The use of periinfarct contrast-enhanced cardiac magnetic resonance imaging for the prediction of late postmyocardial infarction ventricular dysfunction

Jason C. Rubenstein, José T. Ortiz, Edwin Wu, Alan Kadish, Rod Passman, Robert O. Bonow, Jeffrey Goldberger

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Background: Although ejection fraction (EF) both perimyocardial infarction (MI) and late post-MI are important prognostic factors, only implantable cardioverter-defibrillator trials of post-MI patients with depressed late EF have shown improved survival. This may relate to imprecision of early EF because of post-MI stunning. We sought to determine if peri-MI infarct size, as measured by cardiac magnetic resonance (CMR), is superior to early EF to predict late post-MI EF. Methods: Seventy-three patients with ST-elevation MI had infarct size and EF quantified using CMR early (<1 week) and late (>3 months) post-MI. Results: Late EF was significantly correlated with early EF (R = 0.734, P < .001), and with infarct size (R = -0.661, P < .001), and both early EF and infarct size were significant predictors of late EF. Subgroup analyses showed that low late EF (≤35%) was better predicted by infarct size than early EF. Half of the patients with early EF ≤35% had a late EF >35%. There was no difference in early EF between the subgroup with a late EF >35% compared to the subgroup with late EF ≤35% (29.7% ± 4.6% vs 28.0% ± 4.9%, P = .414). There was, however, a significant difference between these 2 groups in infarct size (22.6% ± 10.8% vs 34.7% ± 7.8%, P = .011). Conclusions: Infarct size as determined by CMR immediately post-MI is a significant predictor of late EF and is superior to early EF in patients with initially depressed EF. Further studies are warranted to assess whether infarct size estimation by CMR after acute MI can better identify patients who are at risk for sudden cardiac death than early EF.

Original languageEnglish (US)
Pages (from-to)498-505
Number of pages8
JournalAmerican Heart Journal
Volume156
Issue number3
DOIs
StatePublished - Sep 1 2008
Externally publishedYes

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Ventricular Dysfunction
Infarction
Magnetic Resonance Spectroscopy
Magnetic Resonance Imaging
Implantable Defibrillators
Sudden Cardiac Death
Survival

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine

Cite this

The use of periinfarct contrast-enhanced cardiac magnetic resonance imaging for the prediction of late postmyocardial infarction ventricular dysfunction. / Rubenstein, Jason C.; Ortiz, José T.; Wu, Edwin; Kadish, Alan; Passman, Rod; Bonow, Robert O.; Goldberger, Jeffrey.

In: American Heart Journal, Vol. 156, No. 3, 01.09.2008, p. 498-505.

Research output: Contribution to journalArticle

Rubenstein, Jason C. ; Ortiz, José T. ; Wu, Edwin ; Kadish, Alan ; Passman, Rod ; Bonow, Robert O. ; Goldberger, Jeffrey. / The use of periinfarct contrast-enhanced cardiac magnetic resonance imaging for the prediction of late postmyocardial infarction ventricular dysfunction. In: American Heart Journal. 2008 ; Vol. 156, No. 3. pp. 498-505.
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abstract = "Background: Although ejection fraction (EF) both perimyocardial infarction (MI) and late post-MI are important prognostic factors, only implantable cardioverter-defibrillator trials of post-MI patients with depressed late EF have shown improved survival. This may relate to imprecision of early EF because of post-MI stunning. We sought to determine if peri-MI infarct size, as measured by cardiac magnetic resonance (CMR), is superior to early EF to predict late post-MI EF. Methods: Seventy-three patients with ST-elevation MI had infarct size and EF quantified using CMR early (<1 week) and late (>3 months) post-MI. Results: Late EF was significantly correlated with early EF (R = 0.734, P < .001), and with infarct size (R = -0.661, P < .001), and both early EF and infarct size were significant predictors of late EF. Subgroup analyses showed that low late EF (≤35{\%}) was better predicted by infarct size than early EF. Half of the patients with early EF ≤35{\%} had a late EF >35{\%}. There was no difference in early EF between the subgroup with a late EF >35{\%} compared to the subgroup with late EF ≤35{\%} (29.7{\%} ± 4.6{\%} vs 28.0{\%} ± 4.9{\%}, P = .414). There was, however, a significant difference between these 2 groups in infarct size (22.6{\%} ± 10.8{\%} vs 34.7{\%} ± 7.8{\%}, P = .011). Conclusions: Infarct size as determined by CMR immediately post-MI is a significant predictor of late EF and is superior to early EF in patients with initially depressed EF. Further studies are warranted to assess whether infarct size estimation by CMR after acute MI can better identify patients who are at risk for sudden cardiac death than early EF.",
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