a grade 3 murmur is just louder and easier to hear than a grade 2. the grade of a murmur is just a subjective comment on the intensity but not the quality of a murmur. murmurs can be blowing whistling high-pitched low-pitched etc. they can be systolic (first heart sound) or diastolic (second heart sound). murmurs are also judged by their location (mid-sternum precordium etc. ) and their ability to "transmit" (being heard in other chest locations).
what is a grade iii heart murmur? . what is the difference between a grade three and a grade 2 murmur? what would a grade 3 sound like with a stethoscope?