Grading
| Grade | Description |
| Grade 1 | Faintest sound that can be detected |
| Grade 2 | Soft murmur that is readily detectable |
| Grade 3 | Louder than grade 2 but not associated with a palpable thrill |
| Grade 4 | Associated with a palpable thrill |
| Grade 5 | Audible with stethoscope placed lightly on the chest |
| Grade 6 | Audible with stethoscope off the chest |
