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Left axis deviation...
Left axis deviation in patients with left bundle branch block is a marker of myocardial disease associated with poor response to cardiac resynchronization therapy
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- Storkås, Hanne Stavø (författare)
- Gentofte Hospital
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- Hansen, Thomas Fritz (författare)
- Gentofte Hospital
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- Tahri, Jasmine Borg (författare)
- Gentofte Hospital
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- Lauridsen, Trine Kiilerich (författare)
- Gentofte Hospital
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- Olsen, Flemming Javier (författare)
- Gentofte Hospital
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- Borgquist, Rasmus (författare)
- Lund University,Lunds universitet,Kardiologi,Sektion II,Institutionen för kliniska vetenskaper, Lund,Medicinska fakulteten,Arrhytmias and Cardiac Device treatment,Forskargrupper vid Lunds universitet,Electrocardiology Research Group - CIEL,Clinical studies af Atrial Fibrillation,Cardiology,Section II,Department of Clinical Sciences, Lund,Faculty of Medicine,Lund University Research Groups
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- Vinther, Michael (författare)
- Copenhagen University Hospital
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- Lindhardt, Tommi Bo (författare)
- Gentofte Hospital
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- Bruun, Niels Eske (författare)
- University of Copenhagen,Aalborg University,Zealand University Hospital
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- Søgaard, Peter (författare)
- Aalborg University
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- Risum, Niels (författare)
- Gentofte Hospital
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(creator_code:org_t)
- Elsevier BV, 2019
- 2019
- Engelska.
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Ingår i: Journal of Electrocardiology. - : Elsevier BV. - 0022-0736.
- Relaterad länk:
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http://dx.doi.org/10...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Aims: Patients with left axis deviation (LAD) and left bundle branch block (LBBB) show less benefit from cardiac resynchronization therapy (CRT) compared to other LBBB-patients. This study investigates the reasons for this. Methods: Sixty-eight patients eligible for CRT were included. Patients were divided into groups according to QRS-axis; normal axis (NA), left axis deviation (LAD) and right axis deviation (RAD). Before CRT implantation CMR imaging was performed to evaluate scar tissue. Echocardiography was performed before and after implantation. The electrical substrate was assessed by measuring interlead electrical delays. Response was evaluated after 8 months by left ventricular (LV) remodelling and clinical response. Results: Forty-four (65%) patients were responders in terms of LV remodelling. The presence of LAD was found to be independently associated with a poor LV remodelling non-response OR 0.21 [95% CI 0.06–0.77] (p = 0.02). Patients with axis deviation had more myocardial scar tissue (1.3 ± 0.6 vs. 0.9 ± 0.6, P = 0.04), more severe LV hypertrophy (14 (64%) and 6 (60%) vs. 7 (29%), P = 0.05) and tended to have a shorter interlead electrical delay than patients with NA (79 ± 40 ms vs. 92 ± 48 ms, P = 0.07). A high scar tissue burden was more pronounced in non-responders (1.4 ± 0.6 vs. 1.0 ± 0.5, P = 0.01). Conclusions: LAD in the presence of LBBB is a predictor of poor outcome after CRT. Patients with LBBB and LAD have more scar tissue, hypertrophy and less activation delay.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Kardiologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Cardiac and Cardiovascular Systems (hsv//eng)
Nyckelord
- Cardiac resynchronization therapy
- Heart failure
- Left bundle branch block
- QRS axis deviation
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- ref (ämneskategori)
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Storkås, Hanne S ...
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Hansen, Thomas F ...
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Tahri, Jasmine B ...
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Lauridsen, Trine ...
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Olsen, Flemming ...
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Borgquist, Rasmu ...
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visa fler...
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Vinther, Michael
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Lindhardt, Tommi ...
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Bruun, Niels Esk ...
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Søgaard, Peter
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Risum, Niels
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visa färre...
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