Acoustic Pharyngometry Measurement of Minimal Cross-Sectional Airway Area Is a Significant Independent Predictor of Moderate-To-Severe Obstructive Sleep Apnea
DETERMINATION OF THE CORRELATION BETWEEN THE SEVERITY OF OBSTRUCTIVE SLEEP APNEA AND PRIMARY HYPERTENSION BY USING ACOUSTIC PHARYNGOMETRY
Click to view the PDF Version Z.U.M.J.Vol.20; N.1; Jan; 2014 Samer Badee a , Naslshah Kazem a , Hesham Khalid b a Department of otorhinolaryngology, Faculty of medicine , Benha University, Egypt b Department of Cardiology, Faculty of medicine , Benha University, Egypt ABSTRACT Introduction: Obstructive sleep apnea…
Mandibular Advancement Achieved through a Stepped Mouthpiece Design Can Change the Size of the Upper Airways
Presented at Respiratory Drug Delivery 2010, Orlando, Florida April, 2010 Authors: Kurt Nikander, Ian Petherbridge, Eugene Scargerry, dirk Von Hollen, John Viviano, Henry Chrystyn Summary: “Maximal lung deposition of inhaled aerosols is important in the treatment of respiratory diseases. The upper airways are known to affect the deposition of aerosol in the lungs. The design…
Alterations in upper airway cross-sectional area in response to lower body positive pressure in healthy subjects
Thorax, 2007 Authors: S. Shiota, C. M. Ryan, K.L. Chiu, P. Ruttanaumpawan, J. Haight, M. Arzt, J. S. Floras, C. Chan and T. D. Bradley Conclusion: “In healthy subject, displacement of fluid from the legs by LBPP causes distension of the neck and narrowing of the UA lumen. Fluid displacement from the lower to the…
Oropharyngeal Dimensions in Adults: Effect of Ethnicity, Gender, and Sleep Apnea
Journal of Clinical Sleep Medicine, 2005 Authors: K. Monahan, H. L. Kirchner, S. Redline Conclusion: “We concluded that (1) acoustic pharyngometry identifies differences in upper airway characteristics based on gender, ethnicity, and SDB status and (2) novel parameters can assist in quantifying these pharyngeal phenotypes. The novel parameters can potentially facilitate quantitative, as an adjunct…
Assessing Orthotic Normalization of Pharyngeal Dynamics
Journal of Craniomandibular Practice, 2004 Author: J. S. Viviano, B.Sc., D.D.S. Conclusion: “Both non-invasive and accurate, acoustic reflectometry (AR) provides and objective measurement of the oral cavity and pharyngeal airway caudal to the velopharynx down to the glottis. Other advantages include ease of use and repeatability, inexpensive to perform, and high patient acceptance.” “Although video…
Comparison of Glottic Areas Measured by Acoustic Reflections vs. Computerized Tomography
Journal of Applied Physiology, 1998 Authors: A. D. D’Urzo, I. Rubinstein, V. G. Lawson, K. P. Vassal, A. S. Rebuck, A. S Slutsky, and V. Hoffstein Conclusion: “The acoustic reflection method is essentially a physiological tool, dedicated to performing only a single measurement, namely that of airway area. The major advantage of the acoustic reflections…
Objective evaluation of velopharyngeal function by acoustic reflection measurements
Mund Kiefer GesichtsChirurgie, 1998 Authors: M. Kunkel, U. Wahlmann, W. Wagner Introduction: “Today, acoustic rhinometry can be viewed as an accepted diagnostic tool, frequently used in the planning and follow-up of functional nasal surgery, as well as in the quantitative evaluation of allergic mucosal reactions. “Even for further peripheral airways, Jackson et al. reported that,…
Objective, Noninvasive Evaluation of Velopharyngeal Function in Cleft and Noncleft patients
Cleft Palate-Craniofacial journal, January 1998 Authors: M. Kunkel, U. Wahlmann, W. Wagner Conclusion: “Cleft palate and control patients showed overlapping ranges of velopharyngeal mobility, indicating that muscle function cannot be classified as normal or pathologic by a single acoustic measurement. An objective method of assessing velopharyngeal mobility may, however, provide a diagnostic tool for monitoring…
Airway Dimensions in the Human Determined by Non-invasive Acoustic Imaging
Study Draft to Bruno Louis at INSERM U.292, 1997 Authors: B. Louis, P. Drinker, G. M. Glass, D. Isabey and J. J. Fredberg Conclusion: “The acoustic reflection method is a powerful tool to study the physiopathological properties of the upper airways. It permits, at the bedside and in the clinical situation, an accurate non-invasive and…
Pulmonary Airway Area by the Two-microphone Acoustic Reflection Method
Journal of Applied Physiology, 1994 Authors: B. Louis, G. M. Glass, and J. J. Fredberg Conclusion: “In summary, we have shown that the two-microphone method permits accurate measurement of human pulmonary airway area of breathing subjects. We established a high-pass filter signal- processing method that lessened artifacts associated with nonrigidity. This is important because it…
Airway Area by Acoustic Reflection: The Two-Microphone Method
Journal of Biomechanical Engineering, 1993 Authors: B. Louis, G. Glass, B. Kresen, J. Fredberg Conclusion: “In summary, the principal findings of this report are as follows. 1) Areas inferred using the two-microphone method compared favorably with the standard single microphone approach and with water displacement methods. 2) We established a correction procedure that secured both…
The Acoustic Reflection Technique for Non-invasive Assessment of Upper Airway Area
European Respiratory Journal, 1991 Authors: V. Hoffstein, J. J. Fredberg Conclusion: “It is clear from the already accumulated evidence that the acoustic technique may become a valuable tool for studying the clinical and physiological properties of the upper airway. So far this technique is the only one which allows non-invasive, accurate, reproducible and inexpensive measurements…
Acoustic Reflectometry for Airway Measurement. Principles, Limitations and Previous Work
Clinical Physics and Physiological Measurement, 1991
Authors: I. Marshall, M. Rogers, and G. Drummond
Conclusion: “Acoustic pulse reflectometry is a relatively recent technique which allows the non-invasive measurement of human airways. The technique consists of guiding an acoustic impulse through the subject’s mouth and into the airway. Suitable analysis of the
resulting reflection (the