Pharyngeal Cross-Sectional Area and Pharyngeal Compliance in Normal Males and Females

Respiration, 1998 Authors: J. Huang, H. Shen, M. Takahashi, T. Fukunaga, h. Toga, K. Takahashi, N. Ohya Conclusion: “In conclusion, we measured pharyngeal parameters in a large number of normal subjects using the acoustic reflection technique with air breathing. The pharyngeal compliance was greater in the men than in the women, and it increased with…

Is Area of the Retroglossal space Differently Affected by Posture in Apneic and Nonapneic Snorers?

European Respiratory Journal, 1995 Authors: A. Monnier, B. Lousis, F. Lofaso, l. Gilain, C. Van Surell, D. Touchard, A. Harf, J. Fredberg and D. Isabey Conclusion: “In conclusion, the present acoustic results do not reveal geometrical differences between apneic and nonapneic which could have been masked in previous acoustic studies. Above all, our results demonstrate…

Acoustic Reflectometry for Airway Measurements in Man: Implementation and Validation

Clinical Physics and Physiological Measurements, 1993 Authors: I. Marshall, N.J. Maran, S. Martin, M.A. Jan, J.E. Rimmington, J.J.K. Best, G.B. Drummond, and J.J. Douglas Conclusion: “The real-time display of airway areas is able to show the complex interdependencies of movement of the mouth, tongue, soft palate, naso-pharynx and glottis. These aspects have not been accessible…

Improvement in Upper Airway Function after Weight Loss in Patients with Obstructive Sleep Apnea

American Review of Respiratory Disease, 1988 Authors: I. Rubinstein, N. Colapinto, L. E. Rotstein, I. G. Brown, and V. Hoffstein Conclusion: “In summary, we have demonstrated that in overweight patients with OSA and abnormal pharyngeal mechanics, weight loss is associated with marked improvement in pharyngeal function, which may partly explain the observed improvement in sleep…

Pharyngeal Size in Snorers, Nonsnorers, and Patients with Obstructive Sleep Apnea

New England Journal of Medicine, 1986 Authors: T. D. Bradley, I. G. Brown, R. F. Grossman, N. Zamel, D. Martizez, E. A Phillipson, and V. Hoffstein Conclusion: “In summary, our findings indicate that patients with obstructive sleep apnea and snorers without apnea have abnormalities of the anatomical and mechanical features of the pharynx that distinguish…

Pharyngieal Compliance in Snoring Subjects with and without Obstructive Sleep Apnea

American Review of Respiratory Disease, 1985 Authors: I. G. Brown, T. D. Bradley, E. A. Phillipson, N. Zamel, and V. Hoffstein Conclusion: “Previous studies employing the acoustic reflection technique, X- ray cephalometry, fluoroscopy, and computerized tomography have shown reduced upper airway caliber in patients with OSA. Our results confirm these findings by demonstrating that patients…

Lung volume Dependence of Pharyngeal Cross-Sectional Area in Patients with Obstructive Sleep Apnea

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…

Acoustic Reflection Technology for Assessing Pharyngeal Size — faster, more specific, lower cost

American Review of Respiratory Disease, 1984 Authors: Rivlin, Hoffstein, Kalbfleisch, McNicholas, Zamel, Bryan Conclusion: “This study demonstrates that sitting awake patients with idiopathic OSA have significantly smaller cross sectional areas of the pharynx and the glottis than do subjects without OSA. This study also demonstrates and anatomic predisposition to the development of upper airway occlusion…

Upper Airway Morphology in Patients with Idiopathic Obstructive Sleep Apnea

American Review of Respiratory Disease, 1984 Authors: J. Rivlin, V. Hoffstein, J. Kalbfleisch, W. MnNicholas, N. Zamel, and A. C. Bryan Conclusion: “The acoustic technique is performed in the awake state and needs a minimal degree of patient cooperation. The good correlation between pharyngeal cross-sectional area and the severity of the disorder may give us…