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Published on: December 6, 2016
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Obstructive sleep apnea in a referral population in India
Ajit Vigg1, Avanti Vigg, Arul Vigg
1Department of Pulmonary Medicine, Apollo Hospitals, Hyderabad, India. ajitvigg@hd1.vsnl.net.in
Sleep & Breathing = Schlaf & Atmung
|January 8, 2004
Summary
This study found that a large proportion of patients in South India have moderate to severe obstructive sleep apnea (OSA). Computed tomography (CT) cephalometry revealed a significantly larger tongue base area in OSA patients, correlating with the condition.
Area of Science:
- Sleep Medicine
- Radiology
- Cardiology
Background:
- Limited research exists on obstructive sleep apnea (OSA) in the Asian subcontinent.
- OSA is a significant health concern with potential cardiovascular implications.
Purpose of the Study:
- To describe obstructive sleep apnea (OSA) in a South Indian referral population.
- To evaluate the utility of computed tomography (CT) cephalometry in diagnosing OSA.
Main Methods:
- Retrospective case series of 880 patients suspected of OSA.
- Polysomnography (PSG) for OSA diagnosis and CT cephalometry for anatomical assessment.
- Analysis included apnea-hypopnea index (AHI), sleep efficiency, REM sleep, oxygen saturation, Epworth Sleepiness Scale (ESS), and CT measurements.
Main Results:
- 600 patients underwent CT cephalometry; 68% had OSA.
- Mean AHI was 27.93, indicating moderate to severe OSA in most patients.
- Tongue base area (TBA) was significantly larger in OSA patients (1032.8 mm²) compared to controls (561.1 mm²).
- Hypertension was prevalent in 80% of OSA patients.
Conclusions:
- Moderate to severe OSA is common in suspected cases in South India.
- CT cephalometry, particularly TBA measurement, is a valuable tool for OSA assessment.
- Hypertension frequently coexists with OSA in this population.
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