What is the diastolic murmur grading scale?

What is the diastolic murmur grading scale?

Providers analyze heart murmurs based on their intensity. They may use a grading scale to measure the murmur’s volume, pitch and how long it lasts (duration). Providers grade diastolic heart murmurs on a scale of one through four, with one being the faintest and four being the loudest. They grade systolic murmurs on a scale of one through six, with one being the faintest murmur and six being the loudest.