How to Document Heart Murmur Grade
Document heart murmur intensity using a 1-6 grading scale for systolic murmurs and a 1-4 scale for diastolic murmurs, along with timing, quality, location, radiation, pitch, configuration, and duration. 1, 2, 3
Grading System
The traditional intensity grading system is:
Systolic Murmurs (Grade 1-6):
- Grade 1: Very faint, heard only with special effort in a quiet room
- Grade 2: Quiet but readily heard
- Grade 3: Moderately loud without a thrill
- Grade 4: Loud with a palpable thrill
- Grade 5: Very loud, heard with stethoscope partially off the chest, with thrill
- Grade 6: Heard with stethoscope entirely off the chest, with thrill
Diastolic Murmurs (Grade 1-4): Use a 1-4 scale with similar intensity descriptors 3
Complete Documentation Components
Beyond intensity grading, comprehensive murmur documentation must include 1, 2:
Timing in cardiac cycle:
- Systolic (holosystolic/pansystolic, midsystolic/ejection, early systolic, or late systolic)
- Diastolic (early, mid, or presystolic)
- Continuous
Configuration:
- Crescendo
- Decrescendo
- Crescendo-decrescendo (diamond-shaped)
- Plateau
Location: Where the murmur is heard loudest (e.g., apex, left sternal border, right upper sternal border)
Radiation: Where the sound travels (e.g., to neck, back, axilla)
Pitch: High, medium, or low frequency
Quality: Harsh, blowing, musical, rumbling
Duration: How long the murmur lasts within the cardiac cycle phase
Clinical Context
Diastolic murmurs virtually always represent pathological conditions and require further cardiac evaluation 2. Document these carefully as they mandate echocardiographic workup regardless of intensity.
For systolic murmurs, grade 3 or higher intensity warrants echocardiography to distinguish benign flow murmurs from pathologic lesions like aortic stenosis 2. Document response to dynamic maneuvers (Valsalva, standing, squatting, handgrip) as these help differentiate etiologies 2.
Documentation Example Format
A complete documentation might read: "Grade 3/6 harsh crescendo-decrescendo midsystolic murmur heard loudest at the right upper sternal border, radiating to the carotids, with decreased intensity during Valsalva maneuver."
This systematic approach ensures accurate communication between providers and guides appropriate diagnostic workup and management decisions.