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Late gadolinium enhancement cardiac magnetic resonance imaging for the prediction of ventricular tachyarrhythmic events: a meta-analysis

Late gadolinium enhancement cardiac magnetic resonance imaging for the prediction of ventricular tachyarrhythmic events: a meta-analysis
Late gadolinium enhancement cardiac magnetic resonance imaging for the prediction of ventricular tachyarrhythmic events: a meta-analysis
AIMS:
Approaches to the risk stratification for sudden cardiac death (SCD) remain unsatisfactory. Although late gadolinium enhancement cardiac magnetic resonance imaging (LGE-CMR) for SCD risk stratification has been evaluated in several studies, small sample size has limited their clinical validity. We performed this meta-analysis to better gauge the predictive accuracy of LGE-CMR for SCD risk stratification.

METHODS AND RESULTS:
Electronic databases and published bibliographies were systematically searched to identify studies evaluating the association between the extent of LV scar on LGE-CMR and ventricular arrhythmic events [SCD, resuscitated cardiac arrest, the occurrence of ventricular arrhythmias, or appropriate implantable cardioverter defibrillator (ICD) therapy]. Only studies enrolling patients with CAD or non-ischaemic cardiomyopathy were included. Summary estimates of the relative risk (RR) and likelihood ratios (LRs) were calculated using random effects models. Eleven studies comprising 1105 patients were identified. During a mean/median follow-up of 8.5-41 months 207 patients had ventricular arrhythmic events. Ventricular arrhythmic events were more common in patients with a greater extent of LV scar: RR 4.33 [95% confidence interval (CI) 2.98-6.29], positive LR 1.98 (95% CI 1.66-2.37), and negative LR 0.33 (95% CI 0.24-0.46).

CONCLUSION:
The extent of LGE on CMR is strongly associated with the occurrence of ventricular arrhythmias in patients with reduced LVEF and may be a valuable risk stratification tool for identifying patients who will benefit from ICD therapy. However, uncertainties regarding clinical application persist and need to be addressed prior to introduction into broad clinical practice.
1388-9842
Scott, Paul A.
5a16b1f4-74d3-473f-9eeb-c2a823d690dc
Rosengarten, James
3ccf8397-ca9e-4b04-864f-5c2515db8965
Curzen, N.
70f3ea49-51b1-418f-8e56-8210aef1abf4
Morgan, John M.
ac98099e-241d-4551-bc98-709f6dfc8680
Scott, Paul A.
5a16b1f4-74d3-473f-9eeb-c2a823d690dc
Rosengarten, James
3ccf8397-ca9e-4b04-864f-5c2515db8965
Curzen, N.
70f3ea49-51b1-418f-8e56-8210aef1abf4
Morgan, John M.
ac98099e-241d-4551-bc98-709f6dfc8680

Scott, Paul A., Rosengarten, James, Curzen, N. and Morgan, John M. (2013) Late gadolinium enhancement cardiac magnetic resonance imaging for the prediction of ventricular tachyarrhythmic events: a meta-analysis. European Journal of Heart Failure. (doi:10.1093/eurjhf/hft053). (PMID:23558217)

Record type: Article

Abstract

AIMS:
Approaches to the risk stratification for sudden cardiac death (SCD) remain unsatisfactory. Although late gadolinium enhancement cardiac magnetic resonance imaging (LGE-CMR) for SCD risk stratification has been evaluated in several studies, small sample size has limited their clinical validity. We performed this meta-analysis to better gauge the predictive accuracy of LGE-CMR for SCD risk stratification.

METHODS AND RESULTS:
Electronic databases and published bibliographies were systematically searched to identify studies evaluating the association between the extent of LV scar on LGE-CMR and ventricular arrhythmic events [SCD, resuscitated cardiac arrest, the occurrence of ventricular arrhythmias, or appropriate implantable cardioverter defibrillator (ICD) therapy]. Only studies enrolling patients with CAD or non-ischaemic cardiomyopathy were included. Summary estimates of the relative risk (RR) and likelihood ratios (LRs) were calculated using random effects models. Eleven studies comprising 1105 patients were identified. During a mean/median follow-up of 8.5-41 months 207 patients had ventricular arrhythmic events. Ventricular arrhythmic events were more common in patients with a greater extent of LV scar: RR 4.33 [95% confidence interval (CI) 2.98-6.29], positive LR 1.98 (95% CI 1.66-2.37), and negative LR 0.33 (95% CI 0.24-0.46).

CONCLUSION:
The extent of LGE on CMR is strongly associated with the occurrence of ventricular arrhythmias in patients with reduced LVEF and may be a valuable risk stratification tool for identifying patients who will benefit from ICD therapy. However, uncertainties regarding clinical application persist and need to be addressed prior to introduction into broad clinical practice.

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More information

e-pub ahead of print date: 4 April 2013
Organisations: Human Development & Health

Identifiers

Local EPrints ID: 355246
URI: http://eprints.soton.ac.uk/id/eprint/355246
ISSN: 1388-9842
PURE UUID: 86d1d052-fa6a-492f-afa9-bc720934d602
ORCID for N. Curzen: ORCID iD orcid.org/0000-0001-9651-7829

Catalogue record

Date deposited: 19 Aug 2013 12:13
Last modified: 27 Apr 2022 01:48

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Contributors

Author: Paul A. Scott
Author: James Rosengarten
Author: N. Curzen ORCID iD
Author: John M. Morgan

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