Join Date: Aug 2008
Location: Albuquerque, NM
LOL Don't you LOVE those medical texts that turn you into a hypochondriac? I was SUCH a horrible psychology student...
Roaring is typically where half of the larynx is paralyzed. When normal horses start breathing hard (during exercise, for example), their larynx expands equally to allow more air into their lungs. When they are suffering from larynx hemiparalysis, the paralyzed side actually collapses into airway. This then pushes the vocal chords in the way, which is why you can hear the roar.
Scout, an OTTB that I had high hopes for, had a really bad roar to the point where it affected his air intake, and therefore his athleticism. I had him scoped and the vet let me look at his paralyzed airway. It was pretty cool!!!! (well, cool to see but crappy that I couldn't turn him into an eventing horse and had a really difficult decision ahead of me) Because of him, I know WAY too much about this condition.
BACK to my hypochondriac tendencies - when I got Cirrus, he started snorting and I immediately thought "Oh my God, I got another roarer!!!" I nearly had a panic attack....lol