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Value of 12-lead electrocardiogram to predict myocardial scar on FDG PET in heart failure patients

  • Susanne MarkendorfEmail author
  • Dominik C. Benz
  • Michael Messerli
  • Marvin Grossmann
  • Andreas A. Giannopoulos
  • Dimitri Patriki
  • Tobias A. Fuchs
  • Christoph Gräni
  • Aju P. Pazhenkottil
  • Ronny R. Buechel
  • Philipp A. Kaufmann
  • Oliver Gaemperli
ORIGINAL ARTICLE
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Abstract

Purpose

A surface 12-lead electrocardiogram (ECG) is widely available, fast, inexpensive, and safe. However, its value to predict a true myocardial scar in patients with ischemic cardiomyopathy (ICM) has not been studied extensively yet. This study was conducted to assess whether Q waves on resting surface 12-lead ECG are predictive of non-viable myocardium in patients with ICM.

Methods

We analyzed resting ECGs of 149 patients with ICM undergoing cardiac positron emission tomography (PET) with 13N-ammonia (NH3) and 18F-fluorodeoxyglucose (FDG) at our institution. Pathological Q waves and QS complexes were assigned to one of three coronary artery territories and compared to the PET findings. Myocardial scar was defined as 2 or more contiguous myocardial segments with an average (matched) reduction of NH3 and FDG uptake <50% of the maximum value.

Results

Pathological Q waves had a sensitivity and specificity of 70% and 40%, respectively, and a PPV and NPV of 37% and 73%, respectively, to detect myocardial scar on FDG PET. For QS complexes, sensitivity and specificity were 46% and 59%, respectively, and PPV and NPV were 36% and 68%, respectively. Sensitivity was lower, but specificity was significantly higher in both the LCX and RCA compared to the LAD territory (p<0.001), particularly for QS complexes.

Conclusion

Pathological Q waves on resting 12-lead ECG have poor or at best moderate sensitivity and specificity to detect myocardial scar on FDG PET. These findings support the use of more advanced imaging techniques to assess myocardial viability in ICM.

Keywords

Electrocardiogram FDG PET myocardial viability myocardial scar 

Abbreviations

ECG

Electrocardiogram

ICM

Ischemic cardiomyopathy

PET

Positron emission tomography

FDG

18F-Fluorodeoxyglucose

NH3

Ammonia

PPV

Positive predictive value

NPV

Negative predictive value

LVEF

Left ventricular ejection fraction

LBBB

Left bundle branch block

PM

Pacemaker

Notes

Disclosures

The authors have indicated that they have no financial conflict of interest.

Supplementary material

12350_2019_1841_MOESM1_ESM.pptx (2.4 mb)
Supplementary material 1 (PPTX 2429 kb)
12350_2019_1841_MOESM2_ESM.mp3 (3.3 mb)
Supplementary material 2 (MP3 3,378 kb)

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Copyright information

© American Society of Nuclear Cardiology 2019

Authors and Affiliations

  • Susanne Markendorf
    • 1
    Email author
  • Dominik C. Benz
    • 1
  • Michael Messerli
    • 1
  • Marvin Grossmann
    • 1
  • Andreas A. Giannopoulos
    • 1
  • Dimitri Patriki
    • 1
  • Tobias A. Fuchs
    • 1
  • Christoph Gräni
    • 1
  • Aju P. Pazhenkottil
    • 1
  • Ronny R. Buechel
    • 1
  • Philipp A. Kaufmann
    • 1
  • Oliver Gaemperli
    • 1
    • 2
  1. 1.Cardiac Imaging, Nuclear Medicine DepartmentUniversity Hospital ZurichZurichSwitzerland
  2. 2.HeartClinic HirslandenZurichSwitzerland

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