Why the study?
Does dynamic vector cardiography improve the diagnostic accuracy for acute myocardial infarction compared to standard 12-lead ECG in patients with chronic right bundle-branch block?
Does dynamic vector cardiography improve the diagnostic accuracy for acute myocardial infarction compared to standard 12-lead ECG in patients with chronic right bundle-branch block?
Adding 4 hours of continuous vector cardiographic monitoring to standard 12-lead ECG provides high diagnostic accuracy for acute myocardial infarction in patients with chronic right bundle-branch block.
May support vector cardiographic monitoring for AMI diagnosis in chronic RBBB; leaves open need for randomized validation before practice change.
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.
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Eriksson et al. (1998) studied this question.
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