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  • Title: Comparison of electrocardiograms recorded with standard leads and derived from the vectorcardiographic frank leads in high risk patients.
    Author: Gannedahl PE, Ljungqvist OH, Lundin P, Edner M.
    Journal: Intensive Care Med; 1997 Oct; 23(10):1049-55. PubMed ID: 9407240.
    Abstract:
    Dynamic vectorcardiography (VCG) is increasingly employed for ischaemia monitoring with the use of a computerized method for recording and on-line analysis by the calculation of trend parameters. To elucidate how well the derived electrocardiogram (dECG), calculated from the VCG, compares with the simultaneously registered standard ECG (sECG), dECGs from 17 postoperative cardiac-risk patients and 36 subjects with acute myocardial infarction (AMI) were compared to sECGs, both quantitatively in leads II, III, V2 and V5 and qualitatively. Despite small, but some significant differences, mainly in the amplitudes of precordial leads, the qualitative interpretation by two independent cardiologists showed good agreement between the methods (kappa = 0.72 and 0.67, respectively) for the diagnosis of AMI/ischaemia. The dECG seems to be reliable and can be used clinically in these groups of patients during VCG recordings.
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