Detection of Positional Airway Obstruction in Neonates by Acoustic Reflection

American Jornal of Respiratory and Critical Care Medicine, 2000 Authors: P. Jarreau, B. Louis, L. Desfrere, P. W. Blanchard, D. Isabey, A. Harf, and G. Moriette Conclusion: “In conclusion, this study showed that the [Acoustic Reflection] method is an effective way to diagnose abutment of an ETT against the tracheal wall in infants. The method…

Acoustic Reflectometry and Endotracheal Intubation

Anesthesia and Analgesia, 1996

Authors: D. M. Eckmann, PhD, JD, R. Glassenberg, MD, N. Gavriely, DSc, MD

Conclusion: “As an adjunct to physical examination, acoustic reflection measurements may provide a simple method to identify difficult-
to-intubate and potential failed endotracheal intubation patients not identified by physical examination and relevant medical history alone.”

Using Acoustic Reflectometry to Determine Breathing Tube Position and Patency

Journal of Sound and Vibration, 1995 Authors: J. P. Mansfield and G. R. Wodicka Conclusion: “The acoustical guidance system developed in this study offers the potential to become an inexpensive and reliable clinical device.” “The Accuracy of distance estimation measured in the trachea to +/- 0.8 cm over the entire insertion range is adequate to…

Acoustic Method to Estimate the Longitudinal Area Profile of Endotracheal Tubes

American Journal of Respiratory Critical Care Medicine, 1994 Authors: C. Van Surell, B. Louis, F. Lofaso, L. Beydion, L. Brochard, A. Harf, J. Fredberg, and D. Isabey Conclusion: “This study has demonstrated the feasibility of the acoustic reflection method in the intensive care unit and that the decrease in hydraulic diameter and the change in…