Related Experiment Video
Updated: Aug 5, 2026
Evaluation of Left Ventricular Structure and Function using 3D Echocardiography
Published on: October 28, 2020
Electrocardiographic Criteria for the Diagnosis of Left Ventricular Hypertrophy
Julio G Peguero1, Saberio Lo Presti2, Jorge Perez2
1Columbia University Division of Cardiology, Mount Sinai Medical Center, Miami Beach, Florida.
Insights
A new electrocardiogram (ECG) method combining S wave measurements significantly improves left ventricular hypertrophy (LVH) diagnosis sensitivity compared to existing criteria.
Area of Science:
- Cardiology
- Medical Diagnostics
- Biomedical Engineering
Background:
- Current electrocardiographic (ECG) criteria for left ventricular hypertrophy (LVH) exhibit limited diagnostic sensitivity.
- Accurate LVH diagnosis is crucial for managing cardiovascular health.
Purpose of the Study:
- To develop and validate a novel ECG-based method for enhanced LVH diagnosis.
- To improve the diagnostic performance of the electrocardiogram for LVH detection.
Main Methods:
- A new ECG criterion (SD + SV4) was developed, measuring the deepest S wave amplitude plus the S wave amplitude in lead V4.
- The proposed method was evaluated against established criteria (Cornell voltage, Sokolow-Lyon) using test and validation cohorts (total 216 patients).
- Echocardiography-derived left ventricular mass index served as the gold standard; Area Under the Curve (AUC) and McNemar tests were used for analysis.
Main Results:
- The SD + SV4 criterion demonstrated superior sensitivity (62%) compared to Cornell voltage (35%) for LVH diagnosis across both cohorts.
- The deepest S wave (SD) alone showed high accuracy (AUC: 0.80) as a single lead measurement.
- All tested criteria maintained high specificity (≥90%) with no significant differences observed.
Conclusions:
- The novel SD + SV4 ECG criteria significantly enhance sensitivity and overall accuracy for diagnosing LVH.
- This new method offers a more effective non-invasive tool for identifying left ventricular hypertrophy.
Background:
Current electrocardiographic (ECG) criteria for the diagnosis of left ventricular hypertrophy (LVH) have low sensitivity.
Objectives:
The goal of this study was to test a new method to improve the diagnostic performance of the electrocardiogram.
Methods:
The study was divided into 2 groups, a test and a validation cohort. In the test cohort, 94 patients were analyzed, including 47 with the diagnosis of hypertensive crisis and 47 with normal blood pressure at admission. Echocardiography was used to estimate the left ventricular mass index. Area under the curve (AUC) analysis was used for comparison of single and combined leads. The McNemar test was used to assess agreement among the ECG criteria against the left ventricular mass index. The proposed ECG criteria involved measuring the amplitude of the deepest S wave (SD) in any single lead and adding it to the S wave amplitude of lead V4 (SV4). Currently accepted LVH ECG criteria such as Cornell voltage and Sokolow-Lyon were used for comparison. The validation cohort consisted of 122 consecutive patients referred for an echocardiogram regardless of the admitting diagnosis.
Results:
The SD was the most accurate single lead measurement for the diagnosis of LVH (AUC: 0.80; p < 0.001). When both cohorts were analyzed, the SD + SV4 criteria outperformed Cornell voltage with a significantly higher sensitivity (62% [95% confidence interval [CI]: 50% to 72%] vs. 35% [95% CI: 24% to 46%]). The specificities of all the criteria were ≥90%, with no significant difference among them.
Conclusions:
The proposed criteria for the ECG diagnosis of LVH improved the sensitivity and overall accuracy of the test.
Related Concept Videos
01:29Electrocardiogram
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...
01:28Electrocardiogram Fundamentals
An electrocardiogram (ECG) is a diagnostic tool for identifying cardiac conditions such as arrhythmias, conduction abnormalities, and myocardial ischemia.
Definition
An electrocardiogram (ECG) visualizes the heart's electrical activity by tracing the electrical movement associated with each heartbeat on a graph or monitor. As the heart beats, an electrical wave passes through it, correlating with the cardiac cycle events.
Parts of an ECG
An ECG utilizes electrodes on the skin to...
01:23Mitral Stenosis II: Clinical features and Diagnostic Tests
01:22Aortic Regurgitation II: Clinical Features and Diagnostic Tests
01:30Heart Failure IV: Classification and Diagnostic Evaluation
01:29Cardiomyopathy III: Hypertrophic Cardiomyopathy