THough I do not have CF I am currently in the hospital I had a severe asthma attack that led me to be intubated in the MICU at MUSC. Once I was extubated on Saturday, I had horrible largneal spasms and I have true vocal chord dysfuction, I had a videostroboscopy done where they went into my mouth and studied my vocal chords, I have it so bad that even though I was not in an attack, just under normal conditions my vocal chords collapse over my airway,
Scarry, for me so far the only thing that has helped is being intubated and then after that being put on Helium oxygen called helioox, it works great at getting through the swollen areas,
They are currently considering putting botox in my vocal chords to shrink them back to help me and also there has been talk of a stent in my throat,
We will see, right now I am still in th hospital and tehy are trying other ways to get my throat and chords to calm down]
It is scary as anything to have your total throat close up on you, way worse then a plain old asthma attack,,,
Good luck, the test itself didnt hurt, they stick the tube in your mouth, the tube has a camera on the front of the tip and then make you say a whole bunch of differrent sounds and words to see how your chords react.. Mine did bad, Hope yours does better, because the tools they taught nme to use when it happends do not work