title: Detection of silent myocardial ischemia patients by the spatial velocity electrocardiogram.
abstract: 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.
authors.affiliation: The Second Department of Internal Medicine, Tokyo Medical University, Japan.
authors.forename: A
authors.initials: A
authors.lastname: Sasaki
authors.forename: T
authors.initials: T
authors.lastname: Arai
authors.forename: H
authors.initials: H
authors.lastname: Shigeta
authors.forename: C
authors.initials: C
authors.lastname: Ibukiyama
mesh_terms: D000368:Aged; D000787:Angina Pectoris / Q000175:diagnosis*; D017023:Coronary Angiography; D016757:Death, Sudden, Cardiac / Q000209:etiology / Q000517:prevention & control; D004562:Electrocardiography; D015716:Electrocardiography, Ambulatory; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D017202:Myocardial Ischemia / Q000175:diagnosis*; D012307:Risk Factors; D012815:Signal Processing, Computer-Assisted