Electrocardiographic and Cardiac Magnetic Resonance Imaging Parameters As Predictors of a Worse Outcome in Patients with Idiopathic Dilated Cardiomyopathy

Overview

Journal Eur Heart J

Publisher Oxford University Press

Specialty Cardiology & Vascular Diseases

Date 2009 Jul 28

PMID 19633015

Citations 36

Authors

Vinzenz Hombach

Nico Merkle

Jan Torzewski

Johann M Kraus

Markus Kunze

Oliver Zimmermann

Hans A Kestler

Jochen Wohrle

Affiliations

Soon will be listed here.

Abstract

Aims: Clinical parameters are weak predictors of outcome in patients with idiopathic dilated cardiomyopathy (IDC). We assessed the prognostic value of cardiac magnetic resonance (CMR) parameters in addition to conventional clinical and electrocardiographic characteristics.

Methods And Results: One hundred and forty-one IDC patients were studied. QRS and QTc intervals were measured in 12-lead surface electrocardiogram. Patients were followed for median 1339 days, including 483 patient-years. The primary endpoint-cardiac death or sudden death-occurred in 25 (18%) patients, including 16 patients with cardiac death, 3 patients with sudden cardiac death (SCD), and 6 patients with ICD shock. Late gadolinium enhancement (LGE) was detected in 36 patients (26%). Kaplan-Meier survival analysis displayed QRS >110 ms (P = 0.010), the presence of LGE (P = 0.037), and diabetes mellitus (P < 0.001) as significant parameters for a worse outcome. Multivariable analysis revealed cardiac index (P < 0.001), right ventricular end-diastolic volume index (RVEDVI) (P = 0.006) derived from CMR imaging, the presence of diabetes mellitus (P = 0.006), and QRS >110 ms (P = 0.045) as significant predictors for the primary endpoint.

Conclusion: Cardiac index and RVEDVI derived from CMR imaging in addition to QRS duration >110 ms from conventional surface ECG and diabetes mellitus provide prognostic impact for cardiac death and SCD in patients with IDC.

Citing Articles

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Cardiac Magnetic Resonance as Risk Stratification Tool in Non-Ischemic Dilated Cardiomyopathy Referred for Implantable Cardioverter Defibrillator Therapy-State of Art and Perspectives.

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