Omg, I so sorry to hear this. I just joined this web site cause I recently bought a husky, she is 3 month old now and her name is Bella. I also have a chihuahua that is 11 yrs old and he has congested heart failure and takes fluid pills, so it scares be to think his time is getting closer and closer, and I hate that, but he has giving us a wonderful 11yrs and counting.
I am so sorry. I think of both of you often and will continue to keep you in my prayers. Who knows, doctors aren't always right. My best wishes to Myles.