Hi there, just seen this and wondered what has happened since? I have a 9 yr old gelding diagnosed with grade 5/6 murmur 3 years ago who is still going strong as a happy hacker..he didn't show signs of atrial fibrillation but was starting with early hypertension which has since appeared to...
Definitely definitely query the actions of the farrier in this case....had a similar issue with my tb mare last year, v flat front feet not much heel. 2 occasions of lameness after new shoes despite being with farrier who vet thought highly of (as did many other people in area). Different...