Estes Criteria for LVH

5 points or greater = definite
4 points = probable
ECG Criteria Points
Voltage Criteria (any of):
  1. R or S in limb leads >20 mm
  2. S in V1 or V2 > 30 mm
  3. R in V5 or V6 >30 mm
    4.
3 points
ST-T Abnormalities:
      Without digitalis
      With digitalis
3 points
 1 point
Left Atrial Enlargement in V1 3 points
Left axis deviation (LAD) 2 points
QRS duration 0.09 sec 1 point
Delayed intrinsicoid deflection in V5 or V6 (>0.05 sec)* 1 point

*intrinsicoid deflection is the duration from the beginning of the R wave to the peak of the R wave