Chewy has been doing well since I last contacted you (8/10) As soon as you've pointed out that he might have a CHF, I started to do research about it. I've been suspecting that also; but my vet never brought it up even when I described the exact symptoms that I mentioned to you.
Anyway, I did not give Chewy his complete prescription of meds; only Lasix (twice a day), Rimady, and pepcid. He did not vomit at all (till today, and it has been five days). I've realized that when he started to have upset stomach, he began to vomit for hours. The gagging, chocking, muscles spasm, drooling, and turned out to be symptoms of seizures. I've watched videos posted on You Tube about seizures in dogs; and what Chewy was having are exactly like the ones described in those videos.
I contacted my vet on Monday (8/12) he wanted to change the dog's prescriptions of the medicine and introduce new ones. I've decided not to follow his advice, because I believe that having too much medications can give him stomach upset that always lead to vomit and seizures. I just make sure that Chewy goes out to pee often (especially before bedtime) since he takes lots of liquid (and Lasix) during the day. I also notice that his coughs much less during at night.
I don't think seeing a cardiologist would enhance Chewy's life and perhaps he or she would add more medicines. However, I will have my first appointment with a holistic vet tomorrow who also does acupunture. My primary concern is to make Chewy comfortable while managing his CHF to the best I can and as long as Chewy is still have good quality of life. Overall, he still eats, walks, and barks, except with much slower pace. Thanks you.