My old dog with heart failure is struggling to breathe. What now?

Question

Mo is a Spanish mastiff 13 yr old. 140 lbs. He is in congest I've heart failure. He is on 40 mg. Of lasix. He takes 2 benadryl 3x a day. He is back to wheezing and unable to breathe. He fights for his breaths. He came home from vet on Dec 16. Seems worse. Should we give more benadryl or have him put down?

Stephanie Echols, DVM · Accepted Answer

I am sorry to hear Mo isn’t feeling well. I would not give him any more Benadryl as he is getting his max dose. I recommend having X-rays of his chest to determine if the lasix is helping. I would also discuss other medications to use for his heart failure. If those things aren’t helping, I would discuss his quality of life with your vet. Humane euthanasia may be in his best interest if medications aren’t helping him breathe. Good luck and kisses to Mo!

My old dog with heart failure is struggling to breathe. What now?

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