Alterations in 3D vectorcardiographic loop length in acute myocardial infarction patients: a quantitative study

Cardiovascular diseases, especially acute myocardial infarction (AMI), are major global health concerns.The present study focuses on the QRS loop of the three-dimensional vectorcardiogram (VCG), a key indicator of ventricular electrical activities.By comparing healthy individuals and AMI patients, we found a notable decrease in QRS loop length among those with AMI measured using Euclidean point-to-point distances.This shortening suggests a clustering of vectors due to myocardial necrosis and disrupted electrical conduction.The findings emphasise the diagnostic value of QRS-based VCG analysis, offering insights into cardiac electrophysiology and highlighting its promise for early detection and predicting the prognosis of myocardial infarction.