Abstract:
:A potentially useful method to monitor respiratory mechanics in artificially ventilated patients consists of analyzing the relationship between tracheal pressure (P), lung volume (V), and gas flow (V) by multiple linear regression (MLR) using a suitable model. Contrary to other methods, it does not require any particular flow waveform and, therefore, may be used with any ventilator. This approach was evaluated in three neonates and seven young children admitted into an intensive care unit for respiratory disorders of various etiologies. P and V were measured and digitized at a sampling rate of 40 Hz for periods of 20-48 s. After correction of P for the non-linear resistance of the endotracheal tube, the data were first analyzed with the usual linear monoalveolar model: P = PO + E.V + R.V where E and R are total respiratory elastance and resistance, and PO is the static recoil pressure at end-expiration. A good fit of the model to the data was seen in five of ten children. PO, E, and R were reproducible within cycles, and consistent with the patient's age and condition; the data obtained with two ventilatory modes were highly correlated. In the five instances in which the simple model did not fit the data well, they were reanalyzed with more sophisticated models allowing for mechanical non-homogeneity or for non-linearity of R or E. While several models substantially improved the fit, physiologically meaningful results were only obtained when R was allowed to change with lung volume. We conclude that the MLR method is adequate to monitor respiratory mechanics, even when the usual model is inadequate.
journal_name
Pediatr Pulmonoljournal_title
Pediatric pulmonologyauthors
Rousselot JM,Peslin R,Duvivier Cdoi
10.1002/ppul.1950130307subject
Has Abstractpub_date
1992-07-01 00:00:00pages
161-8issue
3eissn
8755-6863issn
1099-0496journal_volume
13pub_type
杂志文章abstract::Respiratory symptoms, atopy, and bronchial reactivity were measured in primary school children living in Lake Munmorah (LM), a coastal town near two power stations, and in Nelson Bay (NB), a coastal town free from any possible major sources of outdoor air pollution. A prevalence survey and longitudinal follow-up study...
journal_title:Pediatric pulmonology
pub_type: 评论,杂志文章
doi:10.1002/ppul.1950110209
更新日期:1991-01-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章,评审
doi:10.1002/ppul.23245
更新日期:2015-10-01 00:00:00
abstract:OBJECTIVE:To carry out a cost-effectiveness analysis of omitting chest radiography in the diagnosis of infant bronchiolitis. HYPOTHESIS:Omitting chest radiographs in the diagnosis of typical bronchiolitis was expected to reduce costs without adversely affecting the detection rate of alternate diseases. STUDY DESIGN:A...
journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20948
更新日期:2009-02-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20442
更新日期:2006-12-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.25240
更新日期:2020-12-31 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/ppul.1040
更新日期:2001-04-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.1950200210
更新日期:1995-08-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.22593
更新日期:2013-03-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.23911
更新日期:2018-02-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.20919
更新日期:2008-11-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.23636
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
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更新日期:1995-07-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.23079
更新日期:2015-02-01 00:00:00
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pub_type: 杂志文章
doi:10.1002/ppul.1950040204
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journal_title:Pediatric pulmonology
pub_type: 临床试验,杂志文章
doi:10.1002/ppul.20129
更新日期:2005-01-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.22561
更新日期:2012-10-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
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pub_type: 杂志文章
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pub_type: 杂志文章
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更新日期:2000-02-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 临床试验,杂志文章
doi:10.1002/1099-0496(200009)30:3<215::aid-ppul6>3.0.c
更新日期:2000-09-01 00:00:00
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pub_type: 杂志文章
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更新日期:2018-11-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 临床试验,杂志文章,随机对照试验
doi:10.1002/(sici)1099-0496(199703)23:3<212::aid-ppul7
更新日期:1997-03-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章,评审
doi:10.1002/ppul.1159
更新日期:2001-12-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 临床试验,杂志文章,多中心研究,随机对照试验
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更新日期:1996-07-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
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更新日期:2015-01-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.1950110107
更新日期:1991-01-01 00:00:00
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journal_title:Pediatric pulmonology
pub_type: 杂志文章
doi:10.1002/ppul.10303
更新日期:2003-07-01 00:00:00