EKG Atlas-LVH 2

Criteria of diastolic(volume) overloading LVH

• Limb leads
  1. Lead I: R > 15 mm or R > 18 mm with left axis deviation (LAD)
  2. Lead aVL: R > 12 mm or R > 16 mm with LAD
  3. Lead II or III: R > 25 mm
• Precordial leads
  1. V5 > 26 mm
  2. Sum of S wave in V2 and R wave in V5 > 36 mm
  3. V6 > V5
• Orthogonal leads
  1. Transverse plane mean QRS vector > 20
  2. Frontal plane mean QRS vector > 25

III. Increased QRS duration

• Instrinsicoid deflection > .09 sec.
• Deep Q-waves in leads I, aVL, V5, and V6