Abstract
Objective: Document the results of 100 consecutive DISE and investigate associations between PSG and DISE findings.
Method: Between June and August 2010, 100 consecutive patients, eligible for sleep surgery or MRA underwent a PSG and DISE. DISE findings were reported using the VOTE classification system; site, degree of airway narrowing, and configuration of obstruction were reported. Associations were analyzed between PSG results, patient characteristics and DISE findings.
Results: 82% suffered from OSA, 52% from positional OSA. 75% were found to have a multi-level obstruction, which was associated with a higher AHI value, as was a complete collapse and a tongue base collapse. A tongue base collapse or epiglottal collapse was associated with positional OSA. And lastly, a complete concentric collapse was associated with an increased BMI.
Conclusion: PSG is mandatory in the diagnostic work-up of OSA; DISE a valid addition. The results of this small scale study help us understand the pathogenesis of OSA and the various associations between PSG outcomes and DISE results, as well as assisting the sleep surgeon to tailor surgery for the patient.
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