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Relationship between electrocardiographically and enzymatically estimated size in anterior myocardial infarction
[external].
1984 (English)In: Journal of Electrocardiology, ISSN 0022-0736, E-ISSN 1532-8430, Vol. 17, no 4, 361-370 p.Article in journal (Refereed)
Abstract [en]

In 179 patients with anterior myocardial infarction the electrocardiographically estimated infarct size was related to serum enzyme activity. A precordial map containing 24 precordial positions and the peak activity of heat stable dehydrogenase (LD; EC 1.1.1.27) were used. A positive correlation was found between the area at risk (initial sum of ST-elevation) and the peak LD activity (r = 0.48 - 0.55; p less than 0.001). When the final Q-and R-wave amplitude were related to peak enzyme activity a better correlation was observed (r = 0.56 - 0.68; p less than 0.001). The sum of R-waves (sigma R) and the sum of Q-waves (sigma Q) in the 24 precordial leads were related to sigma R and sigma Q in five precordial standard leads. A good correlation was found between the two ECG methods (r = 0.75 - 0.83; p less than 0.001), indicating that an increased number of precordial leads gives information regarding the extent of infarction similar to that obtained with the routinely used standard leads. It is concluded that in the individual patient, serum enzyme activity and the final Q-and R-wave changes can give different information about infarct size. If, however, these two independent methods are used in a large number of patients in intervention studies they will probably give similar information about relative influence of the intervention on the mean infarct size.

Place, publisher, year, edition, pages
Churchill Livingstone , 1984. Vol. 17, no 4, 361-370 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:hb:diva-7594DOI: 10.1016/S0022-0736(84)80073-4Local ID: 2320/8456OAI: oai:DiVA.org:hb-7594DiVA: diva2:888474
Available from: 2015-12-22 Created: 2015-12-22

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Herlitz, Johan
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