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Espe E, Stokke MK. Editorial for "MRI Assessment of Myocardial Deformation for Risk Stratification of Major Arrhythmic Events in Patients with Non-Ischemic Cardiomyopathy Eligible for Primary Prevention Implantable Cardioverter Defibrillators". J Magn Reson Imaging 2024; 60:1987-1988. [PMID: 38358060 DOI: 10.1002/jmri.29300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2024] [Accepted: 02/02/2024] [Indexed: 02/16/2024] Open
Affiliation(s)
- Emil Espe
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway
- KG Jebsen Center for Cardiac Research, University of Oslo, Oslo, Norway
| | - Mathis Korseberg Stokke
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, Oslo, Norway
- KG Jebsen Center for Cardiac Research, University of Oslo, Oslo, Norway
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Winsløw U, Elming MB, Thune JJ, Haarbo J, Thornvig Philbert B, Svendsen JH, Pehrson S, Jøns C, Bundgaard H, Køber L, Risum N. Reduced inferior wall longitudinal strain is associated with malignant arrhythmias in non-ischemic heart failure. Pacing Clin Electrophysiol 2023. [PMID: 37120825 DOI: 10.1111/pace.14706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/03/2023] [Accepted: 04/15/2023] [Indexed: 05/02/2023]
Abstract
BACKGROUND Reduced systolic myocardial function in the inferior region of the left ventricle has been suggested to be associated with malignant arrhythmias. We tested this hypothesis in patients with non-ischemic heart failure. METHODS Patients with non-ischemic heart failure (left ventricular ejection fraction [LVEF] < 35%) were evaluated by 2D-speckle-tracking echocardiography. The regional longitudinal strain was calculated for each of the six left ventricular walls. The reduced regional function was defined as strain below the median. The outcome was a composite of sudden cardiac death, admission with sustained ventricular arrhythmia, resuscitated cardiac arrest, and appropriate therapy from a primary prophylactic implantable cardioverter defibrillator. Time-to-first-event analysis was performed using a Cox model. RESULTS From two centers, 401 patients were included (median age: 63 years, 72% male) with a median LVEF of 25% (interquartile range [IQR] 20;30), and a median inferior wall strain of -9.0% (-12.5; -5.4). During a median follow-up of 4.0 years, 52 outcomes occurred. After multivariate adjustment for clinical and electrocardiographic parameters, inferior wall strain was independently associated with the outcome (HR 2.50 [1.35; 4.62], p = .003). No independent association was found between the composite outcome and reduced strain in any of the other left ventricular walls, Global Longitudinal Strain (HR 1.66 [0.93; 2.98], p = .09), or LVEF (HR 1.33 [0.75; 2.33], p = .33). CONCLUSIONS Below median strain in the left ventricular inferior region was independently associated with a 2.5-fold increase in the risk of malignant arrhythmias and sudden cardiac death in patients with non-ischemic heart failure.
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Affiliation(s)
- Ulrik Winsløw
- Department of Cardiology, Copenhagen University, Hospital-Rigshospitalet, Copenhagen, Denmark
| | - Marie Bayer Elming
- Department of Cardiology, Zealand University Hospital-Roskilde, Roskilde, Denmark
| | - Jens Jakob Thune
- Department of Cardiology, Copenhagen University Hospital-Bispebjerg and Frederiksberg, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Jens Haarbo
- Department of Cardiology, Copenhagen University Hospital-Herlev and Gentofte, Herlev, Denmark
| | - Berit Thornvig Philbert
- Department of Cardiology, Copenhagen University, Hospital-Rigshospitalet, Copenhagen, Denmark
| | - Jesper Hastrup Svendsen
- Department of Cardiology, Copenhagen University, Hospital-Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Steen Pehrson
- Department of Cardiology, Copenhagen University, Hospital-Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Christian Jøns
- Department of Cardiology, Copenhagen University, Hospital-Rigshospitalet, Copenhagen, Denmark
| | - Henning Bundgaard
- Department of Cardiology, Copenhagen University, Hospital-Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Lars Køber
- Department of Cardiology, Copenhagen University, Hospital-Rigshospitalet, Copenhagen, Denmark
- Department of Clinical Medicine, University of Copenhagen, Copenhagen, Denmark
| | - Niels Risum
- Department of Cardiology, Copenhagen University, Hospital-Rigshospitalet, Copenhagen, Denmark
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Jani V, Mukherjee M. Forgotten No More, The People's Ventricle Has Spoken. J Card Fail 2023:S1071-9164(23)00073-8. [PMID: 36944402 DOI: 10.1016/j.cardfail.2023.02.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 02/21/2023] [Indexed: 03/23/2023]
Affiliation(s)
- Vivek Jani
- Johns Hopkins University School of Medicine
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