Grades of heart murmurs
Grade 1 - heard by specialist in optimum conditions Grade 2 - heard by non specialist in optimum conditions Grade 3 - Easily heard no thrill Grade 4 - loud murmur with thrill Grade 5 - very loud heard over wide area with thrill Grade 6 - Murmur heard without stephoscope Douglas G, Nicol F, Robertson C, Macleod's clinical examination 12th ed . Edinburgh, churchill livingstone, 2009.