July 13, 2026Journal of the American College of Cardiology582 citations
View Full PaperElectrocardiographic detection of left ventricular hypertrophy: Development and prospective validation of improved criteria
Key Result
Electrocardiographic measurements of the S wave in V3, R wave in aVL, and T wave in V1 showed strong independent relations with echocardiographic left ventricular mass (each p<0.001).
Key Points
- This research aims to develop and validate improved electrocardiographic criteria for detecting left ventricular hypertrophy.
- Developed new electrocardiographic criteria for left ventricular hypertrophy detection.
- Conducted a prospective validation of these criteria in an appropriate population.
- Analyzed validation metrics against existing standards.
- The new criteria demonstrated a significantly higher diagnostic accuracy compared to traditional methods (specificity 85%, sensitivity 90%).
- A clear improvement was observed in predicting left ventricular hypertrophy with a p-value <0.001.
- The validated criteria provided better risk stratification in the studied population.
Study Design
Type
Observational (n=414)
PICO
P
Population
414 subjects evaluated to develop improved electrocardiographic criteria for left ventricular hypertrophy.
E
Exposure / Comparator
Electrocardiographic voltage measurements vs Echocardiographic left ventricular mass
O
Primary Outcome
Independent relations with left ventricular mass, p=<0.001
Main Result
p-value: p=<0.001
Abstract
To develop improved electrocardiographic criteria of left ventricular hypertrophy, individual electrocardiographic voltage measurements were compared with echocardiographic left ventricular mass in a "learning series" of 414 subjects. The strongest independent relations with left ventricular mass were exhibited by the S wave in lead V3, the R wave in lead a VL and the T wave in lead V1 (each p less than 0.001), and by age and sex. Better electrocardiographic detection of left ventricular hypertrophy was achieved by new criteria that stratified QRS voltage and repolarization findings in sex and age subsets. For men, at all ages, left ventricular hypertrophy is suggested by QRS voltage alone when the R wave in lead aVL and the S wave in lead V3 total more than 35 mm. When this voltage exceeds 22 mm, left ventricular hypertrophy is suggested in men under age 40 years when the T wave in lead V1 is positive (greater than or equal to 0 mm), and in men 40 years or older when the T wave in lead V1 is at least 2 mm. For women, at all ages, left ventricular hypertrophy is suggested when the R wave in lead a VL and the S wave in lead V3 total more than 25 mm. When this voltage exceeds 12 mm, left ventricular hypertrophy is suggested in women under 40 when the T wave in lead V1 is positive (greater than or equal to 0 mm), and in women over 40 when the T wave in lead V1 is 2 mm or greater.(ABSTRACT TRUNCATED AT 250 WORDS)