A pilot observation using ultrasonography and vowel articulation to investigate the influence of suspected obstructive sleep apnea on upper airway
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Summary
This summary is machine-generated.Ultrasonography and vowel articulation show promise for screening obstructive sleep apnea (OSA). This pilot study suggests acoustic analysis can monitor upper airway changes, potentially improving pre-anesthesia risk assessment for OSA patients.
Area Of Science
- Medical imaging and diagnostics
- Sleep medicine and respiratory disorders
- Acoustic analysis and machine learning
Background
- Current obstructive sleep apnea (OSA) screening relies on subjective questionnaires with limited specificity.
- These methods do not assess upper airway anatomy, crucial for intubation and surgical risk assessment.
- Anesthesia in undiagnosed OSA patients can lead to post-operative complications.
Purpose Of The Study
- To evaluate the utility of ultrasonography and vowel articulation in screening for obstructive sleep apnea (OSA).
- To investigate the influence of OSA risk factors on vowel articulation using ultrasonography and acoustic feature analysis.
- To explore the potential of machine learning models for estimating upper airway diameter from acoustic features.
Main Methods
- Recruited 18 individuals without OSA risk (control) and 13 with high OSA risk.
- Measured upper airway parasagittal anterior-posterior (PAP) and transverse diameters via ultrasonography during vowel pronunciation (/a/, /i/).
- Extracted 106 acoustic features from recorded vowel sounds and analyzed variations using two-way repeated measures ANOVA.
Main Results
- The variation in upper airway diameter from /i/ to /a/ was significantly smaller in the OSA group (∆12.8±5.3 mm) compared to the control group (∆22.5±3.9 mm, p<0.01).
- Several acoustic vowel features correlated with upper airway diameter variations.
- A machine learning model combining four estimation models with random forest achieved a 0.75 correlation coefficient between estimated and measured PAP diameter.
Conclusions
- Ultrasonography combined with vowel sound analysis demonstrates feasibility for monitoring upper airway diameter.
- Acoustic features of vowel sounds show potential for non-invasive OSA screening and risk assessment.
- This approach offers a potentially accessible imaging tool for evaluating the upper airway.
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