Consideration of the impact of reperfusion therapy on the quantitative relationship between the Selvester QRS score and infarct size by cardiac MRI.

Published

Journal Article

BACKGROUND: It has previously been shown that there is a good agreement between the Selvester QRS score and myocardial infarct (MI) size determined by postmortem histopathology in patients with nonreperfused MI. Currently, however, most patients with acute coronary thrombosis receive reperfusion therapy. Therefore, the aim of this study was to test the hypothesis that early reperfusion alters the quantitative relationship between Selvester QRS score and MI size. METHODS: Twenty-seven patients with acute first-time reperfused MI were studied. Infarct size was determined by delayed contrast-enhanced magnetic resonance imaging (DE-MRI) and estimated with the 50-criteria/31-point Selvester QRS scoring system 1 week after admission. The findings in the present study were compared with previous postmortem studies exploring the quantitative relationship between Selvester QRS score and MI size in nonreperfused patients. RESULTS: The quantitative relationship between QRS score and MI size by DE-MRI in the present study of early reperfused MI was significantly different from previous postmortem histopathology studies of nonreperfused MI (P < 0.0001). In the present study, each QRS point represented approximately 2% of the left ventricle, compared to approximately 3% in previous postmortem histopathology studies of nonreperfused MI. When only considering small to moderate MI sizes, there was no significant difference in the quantitative relationship between QRS score and infarct size (P > 0.05). CONCLUSIONS: There is a different quantitative relationship between QRS score and MI size in early reperfused MI compared to nonreperfused MI, partly explained by differences in MI size. Thus, the Selvester QRS scoring system may not be linearly related to MI size.

Full Text

Cited Authors

  • Knippenberg, SAM; Wagner, GS; Ubachs, JFA; Gorgels, A; Hedström, E; Arheden, H; Engblom, H

Published Date

  • July 2010

Published In

Volume / Issue

  • 15 / 3

Start / End Page

  • 238 - 244

PubMed ID

  • 20645966

Pubmed Central ID

  • 20645966

Electronic International Standard Serial Number (EISSN)

  • 1542-474X

International Standard Serial Number (ISSN)

  • 1082-720X

Digital Object Identifier (DOI)

  • 10.1111/j.1542-474x.2010.00370.x

Language

  • eng