Cardiac magnetic resonance imaging: Infarct size is an independent predictor of mortality in patients with coronary artery disease

David Bello, Arnold Einhorn, Rishi Kaushal, Satish Kenchaiah, Aidan Raney, David Fieno, Jagat Narula, Jeffrey Goldberger, Kalyanam Shivkumar, Haris Subacius, Alan Kadish

Research output: Contribution to journalArticle

49 Scopus citations

Abstract

Background: Cardiac magnetic resonance imaging (CMR) can accurately determine infarct size. Prior studies using indirect methods to assess infarct size have shown that patients with larger myocardial infarctions have a worse prognosis than those with smaller myocardial infarctions. Objectives: This study assessed the prognostic significance of infarct size determined by CMR. Methods: Cine and contrast CMR were performed in 100 patients with coronary artery disease (CAD) undergoing routine cardiac evaluation. Infarct size was determined by planimetry. We used Cox proportional hazards regression analyses (stepwise forward selection approach) to evaluate the risk of all-cause death associated with traditional cardiovascular risk factors, symptoms of heart failure, medication use, left ventricular ejection fraction, left ventricular mass, angiographic severity of CAD and extent of infarct size determined by CMR. Results: Ninety-one patients had evidence of myocardial infarction by CMR. Mean follow-up was 4.8±1.6 years after CMR, during which time 30 patients died. The significant multivariable predictors of all-cause mortality were extent of myocardial infarction by CMR, extent of left ventricular systolic dysfunction, symptoms of heart failure, and diabetes mellitus (P<05). The presence of infarct greater than or equal to 24% of left ventricular mass and left ventricular ejection fraction less than or equal to 30% were the most optimal cut-off points for the prediction of death with bivariate adjusted hazard ratios of 2.11 (95% confidence interval 1.02-4.38) and 4.06 (95% confidence interval 1.73-9.54), respectively. Conclusions: The extent of myocardial infarction determined by CMR is an independent predictor of death in patients with CAD.

Original languageEnglish (US)
Pages (from-to)50-56
Number of pages7
JournalMagnetic Resonance Imaging
Volume29
Issue number1
DOIs
StatePublished - Jan 1 2011
Externally publishedYes

Keywords

  • Cardiac magnetic resonance imaging
  • Coronary artery disease
  • Myocardial infarction
  • Myocardial infarction mortality predictor

ASJC Scopus subject areas

  • Biophysics
  • Biomedical Engineering
  • Radiology Nuclear Medicine and imaging

Fingerprint Dive into the research topics of 'Cardiac magnetic resonance imaging: Infarct size is an independent predictor of mortality in patients with coronary artery disease'. Together they form a unique fingerprint.

  • Cite this

    Bello, D., Einhorn, A., Kaushal, R., Kenchaiah, S., Raney, A., Fieno, D., Narula, J., Goldberger, J., Shivkumar, K., Subacius, H., & Kadish, A. (2011). Cardiac magnetic resonance imaging: Infarct size is an independent predictor of mortality in patients with coronary artery disease. Magnetic Resonance Imaging, 29(1), 50-56. https://doi.org/10.1016/j.mri.2010.03.031