Left ventricular hypertrophy (LVH) refers to an increase in the size of myocardial fibers in the main cardiac pumping chamber.
While ventricular hypertrophy occurs naturally as a reaction to aerobic exercise and strength training, it is most frequently referred to as a pathological reaction to cardiovascular disease, or high blood pressure.
Such hypertrophy is usually the response to a chronic pressure or volume load.
The principal method to diagnose LVH is echocardiography, left ventricular wall is usually considered thickened when it is > 12mm; LVH is defined as an increase in left ventricular mass (LVM) > 115 g/m2 in men and > 95 g/m2 in women.
Sokolow-Lyon index (specificity > 85%, sensitivity 20%)
Cornell voltage criteria
Modified Cornell criteria
Other voltage criteria
Romhilt-Estes LVH Point Score System
- If the score equals 4, LVH is present with 30% to 54% sensitivity. If the score is greater than 5, LVH is present with 83% to 97% specificity.
Other ECG changes that may be seen in LVH
ECG 1 Signs of LV hypertrophy
ECG 2 Positive modified Cornell criteria in a patient with HOCM after unsuccessful septal alcohol ablation (RBBB, LAH)