Cathy, I've had Cavaliers since the 1980s (Puppers is the latest in a long line!) and had never heard of macrothrombocytopenia. Very interesting. Well, Puppers did a 10 day antibiotic course so no harm, no foul.
Poor little thing, I can feel her heart beating fast even at rest so I don't know how long the Vetmedin will buy us -- but she definitely feels much better. Here I thought I'd escaped MVD with Puppers
She is perched on a pillow watching me. My little princess. Thanks for all the kind words, I'll try to keep the board up to date on her status.