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Experiences from the use of twenty-four precordial chest leads in suspected acute myocardial infarction
[external].
1986 (English)In: Journal of Electrocardiology, ISSN 0022-0736, E-ISSN 1532-8430, Vol. 19, no 4, 381-388 p.Article in journal (Refereed)
Abstract [en]

In 671 patients with suspected acute myocardial infarction (MI) and no previous MI, precordial mapping with a grid containing 24 chest leads was performed within a few hours (mean = 4.8 hours; range 0-42 hours) after arrival in hospital and four days later. In 76% of the patients the criteria for definite MI, based on serum enzymes and a 12 lead standard electrocardiogram, were fulfilled. Among patients classified as having no definite MI, 2% had abnormal Q-waves on mapping on the fourth day; among patients classified as having a subendocardial MI (no abnormal Q-waves in the 12 standard leads), 7% had abnormal Q-waves on mapping on the fourth day. In patients who subsequently developed anterior MI, changes in the sum of Q-waves and the sum of R-waves were observed for more than 12 hours after onset of pain. ST-elevations defined from a normal population were seen in the initial recording in 60% of patients with anterior MI. Among those in whom the first recording was performed less than or equal to 4 hours after onset of pain, ST elevation was initially seen in 72%. A positive correlation was observed between the initial ST elevation and severity of chest pain, incidence of congestive heart failure and two-year mortality rate. We thus conclude that some further information regarding presence of Q-waves can be obtained in about 5% of patients with suspected acute MI from an increased number of precordial leads.

Place, publisher, year, edition, pages
Churchill Livingstone , 1986. Vol. 19, no 4, 381-388 p.
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:hb:diva-7621DOI: 10.1016/S0022-0736(86)81066-4Local ID: 2320/8535OAI: oai:DiVA.org:hb-7621DiVA: diva2:888502
Available from: 2015-12-22 Created: 2015-12-22

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Herlitz, Johan
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