A narrowing anywhere in the breathing "pipe" that leads to the lungs causes shortness of breath, typically with harsh inspiratory noise on exertion. Such a narrowing can follow injury, intubation, cancer treatment, auto-immune disorders, etc. 

It is possible to gain an immediate understanding of the magnitude of the airway narrowing within minutes by using a simple test "graded" with one's ears. The severity of the problem can be understood before any examination or X-ray evaluation. Dr. Bastian explains...

If you would like to have an educational / informational Zoom call with Dr. Robert Bastian please contact us at [email protected]. Learn more: https://laryngopedia.com/video-conver...
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CHAPTERS
0:00 Introduction
1:32 Images of the Larynx
1:45 Rapid inspiration test
1:59 Audio examples of different airways
2:53 Tracheal stenosis
3:04 Looking inside the throat
3:40 Sharing the airway with a scope
4:48 Conclusion