New tracheal sound feature for apnoea analysis

被引：23
|
作者：
Kulkas, A. [1 ]
Huupponen, E. [1 ]
Virkkala, J. [1 ,2 ]
Tenhunen, M. [1 ]
Saastamoinen, A. [1 ]
Rauhala, E. [1 ,3 ]
Himanen, S. -L. [1 ]
机构：
[1] Pirkanmaa Hosp Dist, Med Imaging Ctr, Dept Clin Neurophysiol, Tampere, Finland
[2] Finnish Inst Occupat Hlth, Brain Work Res Ctr, Sleep Lab, Helsinki, Finland
[3] Satakunta Cent Hosp, Dept Clin Neurophysiol, Pori, Finland
来源：
MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING | 2009年 / 47卷 / 04期
关键词：
Tracheal sound; Respiratory activity; Cardiac activity; Discrete Fourier transform; Apnoea; OBSTRUCTIVE SLEEP-APNEA; ELECTROCARDIOGRAM; CLASSIFICATION; VALIDATION; RECORDINGS; DIAGNOSIS; SYSTEM; ADULTS;
D O I：
10.1007/s11517-009-0446-z
中图分类号：
TP39 [计算机的应用];
学科分类号：
081203 ; 0835 ;
摘要：
Sleep apnoea syndrome is common in the general population and is currently underdiagnosed. The aim of the present work was to develop a new tracheal sound feature for separation of apnoea events from non-apnoea time. Ten overnight recordings from apnoea patients containing 1,107 visually scored apnoea events totalling 7 h in duration and 72 h of non-apnoea time were included in the study. The feature was designed to describe the local spectral content of the sound signal. The median, maximum and mean smoothing of different time scales were compared in the feature extraction. The feature was designed to range from 0 to 1 irrespective of tracheal sound amplitudes. This constant range could offer application of the feature without patient-specific adjustments. The overall separation of feature values during apnoea events from non-apnoea time across all patients was good, reaching 80.8%. Due to the individual differences in tracheal sound signal amplitudes, developing amplitude-independent means for screening apnoea events is beneficial.
引用
收藏
页码：405 / 412
页数：8
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