A Prospective Study of Clinical Scoring versus Polysomnography in Patients of Suspected Obstructive Sleep Apnea attending Pulmonary Medicine Department
Keywords:
Obstructive Sleep Apnea, Clinical Predictors, PolysomnographyAbstract
Introduction: Obstructive sleep apnea (OSA) is characterized by repetitive obstruction of the upper airway often resulting in oxygen desaturation and arousals from sleep. Itis associated with various adverse health consequences. Overnight polysomnography (PSG), thegold standard for its diagnosis is expensive and time consuming. Identification of predictors with high likelihood for OSA and then subjecting patient for polysomnography can help in effective resource utilization.Patients and Methods: This Institution based prospective study was conducted for 6 months in the Department of Pulmonary Medicine on patients suspected ofOSA.We assessed all the clinical predictors of OSA and then subjected patients to overnight gold standard polysomnography test to diagnose OSA. Using statistical test independent predictors of OSA, cut off values of continuous variables were determined to help in prioritizing patient for PSG testing.Result:Out of 50 enrolled patients, 44 patients have OSA and 6 do not have OSA. Parameters which had a significant association with OSA were symptoms associated, associated hypertension, neck circumference>40cm, presence of upper airway abnormality, Mallampati score >3, Epworth sleep score of >11, Berlin score with high risk category and STOP BANG score showing high risk. Subsequently cut off values were determined for prioritizing patients for PSG.Conclusion:Clinical predictors are helpful in selecting the patients for overnight polysomnography, which may be helpful in early diagnosis of OSA. They may also help to avoid few unnecessary polysomnographies and thus save time and resources.
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Copyright (c) 2021 Shrikant Hiremath, A.T. Leuva, Meghna M Patel, Hemareddy Betageri, Harsha Hanji
This work is licensed under a Creative Commons Attribution 4.0 International License.