Objective: To evaluate the prognostic value of late gadolinium enhancement (LGE) in dilated cardiomyopathy (DCM) patients.
Methods: We searched PubMed, MEDLINE, the Cochrane library and EMBASE databases from September to December 2012 in the Renmin Hospital of Wuhan University, Wuhan, China for studies of LGE in DCM patients. We extracted the clinical outcomes (all-cause mortality, cardiovascular mortality, sudden cardiac death [SCD], aborted SCD, heart failure hospitalization) after carefully reviewed. A meta-analysis was performed to calculate pooled odds ratios (OR) with 95% confidence intervals (CIs) for prognostic outcomes in LGE positive versus LGE negative patients with DCM.
Results: Five studies for 545 DCM patients were contained in this meta-analysis. The results showed LGE positive patients was significantly associated with higher cardiovascular mortality (pooled OR: 2.67; 95% CI: 1.12-6.35; p=0.03), aborted SCD (pooled OR: 5.26; 95% CI: 1.57-17.55; p=0.007), and heart failure hospitalization (pooled OR: 3.91; 95% CI: 1.99-7.69; p<0.001).
Conclusion: Late gadolinium enhancement during cardiac MRI is significantly associated with cardiovascular mortality, aborted SCD and heart failure hospitalization in DCM patients. The LGE can be a potential stratification tool to predict the risk of cardiac events among patients with DCM.
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