Heart Murmur

 Hi Bernice and welcome to the forum; Enalepril is an ACE inhibitor and they're a pretty good class of drugs. Jessie takes an ACE inhibitor called Benazepril. She is almost 14 years old and has mild protein loss in her urine. The Benazepril has actually reduced that and she tolerates it quite well.

  I don't have any advice about heart murmurs but there are others that will post with good advice. Give your sweet girl some kisses for me.

My Billy lived for 3 years with a grade 3/4 murmur that was left over as a result of a disease he had.  Like you we monitored him twice a year and did x-rays to see how things went ... he was a very "old" 12 when I lost him -- not to any degrading of the heart condition -- he simply had a heart attack (which was likely caused by completely different circumstances).

Bottom line Bernice -- there are dogs who live their entire lives with a grade 3/4 murmur and live to be 12 and more.  You're doing what you can do to take care and that is huge!!

We had another dog who had a really badly enlarged heart and she lived with us 6 1/2 more years (and her heart was in BAD shape). She was on ferosemide and amitripaline and enalepril and a ton of herbs but she made it to 17+.

There are herbs and supplements you can choose to use if you want that may help.  Hawthorneberry and Co-Q-10 may help.  Talk to your vet, or you may wish to add a holistic vet to guide you (I'm not saying to leave your vet, only to get some additional wisdom from a holistic vet.)

With heart stuff you DO want them to get exercsie but not too much.

 One thing we found valuable was a wagon.  Bringing it along on a walk so that if the dog seems tired or begins to pant or cough, let them ride.  That way they get to "go" but don't get over-tired. 

But honestly -- the answer to your question is that with good care, dogs on heart meds can live a LONG LONG time.