PMID: 422919Jan 1, 1979Paper

ST isopotential precordial surface maps in patients with acute myocardial infarction

Journal of Electrocardiology
R G MurrayC G Blomqvist

Abstract

ST amplitude distributions were studied in 41 patients with acute myocardial infarction by deriving isopotential maps from a 5 x 7 electrode precordial matrix. Independent data on infarct size and localization were obtained utilizing the technetium 99m stannous pyrophosphate scintigraphic method. The locus of maximal ST elevation was stable for at least two days in 86% of 27 patients with anterior infarction. A single maximum or maximum-minimum was found in 88% but 22% of the patients had multiple maxima and/or minima in at least two maps. Areas of significant ST elevation were often excluded from the precordial matrix. The site of maximal ST elevation correlated with scintigraphic infarct site but was displaced medially in lateral infarction. The relation between infarct size and sigmaST elevation was significant and curvilinear. sigmaST underestimated size in large anterior infarction. The correlation of the size and the number of sites with ST elevation greater than or equal to 1.5 mm was weak (r = 0.56). The degree of ST abnormality in 14 patients with inferior infarction decreased significantly during the initial 24 hours. The isopotential maps were similar to those obtained in anterior infarction but the polarity was reve...Continue Reading

References

Jan 1, 1975·Circulation·J T FlahertyB Pitt
Feb 1, 1977·Radiology·W R GrayJ T Willerson
Oct 1, 1976·Circulation·H A Fozzard, D S DasGupta
Oct 1, 1976·British Heart Journal·P L Thompson, V Katavatis
Jan 1, 1976·British Heart Journal·R M NorrisB N Singh
Jan 17, 1974·The New England Journal of Medicine·P R ReidB Pitt
Nov 1, 1970·British Heart Journal·C HarnarayanD B Brewer
May 1, 1971·British Heart Journal·D S ReidJ P Shillingford

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Citations

Apr 1, 1996·Journal of the American College of Cardiology·Y BirnbaumG I Barbash
Jul 1, 1985·Journal of the American College of Cardiology·C L WolfeJ T Willerson
Nov 1, 1991·British Heart Journal·L W TurnbullA L Muir
Jan 1, 1990·IEEE Engineering in Medicine and Biology Magazine : the Quarterly Magazine of the Engineering in Medicine & Biology Society·S Usui, H Araki

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