Abstract:
:Nasal obstruction disturbs comfort during daytime, and sleep quality. Convenient objective assessment of nasal ventilation would be desirable. Therefore, we developed a technique for unobtrusive monitoring of bilateral nasal airflow. Nasal cannulae with separated left- and right-sided tubings were connected to two pressure transducers. Calibration tables were obtained by recording left and right nasal pressures during sequential unilateral nasal occlusion over a few breaths along with airflow by a flow meter attached to a mask. Based on these data, nasal pressures subsequently provided side-selective estimates of airflow without need for a mask. Accuracy of left and right nasal pressure derived airflows was evaluated by comparison of their sum to a flow meter in a bench model, in five volunteers at baseline and during unilateral nasal obstruction by histamine and in five patients during overnight sleep. In the model and volunteers, nasal pressure and flow meter derived flow agreed closely at baseline, and during partial nasal obstruction that altered left/right nasal flow ratios. In patients, nasal pressure derived tidal volumes accurately tracked flow meter estimates over >6 h (70 comparisons, bias -1%, limits of agreement +/-19%). The described method allows continuous, side-selective and unobtrusive monitoring of nasal ventilation for diagnostic evaluation and assessment of treatment effects.
journal_name
Physiol Measjournal_title
Physiological measurementauthors
Kohler M,Thurnheer R,Bloch KEdoi
10.1088/0967-3334/26/1/007subject
Has Abstractpub_date
2005-02-01 00:00:00pages
69-82issue
1eissn
0967-3334issn
1361-6579journal_volume
26pub_type
杂志文章abstract::Automatic sleep stage classification with cardiorespiratory signals has attracted increasing attention. In contrast to the traditional manual scoring based on polysomnography, these signals can be measured using advanced unobtrusive techniques that are currently available, promising the application for personal and co...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/36/10/2027
更新日期:2015-10-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/1361-6579/aa9047
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journal_title:Physiological measurement
pub_type: 临床试验,杂志文章
doi:10.1088/0967-3334/17/3/006
更新日期:1996-08-01 00:00:00
abstract::A nonlinear model predictive controller has been developed to maintain normoglycemia in subjects with type 1 diabetes during fasting conditions such as during overnight fast. The controller employs a compartment model, which represents the glucoregulatory system and includes submodels representing absorption of subcut...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/25/4/010
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更新日期:2018-02-28 00:00:00
abstract::Twenty-nine patients were monitored overnight for breathing distress patterns during postoperative analgesia. Nasal flow apnoea monitoring and pulse oximetry data were recorded at 50 Hz. Respiratory inductive plethysmography (RIP) tracked tidal volume (TV) thoracoabdominal motion, and supplemented the flow monitoring ...
journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/20/2/307
更新日期:1999-05-01 00:00:00
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journal_title:Physiological measurement
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更新日期:2009-12-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/1361-6579/aba07b
更新日期:2020-08-11 00:00:00
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doi:10.1088/0967-3334/34/2/223
更新日期:2013-02-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/28/6/005
更新日期:2007-06-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
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更新日期:2016-10-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/32/10/014
更新日期:2011-10-01 00:00:00
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更新日期:2015-01-01 00:00:00
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pub_type: 杂志文章,评审
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更新日期:2016-09-01 00:00:00
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更新日期:2016-07-01 00:00:00
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pub_type: 杂志文章,随机对照试验
doi:10.1088/0967-3334/36/9/1889
更新日期:2015-09-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/1361-6579/ab7cb5
更新日期:2020-04-20 00:00:00
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journal_title:Physiological measurement
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doi:10.1088/0967-3334/31/8/S06
更新日期:2010-08-01 00:00:00
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journal_title:Physiological measurement
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更新日期:2010-06-01 00:00:00
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更新日期:2018-09-27 00:00:00
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pub_type: 杂志文章
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更新日期:2016-12-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/36/8/1665
更新日期:2015-08-01 00:00:00
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journal_title:Physiological measurement
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更新日期:2002-05-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
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更新日期:2016-07-01 00:00:00
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pub_type: 杂志文章
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更新日期:2020-10-06 00:00:00
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更新日期:2015-03-01 00:00:00
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journal_title:Physiological measurement
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更新日期:2012-11-01 00:00:00
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journal_title:Physiological measurement
pub_type: 杂志文章
doi:10.1088/0967-3334/35/10/2135
更新日期:2014-10-01 00:00:00