Phase tracking of the breathing cycle in sleeping subjects by frequency analysis of acoustic data

被引：6

作者：

Alshaer, Hisham ^{[1
]}

Fernie, Geoffrey R. ^{[2
]}

Bradley, T. Douglas ^{[3
]}

机构：

[1] Univ Toronto, Inst Biomat & Biomed Engn, Toronto Rehabil Inst Sleep Res Lab, Toronto, ON M5G 2A2, Canada

[2] Toronto Rehabil Inst, Toronto, ON M5G 2A2, Canada

[3] Toronto Gen Hosp UHN, Toronto Rehabil Inst Sleep Res Lab, 9N-943,200 Elizabeth St, Toronto, ON M5G 2C4, Canada

来源：

INTERNATIONAL JOURNAL OF HEALTHCARE TECHNOLOGY AND MANAGEMENT | 2010年 / 11卷 / 03期

基金：

加拿大创新基金会; 加拿大健康研究院; 加拿大自然科学与工程研究理事会;

关键词：

breath sounds; respiratory monitoring; sleep; healthcare technology;

D O I：

10.1504/IJHTM.2010.034087

中图分类号：

R19 [保健组织与事业（卫生事业管理）];

学科分类号：

摘要：

We tested the hypothesis that the inspiratory and expiratory phases of breathing could be identified from breath sound recordings during sleep. Breath sounds were digitally recorded from 10 subjects during sleep. Frequency spectra of inspiration and expiration were determined. The ratio of frequency magnitude bins between 400-1000 Hz to frequency bins between 10-400 Hz was calculated for inspiration (Ri) and expiration (Re) for each breath. The Ri/Re ratio was significantly greater than the thresholds of 1.5 (p < 0.001) and 2-fold (p < 0.001). Breathing phases were correctly identified in 90% and 73% of cases using the 1.5 and 2.0 thresholds, respectively.

引用

页码：163 / 175

页数：13

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