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J Am Coll Cardiol. 2018 Feb 20;71(7):766-778. doi: 10.1016/j.jacc.2017.12.020.

Native T1 and ECV of Noninfarcted Myocardium and Outcome in Patients With Coronary Artery Disease.

Author information

1
Institute of Experimental and Translational Cardiac Imaging, DZHK Centre for Cardiovascular Imaging, Goethe University Frankfurt, Frankfurt am Main, Germany; Department of Cardiovascular Services, Guy's and St. Thomas' NHS Trust, London, United Kingdom; Department of Cardiology, University Hospital Frankfurt, Frankfurt-am Main, Germany. Electronic address: vppapers@icloud.com.
2
Department of Cardiovascular Services, Guy's and St. Thomas' NHS Trust, London, United Kingdom; King's College Hospital NHS Trust, Denmark Hill, London, United Kingdom.
3
Department of Cardiology, St. Vincent's University, Sydney, New South Wales, Australia.
4
Department of Cardiology, German Heart Institute Berlin, Berlin, Germany.
5
Department of Cardiology, Kerckhoff Hospital, University Giessen, Bad Nauheim, Germany.
6
Institute of Experimental and Translational Cardiac Imaging, DZHK Centre for Cardiovascular Imaging, Goethe University Frankfurt, Frankfurt am Main, Germany; Department of Radiology, Ankara University Hospital, Ankara, Turkey.
7
Institute of Experimental and Translational Cardiac Imaging, DZHK Centre for Cardiovascular Imaging, Goethe University Frankfurt, Frankfurt am Main, Germany; Department of Biomedical Sciences and Morphological and Functional Imaging, G. Martino University Hospital Messina, Messina, Italy.
8
Institute of Experimental and Translational Cardiac Imaging, DZHK Centre for Cardiovascular Imaging, Goethe University Frankfurt, Frankfurt am Main, Germany; Department of Cardiovascular Imaging, Menzies Institute for Medical Research, Hobart Tasmania, Australia.
9
Institute of Experimental and Translational Cardiac Imaging, DZHK Centre for Cardiovascular Imaging, Goethe University Frankfurt, Frankfurt am Main, Germany; Department of Cardiology, University Hospital Jakarta, Jakarta, Indonesia.
10
Institute of Experimental and Translational Cardiac Imaging, DZHK Centre for Cardiovascular Imaging, Goethe University Frankfurt, Frankfurt am Main, Germany; Department of Cardiology, University Hospital La Paz, Madrid, Spain.
11
Institute of Experimental and Translational Cardiac Imaging, DZHK Centre for Cardiovascular Imaging, Goethe University Frankfurt, Frankfurt am Main, Germany; Department of Cardiology, University Hospital Ramón y Cajal, Madrid, Spain.
12
Institute of Experimental and Translational Cardiac Imaging, DZHK Centre for Cardiovascular Imaging, Goethe University Frankfurt, Frankfurt am Main, Germany; Department of Radiology, University Hospital Frankfurt, Frankfurt-am Main, Germany.
13
Department of Cardiology, Mount Sinai School of Medicine, New York, New York.
14
DZHK Institute of Biostatistics and Mathematical Modelling at Goethe University Frankfurt, Frankfurt am Main, Germany.
15
Department of Cardiology, University Hospital Frankfurt, Frankfurt-am Main, Germany.
16
Institute of Experimental and Translational Cardiac Imaging, DZHK Centre for Cardiovascular Imaging, Goethe University Frankfurt, Frankfurt am Main, Germany; Department of Cardiovascular Services, Guy's and St. Thomas' NHS Trust, London, United Kingdom; Department of Cardiology, University Hospital Frankfurt, Frankfurt-am Main, Germany; Department of Radiology, University Hospital Frankfurt, Frankfurt-am Main, Germany.

Abstract

BACKGROUND:

Coronary artery disease (CAD) remains the major cause of cardiac morbidity and mortality worldwide, despite the advances in treatment with coronary revascularization and modern antiremodeling therapy. Risk stratification in CAD patients is primarily based on left ventricular volumes, ejection fraction (LVEF), risk scores, and the presence and extent of late gadolinium enhancement (LGE). The prognostic role of T1 mapping in noninfarcted myocardium in CAD patients has not yet been determined.

OBJECTIVES:

This study sought to examine prognostic significance of native T1 mapping of noninfarcted myocardium in patients with CAD.

METHODS:

A prospective, observational, multicenter longitudinal study of consecutive patients undergoing routine cardiac magnetic resonance imaging with T1 mapping and LGE. The primary endpoint was all-cause mortality. Major adverse cardiocerebrovascular events (MACCE) (cardiac mortality, nonfatal acute coronary syndrome, stroke, and appropriate device discharge) are also reported.

RESULTS:

A total of 34 deaths and 71 MACCE (n = 665, males n = 424, median age [interquartile range] 57 [22] years; 64%; median follow-up period of 17 [11] months) were observed. Native T1 and extracellular volume were univariate predictors of outcome. Native T1 and LGE were stronger predictors of survival and MACCE compared with extracellular volume, LVEF, cardiac volumes, and clinical scores (p < 0.001). Native T1 of noninfarcted myocardium was the sole independent predictor of all-cause mortality (chi-square = 21.7; p < 0.001), which was accentuated in the absence of LGE or LVEF ≤35%. For MACCE, native T1 and LGE extent were joint independent predictors (chi-square = 25.6; p < 0.001).

CONCLUSIONS:

Characterization of noninfarcted myocardium by native T1 is an important predictor of outcome in CAD patients, over and above the traditional risk stratifiers. The current study's results provide a basis for a novel risk stratification model in CAD based on a complementary assessment of noninfarcted myocardium and post-infarction scar, by native T1 mapping and LGE, respectively.

KEYWORDS:

T1 mapping; coronary artery disease; ischemic heart disease; outcome; remodeling

PMID:
29447739
DOI:
10.1016/j.jacc.2017.12.020

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