Welcome to the board, kd&karmadad. I'm sorry you're going through such a scary time!
Do you have a video camera? Videotaping an episode to show your vet may help in diagnosing what's wrong with KD.
Also, if you don't get many replies you might want to start a new thread in the health forum. Sometimes members don't check the older threads. If you do
start a new thread, be sure to make the title descriptive
I hope it's nothing serious and KD is better soon!