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Influence of left bundle branch block on long-term mortality in a population with heart failure
Karolinska Institutet.
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2007 (English)In: European Heart Journal, ISSN 0195-668X, E-ISSN 1522-9645, Vol. 28, no 20, 2449-2455 p.Article in journal (Refereed) Published
Abstract [en]

Background: The purpose of this study was to assess the independent contribution of left bundle branch block (LBBB) on long-term mortality in a large cohort with symptomatic heart failure (HF) requiring hospitalization. Methods and Results: We studied a prospective cohort of 21 685 cases of symptomatic HF requiring hospitalization in the Register of Information and Knowledge about Swedish Heart Intensive care Admissions in 1995-2003. Long-term mortality was evaluated by Logistic regression analysis, adjusted for multiple covariates that could influence long-term prognosis. LBBB was present in 20% (4395 of 21 685) of HF admissions. Patients with LBBB had a higher prevalence of cardiac comorbid conditions than patients with no LBBB. 1-, 5-, and 10-year mortality was 31.5 vs. 28.4%, 69.3 vs. 61.3%, and 90.1 vs. 84.7% for HF patients with and without respectively LBBB. When adjusting for comorbidity, LBBB was associated with increased 5-year mortality (OR, 1.21, 95% CI, 1.10-1.35, P < 0.001). When left ventricular ejection fraction was included in the analysis LBBB had no longer any independent influence on 5-mortality (OR, 0.99, 95% CI, 0.62-1.56, P = 0.953). Conclusion: LBBB occurs in 1/5 in HF patients requiring hospitalization and is associated with a very high mortality. However, the high long-term mortality appears to be caused by cardiac comorbidities and myocardial dysfunction rather than the LBBB per se. © The European Society of Cardiology 2007. All rights reserved.

Place, publisher, year, edition, pages
2007. Vol. 28, no 20, 2449-2455 p.
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Medical and Health Sciences
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URN: urn:nbn:se:liu:diva-40771DOI: 10.1093/eurheartj/ehm262Local ID: 54073OAI: oai:DiVA.org:liu-40771DiVA: diva2:261620
Available from: 2009-10-10 Created: 2009-10-10 Last updated: 2017-12-13Bibliographically approved

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Stenestrand, Ulf

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  • apa
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  • de-DE
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Output format
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