Document Detail

Oximeter performance: the influence of acquisition parameters.
MedLine Citation:
PMID:  12426267     Owner:  NLM     Status:  MEDLINE    
STUDY OBJECTIVE: This study was designed to determine whether different desaturation indexes (DIs) would be obtained in patients with sleep-disordered breathing by systematically altering two acquisition parameters: the recording setting and the display mode. DESIGN: Prospective clinical study. SETTING: Community sleep-disorders center. PATIENTS: The study included 75 patients who were suspected of having sleep-disordered breathing. INTERVENTIONS: Each patient had simultaneous pulse oxyhemoglobin saturation (SpO2) traces at three recording settings (3 s, 6 s, and 12 s) during the diagnostic phase of split-night polysomnography. On-line and memory displays of those data at each recording setting were obtained. DIs for > or = 3% desaturation events per hour were calculated for each of the six traces. RESULTS: The mean on-line DIs significantly differed from each other, with slower (longer) recording settings resulting in lower values than faster (shorter) settings. The memory DIs all significantly underestimated the on-line DIs. Pearson correlations ranged from 0.82 to 0.90 between the on-line/memory DI pairs, but Bland-Altman analysis detected disagreement at higher levels of disordered breathing. CONCLUSIONS: These findings confirm that significantly different SpO2 data are obtained at various acquisition options. The recording setting and display mode parameters should be disclosed in all reports employing oximetry with the fastest recording setting and on-line display mode preferable for case finding of sleep-disordered breathing.
David G Davila; Kathy C Richards; Buddy L Marshall; Patricia S O'Sullivan; Ty G Gregory; Valerie J Hernandez; Shirley I Rice
Related Documents :
18716887 - Investigation of pulse transit time characteristics during single and recurrent obstruc...
12092317 - Clinical presentation and definitions of sleep-related breathing disorders.
9628157 - Usefulness of arousal for the diagnosis of sleep breathing disorder.
8869137 - Behavioural and arousal-related influences on breathing in humans.
9566277 - Quantitative eeg effects of nicotine replacement by cigarette smoking.
3285977 - Measurement of optic nerve head pallor with a video-ophthalmograph and with computerize...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Chest     Volume:  122     ISSN:  0012-3692     ISO Abbreviation:  Chest     Publication Date:  2002 Nov 
Date Detail:
Created Date:  2002-11-11     Completed Date:  2002-12-30     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  0231335     Medline TA:  Chest     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1654-60     Citation Subset:  AIM; IM    
Sleep Disorders Center, Baptist Health-Medical Center-Little Rock, AR 72205-7299, USA.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Middle Aged
Oximetry / standards*
Oxygen / blood*,  metabolism
Prospective Studies
Reg. No./Substance:
Comment In:
Chest. 2003 Jun;123(6):2160; author reply 2160   [PMID:  12796211 ]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Cardiac Munchausen syndrome.
Next Document:  Implementation of an oxygen therapy clinic to manage users of long-term oxygen therapy.