Hi again, , and thank you for responding with your own thoughts. From my experience, this type of High Frequency Chest Wall Oscillation (HFCWO), type of device, can work and provide dramatic improvement when used correctly for patients who are good candidates for its use. If the doctor feels that you are a good candidate - it may need an adjustment that is specific for your body type, condition and body frame. The vest should be properly sized (for each patient - You, in this case), and set correctly as to 'frequency in hertz' and 'pressure' settings. Between your physician, and the company staff (hopefully respiratory therapists), who adjust the device, you should begin to see a rather quick improvement.
Please do check back and let us know how this turns out for you.
Good luck!
Leon (site moderator COPD.net)