Background: The method of EchoCG estimation of left ventricular hypertrophy influences on the diagnostic value of electrocardiographic criteria.
The aim is to study sensitivity, specificity and correlation the main (Sokolow-Lyon, Cornell voltage, Cornell product) diagnostic criteria of LVH subject to Echo-LVH criteria with LV wall thickness and LVMM.
Design and method: The transthoracic EchoCG and 12-lead ECG were performed at 40 hypertensive patients.
Analysis 1. All patients were subdivided on the basis of LV wall thickness on two groups: the 1st (n=16) - without LVH and the 2nd (n=24) with LVH.
Analysis 2. LVMM All patients were subdivided according to recommendation of Penn-Convention on two groups: the 1st (n=10) - without LVH and the 2nd (n=30) with LVH.
Mann-Whithney test and Spearman test were used.
Results: There were not significant difference between all three indexes in examined groups (p>0.05). The Sokolow-Lyon indices had a sensitivity of 3,33-4,16% and a specificity of 100%; Cornel voltage indices had a sensitivity of 3,33-4,16% and a specificity of 100%, Cornel product indices had a sensitivity of 3,33-8,33% and a specificity of 100%.
Any reliable correlation between ECG indices and LV wall thickness were not found. Reliable correlation between Cornell voltage, Cornell product indices and LVMM was determined.
Conclusions: These criteria have a low diagnostic value for LVH. The characteristics of traditional ECG-LVH criteria are weakly depend on method for Echo-LVH estimation.
The Cornell voltage and Cornell product indices are more preferably in LVH diagnosis than Sokolow-Lyon index.