Volume : VII, Issue : II, February - 2017

STUDY TO VALIDATE FEASIBILITY OF OVERNIGHT PULSE OXIMETRY IN DIAGNOSIS OF OSA

Col Cds Katoch, Lt Col Brahamjit Singh

Abstract :

 BACKGROUND

                 Despite evidence that untreated OSA (obstructive sleep apnea) threatens public health, safety and productivity, current estimates reveal that majority of women and men with moderate to severe OSA remain undiagnosed. The gold standard for the diagnosis of OSA is overnight polysomnography (PSG). However this test has not been alluring for its cost and requirement of technical expertise. Many alternatives to PSG have been used for diagnosing OSA and specifically pulse oximetry, is under evaluation world over, because of its easy availability, lack of expertise required and economic factors. Objective of this study was to validate the feasibility of using overnight pulse oximetry in diagnosing OSA and then compå its sensitivity with PSG in diagnosing OSA.

 

MATERIAL AND METHODS

The study was a prospective observational study carried out at the Department of Pulmonary Medicine of tertiary care hospital. Total of 30 patients with suspected OSA based on history, Epworth Sleepiness Scale (ESS) and Berlin questionnaires (BQ) were studied. The patients were subjected to overnight “pulse oximetry”. The study included monitoring the apnea episodes and oxygen desaturation index (ODI) as defined by American Thoracic Society (ATS).These patients were then subjected to overnight PSG and the results were compared.

 

Results

Pulse oximetry revealed that, 3 had ODI less than 5/hour, 1 patient had ODI more than 5/hour and less than 10, 3 had ODI more than 10/hour and less than 15, and 23 had ODI more than 15/hour. When the results of oximetry were compared with PSG, it confirmed mild OSA in 4, moderate in 4, severe OSA in 19 and a normal study in 3.

 

Conclusion

 Clinical evaluation and overnight pulse oximetry together can be used as an efficient tool for diagnosing patients of severe OSAHS prior to subjecting them to sophisticated overnight polysomnography.

Keywords :

Article: Download PDF   DOI : 10.36106/ijar  

Cite This Article:

Col CDS Katoch, Lt Col Brahamjit Singh, STUDY TO VALIDATE FEASIBILITY OF OVERNIGHT PULSE OXIMETRY IN DIAGNOSIS OF OSA, INDIAN JOURNAL OF APPLIED RESEARCH : Volume‾7 | Issue‾2 | February‾2017

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