European Journal of Heart Failure Advance Access originally published online on April 21, 2009
European Journal of Heart Failure 2009 11(6):573-580; doi:10.1093/eurjhf/hfp050
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Patterns of late gadolinium enhancement are associated with ventricular stiffness in patients with advanced non-ischaemic dilated cardiomyopathy
1 Cardiology Division, Yonsei Cardiovascular Center and Cardiovascular Research Institute, Shinchon-dong 134, Seoul, South Korea 120-752
2 Department of Radiology, Yonsei University College of Medicine, Seoul, Republic of Korea
* Corresponding author. Tel: +82 2 2228 2381, Fax: +82 2 2227 7943, Email: bchoi{at}yuhs.ac (B.W.C.) or Tel: +82 2 2228 8460, Fax: +82 2 2227 7943, Email: namsikc{at}yuhs.ac (N.C.)
| Abstract |
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Aims: Despite the prognostic importance of ventricular filling and ventricular–arterial interaction in patients with advanced systolic heart failure, the structural determinants of these parameters have not been fully studied. We aimed to investigate whether patterns of late gadolinium enhancement (LGE) on cardiac magnetic resonance affect ventricular elastic properties or performance in patients with non-ischaemic dilated cardiomyopathy (DCM).
Methods and results: Patients (n = 49) with markedly reduced systolic function (left ventricular (LV) ejection fraction <35%) due to longstanding non-ischaemic DCM underwent contrast-enhanced cardiac magnetic resonance after comprehensive echo-Doppler evaluations. The single beat-derived end-diastolic elastance, end-systolic elastance, arterial elastance, and dyssynchrony indices were measured by echo. On the basis of LGE patterns, patients could be divided into three groups: non-LGE (n = 18), non-midwall LGE (n = 13), and midwall LGE (n = 18). The midwall LGE group had lower LV systolic longitudinal velocity (4.6 ± 1.7 for non-LGE vs. 4.3 ± 1.2 for non-midwall LGE vs. 3.5 ± 1.0 cm/s for midwall LGE, P = 0.025), higher end-diastolic elastance index (0.41 ± 0.21 vs. 0.46 ± 0.31 vs. 0.85 ± 0.51 respectively, P = 0.008), and a more impaired ventriculoarterial coupling index (3.14 ± 1.53 vs. 2.88 ± 1.94 vs. 5.52 ± 3.18, P = 0.006) than other subgroups.
Conclusion: Patients with midwall LGE had a higher ventricular stiffness index and more impaired ventriculoarterial coupling when compared with other non-ischaemic DCM patients.
Key Words: dilated cardiomyopathy ventricular elastance magnetic resonance imaging
Received October 18, 2008; Revised February 13, 2009; Accepted February 26, 2009
This study was presented in part at Annual Scientific Session of the American Heart Association, held in November 2007 at Orlando, FL, USA.