Number dogs examined: 68 dogs examined
Age range: < 1 year to 13 years, (46 of the 68 dogs were < 6 years)
Presence of murmur: 20 of the 68 dogs had evidence of a murmur
Murmur grades: grade 0/6 to 6/6 were observed
High grade murmurs: grade ≥4/6 murmurs were only present in dogs ≥ 8 years
Murmur grades in dogs of different ages:
Heart Testing 2014