CONDITION AND ITS EKG FEATURESEKG Left ventricular hypertrophy; systolic overload Abnormality of P wave due to left atrial enlargement Increased QRS duration Intrinsicoid deflection > 0.09 sec Incomplete Left bundle branch block (ILBBB) Loss of R wave in V1 and V2 Voltage criteria Limb leads Lead I: R > 15 mm or R > 18 mm with left axis deviation (LAD) Lead aVL: R > 12 mm or R > 16 mm with LAD Lead II or III: R > 25 mm Precordial leads V5 > 26 mm Sum of S wave in V2 and R wave in V5 > 36 mm V6 > V5 Orthogonal leads Transverse plane mean QRS vector > 20 mm Frontal plane mean QRS vector > 25 mm Secondary ST-T changes
