Grades of heart murmurs

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  • 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. 

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