Oximetry alone versus portable polygraphy for sleep apnea screening before bariatric surgery.

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Serval ID
serval:BIB_031F0254CD2B
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Oximetry alone versus portable polygraphy for sleep apnea screening before bariatric surgery.
Journal
Obesity Surgery
Author(s)
Malbois Maude, Giusti Vittorio, Suter Michel, Pellaton Cyril, Vodoz Jean-Frederic, Heinzer Raphael
ISSN
1708-0428[electronic], 0960-8923[linking]
Publication state
Published
Issued date
2010
Volume
20
Number
3
Pages
326-331
Language
english
Abstract
BACKGROUND: Screening for obstructive sleep apnea (OSA) is recommended as part of the preoperative assessment of obese patients scheduled for bariatric surgery. The objective of this study was to compare the sensitivity of oximetry alone versus portable polygraphy in the preoperative screening for OSA. METHODS: Polygraphy (type III portable monitor) and oximetry data recorded as part of the preoperative assessment before bariatric surgery from 68 consecutive patients were reviewed. We compared the sensitivity of 3% or 4% desaturation index (oximetry alone) with the apnea-hypopnea index (AHI; polygraphy) to diagnose OSA and classify the patients as normal (<10 events per hour), mild to moderate (10-30 events per hour), or severe (>30 events per hour). RESULTS: Using AHI, the prevalence of OSA (AHI > 10 per hour) was 57.4%: 16.2% of the patients were classified as severe, 41.2% as mild to moderate, and 42.6% as normal. Using 3% desaturation index, 22.1% were classified as severe, 47.1% as mild to moderate, and 30.9% as normal. With 4% desaturation index, 17.6% were classified as severe, 32.4% as mild, and 50% as normal. Overall, 3% desaturation index compared to AHI yielded a 95% negative predictive value to rule out OSA (AHI > 10 per hour) and a 100% sensitivity (0.73 positive predictive value) to detect severe OSA (AHI > 30 per hour). CONCLUSIONS: Using oximetry with 3% desaturation index as a screening tool for OSA could allow us to rule out significant OSA in almost a third of the patients and to detect patients with severe OSA. This cheap and widely available technique could accelerate preoperative work-up of these patients.
Keywords
Bariatric Surgery, Sleep Apnea, Type III Portable Monitor, Oximetry, Lung Volume, Preoperative Work-Up, Oxygen Desaturation, Morbid-Obesity, Airway, Guidelines, Management, Predictors, Diagnosis, Adults, CPAP
Pubmed
Web of science
Open Access
Yes
Create date
16/03/2010 11:55
Last modification date
01/10/2019 6:16
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