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| LVH. Using Cornell limb lead criteria of R aVL + S V3 > 2.8 mV (male). |
| Patient. |
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LVH. Using Cornell limb lead criteria of R aVL + S V3 > 2.8 mV (male). Patient.
Main criteria for LVH: Voltage criteria
Sensibility Specificity Accuracy Sokolow and Lyon, 1949. Limb lead - R I + S III > 2.5 mV 10.6 100 55 - R aVL 1.1 mV 10.6 100 55 - R aVF > 2.0 mV 1.3 99.5 50 - S aVR > 1.4 mV Precordial lead - R V5 or R V6 > 2.6 mV 25 98 62 - R V6 + S V2 > 3.5 mV 55.6 89.5 73 - Largest R + largest S > 4.5 mV 45 93 69 More recent literatures - S V1 + R V6 > 3.5 mV - S V2 + R V6 > 4.3 mV - S V1 > 2.4 mV - R V6 > 2.8 mV - R aVL > 1.3 mV Cornell, 1985 - R aVL + S V3 > 2.0 mV (Female) - R aVL + S V3 > 2.8 mV (Male) Onset of intrinsicoid deflection V5 or V6 = ).05-0.07 sec Supporting criteria - Onset of intrinsicoid deflection in V 5 or V6 > 0.04 sec - STT abnormality typical pattern of LV strain* * = 1. ST depression and T wave inversion in left lateral leads (tall R wave). 2. ST elevation and upright T wave in right precordial leads (deep S wave). 3. Asymmetrical T wave inversion. Romhilt-Estes point system, 1968 - Any limb lead R + S > 1.9 mV 3 - S V1 or S V2 > 2.9 mV 3 - R V5 or R V6 > 2.9 mV 3 - STT abnormality typical pattern of LV strain* 3 - P terminal force in V1 > 1 mV and > 0.04 msec 1 - Left axis deviation 1 - Intrinsicoid deflection in V5 or V6 > 4.9 msec 1 4 point = Probable LVH, 5 point or more = Definite LVH. Go to LVH menu / Go to QRS menu / Go to main menu