Related Experiment Video
Updated: May 22, 2026

Real-Time Cardiac Mapping with a Noninvasive Imageless Electrocardiographic Imaging System
Published on: April 11, 2025
Evaluation of the electrocardiogram in identifying and quantifying lateral involvement in nonanterior wall infarction
Kirian van der Weg1, Sebastiaan C A M Bekkers, Bjorn Winkens
1Maastricht University, AZ Maastricht, The Netherlands. kirian.vander.weg@mumc.nl
Purpose:
The objective of this study was to assess the involvement and extent of lateral wall myocardial infarction (MI) in patients with a first nonanterior wall MI, as reflected by changes in precordial leads. Delayed enhancement cardiac magnetic resonance imaging was used as a gold standard to localize and quantify myocardial scar tissue.
Methods:
Electrocardiogram and cardiac magnetic resonance were studied in 56 patients. Areas involved were related to QRS changes in precordial leads.
Results:
Significant correlations were found between lateral wall involvement and R waves in V(1) and V(6) (P = 0.009-0.022). For patients with circumflex branch occlusions, the MI size of the apical and lateral segments correlated strongly with the characteristics of R waves in V(1) and V(2) (P = 0.001-0.034).
Conclusions:
Tall and broad R waves in V(1) reflect lateral wall MI, especially in circumflex occlusions.
More Related Videos
08:10Estimating Bilateral Atrial Function by Cardiovascular Magnetic Resonance Feature Tracking in Patients with Paroxysmal Atrial Fibrillation
Published on: July 20, 2022
11:13Quantification of Mouse Heart Left Ventricular Function, Myocardial Strain, and Hemodynamic Forces by Cardiovascular Magnetic Resonance Imaging
Published on: May 24, 2021
Related Concept Videos
Imaging Studies for Cardiovascular System IV: CMRI
Acute Coronary Syndrome III: Diagnostic Studies
Electrocardiogram
Three major waveforms are present in a typical ECG recording: the P wave, the QRS complex, and the T...