1±41.5/小时）无统计学差异。多导睡眠图研究期间，TST中声压级高于60 dB SPL的百分比（4.3±1.2%）明显高于家庭记录期间（分别为2.5±0.7%和2.9±1.0%）。我们得出结论，在多导睡眠图记录期间，打鼾的严重程度可能被高估。
