Table 1.

Heart murmur grading scheme

Grade 1	Very soft murmur heard only after very careful auscultation
Grade 2	Readily heard soft murmur
Grade 3	Moderately loud murmur not associated with palpable precordial thrill
Grade 4	Loud murmur, no or intermittent precordial thrill
Grade 5	Loud murmur associated with palpable precordial thrill; murmur not audible when stethoscope is lifted from thoracic wall
Grade 6	Loud murmur associated with palpable precordial thrill; heard when stethoscope is lifted from thoracic wall