Detection of silent myocardial ischemia patients by the spatial velocity electrocardiogram.
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.
Sasaki
A
A
The Second Department of Internal Medicine, Tokyo Medical University, Japan.
Arai
T
T
Shigeta
H
H
Ibukiyama
C
C
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