Left Ventricular Hypertrophy

Question 1

LVH: Voltage criteria

Answer 1

Limb: 
- aVL: R > 11 mm
- aVF: R> 20 mm
- aVR: S > 14 mm
Precordial
- V4, V5, V6: R> 26
- V5 or V6 R wave + V1 S wave > 35 mm
-largest R + Largest S in precordial leads > 45 mm

Question 2

LV Strain

Answer 2

Lateral/ L sided leads: I, aVL +/- V5, V6

• ST depression
• TWI

Question 3

LVH: Additional changes

Answer 3

L atrial enlargement
L axis deviation
ST elevation V1-V3 (discordant to deep S wave)

Question 4

LVH Causes

Answer 4

HTN
Aortic Stenosis
Aortic Regurgitation
Mitral Regurgitation
Coarctation aorta
Hypertrophic cardiomyopathy

Question 5

LVH

Answer 5

voltage criteria aren’t diagnostic of LVH