II. Quick Measures consistent with LVH

  1. (S in V1 or V2) + (R in V5 or V6) >35 mm (over age 35)
  2. R in AVL > 12 mm

III. Scott Criteria

  1. Limb Leads
    1. R in I added to S in III exceed 25 mm
    2. R in aVL exceeds 7.5 mm
    3. R in aVF exceeds 20 mm
    4. S in aVR exceeds 14 mm
  2. Chest Leads
    1. S in V1 (or V2) Added to R in V5 (or V6) exceed 35 mm
    2. R in V5 or V6 exceeds 26 mm
    3. R + S in any precordial lead exceeds 45 mm

IV. Estes Criteria

  1. Major criteria: 3 points if all present
    1. R or S in limb lead exceeds 19 mm
    2. S in V1 or V2 exceeds 29 mm
    3. R in V5 or V6 exceeds 30 mm
  2. Other Criteria
    1. Any ST shift without Digoxin: 3 points
    2. ST Strain pattern without Digoxin: 1 point
    3. Left Axis Deviation beyond -30 degrees: 2 points
    4. QRS wider than 0.09 seconds: 1 point
    5. Intrinsicoid deflection in V5-6 over 0.05: 1 point
    6. P-terminal force in V1 exceeds 0.04: 3 points
  3. Interpretation
    1. Left Ventricular Hypertrophy: 5 points
    2. Probable Left Ventricular Hypertrophy: 4 points

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