Abstract：
OBJECTIVE:To compare automatic and manual analysis of neurological and respiratory variables obtained with the SomnoStar alpha 4100, a 16-channel polysomnographic system. PATIENTS AND METHOD:Twenty-eight patients suspected of obstructive sleep apnea-hypopnea syndrome were enrolled and given conventional polysomnographic tests. The order of automatic and manual reading of respiratory episodes, sleep stages, and arousals was randomized. We assessed agreement with the intraclass correlation coefficient and plotted standardized differences against standardized means, using the Bland-Altman method. RESULTS:Poor agreement was observed between the 2 types of analysis of sleep stages, especially for REM and deep sleep stages. Agreement was good for apneic episodes among the respiratory variables; however, automatic analysis underestimated hypopneas. If manual analysis is considered the gold standard at the apnea-hypopnea index cut point greater than 10, automatic analysis obtained a sensitivity of 55%, a specificity and positive predictive value of 100%, a negative predictive value of 47%, and an overall diagnostic yield of 67.8%. CONCLUSIONS:The automatic analysis of the SomnoStar 4100 system provides an unsatisfactory reading of sleep stages and respiratory episodes, especially hypopneas.
journal_name
Arch Bronconeumoljournal_title
Archivos de bronconeumologiaauthors
Barreiro B,Badosa G,Quintana S,Esteban L,Heredia JLdoi
10.1016/s0300-2896(03)75452-0keywords:
subject
Has Abstractpub_date
2003-12-01 00:00:00pages
544-8issue
12eissn
0300-2896issn
1579-2129pii
13054359journal_volume
39pub_type
临床试验,杂志文章,随机对照试验abstract：OBJECTIVE:To study the validity of quantitative cultures of tracheal aspirate (TA) in comparison with the plugged telescoping catheter (PTC) for the diagnosis of mechanical ventilator-associated pneumonia. METHOD:Prospective multicenter study enrolling patients undergoing mechanical ventilation for longer than 72 hour...
journal_title：Archivos de bronconeumologia
pub_type： 杂志文章,多中心研究
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abstract：INTRODUCTION:The socioeconomic impact of obstructive sleep apnea-hypopnea syndrome (OSAHS) is considerable. The aim of this study was to evaluate the cost-effectiveness of treating OSAHS with continuous positive airway pressure (CPAP) and the impact of CPAP compliance. METHODS:This was a retrospective, case-crossover ...
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journal_title：Archivos de bronconeumologia
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pub_type： 杂志文章,多中心研究
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pub_type： 杂志文章,评审
doi：
更新日期：2008-01-01 00:00:00
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pub_type： 杂志文章
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pub_type： 杂志文章
doi：10.1016/s0300-2896(15)30566-4
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pub_type： 杂志文章
doi：
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pub_type： 杂志文章
doi：10.1016/s1579-2129(07)60127-x
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pub_type： 杂志文章
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pub_type： 杂志文章,多中心研究,随机对照试验
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pub_type： 杂志文章,meta分析,评审
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更新日期：2007-01-01 00:00:00
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pub_type： 杂志文章,多中心研究
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更新日期：2014-01-01 00:00:00
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journal_title：Archivos de bronconeumologia
pub_type： 杂志文章
doi：
更新日期：1996-08-01 00:00:00
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