Diagnosis of acute myocardial infarction in patients with chronic right bundle-branch block using standard 12-lead electrocardiogram compared with dynamic vector cardiography.
The aim of the study was to evaluate standard 12-lead electrocardiogram (ECG) criteria and to compare them with dynamic vector cardiography in patients with chronic right bundle-branch block for diagnosing acute myocardial infarction. We used standard 12-lead ECGs recorded on admission and after 12-24 h and compared them with dynamic vector cardiography with trend analysis during the first 12 h. In patients with right bundle-branch block, ST segment changes occurred in the same way as for patients with narrow QRS complexes. By adding 4 h of continuous vector cardiographic monitoring we were able to identify patients with acute myocardial infarction with a high diagnostic accuracy.
Clinical Experimental Research Laboratory, Department of Medicine, Sahlgrenska University Hospital/Ostra, Göteborg, Sweden.
P
P
Eriksson
G
G
Gunnarsson
M
M
Dellborg
D000368:Aged; D000369:Aged, 80 and over; D002037:Bundle-Branch Block / Q000150:complications*; D002908:Chronic Disease; D004562:Electrocardiography; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000150:complications / Q000175:diagnosis*; D012189:Retrospective Studies; D014672:Vectorcardiography