Acoustic Pharyngometry – A new method to facilitate oral appliance therapy
American Review of Respiratory Disease, 1984
Authors: V. Hoffstein, N. Zamel, and E. A. Phillipson
Conclusion: “We examined the relationship between lun volume and pharyngeal cross-sectional area (with acoustic reflection) in 9 obese patients with obstructive sleep apnea and 10 age-matched, obese subjects without sleep apnea. The results indicate that in obese patients with obstructive sleep apnea, pharyngeal cross- sectional area is abnormally small, and varies considerably with changes in lung volume. The beneficial effects of weight reduction in such patients may relate to the coincident increase in functional residual capacity, causing an increase in upper airway size.”
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