Sheryl sorry to hear Kali is not well, I hope you get some answers soon. Our Charlie was diagnosed with a heart murmur 4 years ago at his anual checkup and booster it was another 2 years before he needed any treatment for that and now 2 years on with Vetmedin he is still doing OK although his heart murmur has gotten worse in the 2 years since he saw the cardio vet. But at 13y/o he is good for his age.