Detection of silent myocardial ischemia patients by the spatial velocity electrocardiogram

• Published in: Am J Coll Cardiol Vol. 84; no. 9; pp. 1081 - 1083
• Main Authors: Sasaki, Akihiko, Arai, Tomio, Shigeta, Hiroshi, Ibukiyama, Chiharu
• Format: Journal Article
• Language: English
• Published: New York, NY Elsevier Inc 01.11.1999; Elsevier BV; Elsevier; Elsevier Limited
• Subjects: Aged; Angina Pectoris; Angina Pectoris - diagnosis; Biological and medical sciences; Cardiology; Cardiology. Vascular system; Cardiovascular disease; Coronary Angiography; Coronary heart disease; Death, Sudden, Cardiac; Death, Sudden, Cardiac - etiology; Death, Sudden, Cardiac - prevention & control; Electrocardiography; Electrocardiography, Ambulatory; Female; Heart; Humans; Male; Medical sciences; Middle Aged; Myocardial Ischemia; Myocardial Ischemia - diagnosis; Risk Factors; Signal Processing, Computer-Assisted; Human; Cardiovascular disease; Asymptomatic; Coronary heart disease; Myocardial disease; Vascular disease; Electrodiagnosis; Ischemia; T wave; Electrocardiography; Myocardium; Diagnosis; Technique
• ISSN: 0002-9149; 1879-1913
• DOI: 10.1016/S0002-9149(99)00503-2

This study was designed to detect patients with type I silent myocardial ischemia (SMI) at rest by assessing the symmetry of the electrocardiographic (ECG) T wave using the spatial velocity electrocardiogram (SVECG). In this study, the ECG T waves in patients with SMI were symmetric compared with those in normal subjects, and the the c/a ratio in the SVECG-T wave as the index of degree of symmetry of the ECG T wave enabled us to diagnose 73% of these patients; the c/a ratio in the SVECG T wave was a useful index for detecting patients with type I SMI at rest.