| Cardiac and neuromuscular implications of left bundle branch block in left ventricular hypertrabeculation/noncompaction. | |
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MedLine Citation:
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PMID: 19279992 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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BACKGROUND: Left bundle branch block (LBB) is frequently found in left ventricular hypertrabeculation/noncompaction (LVHT). OBJECTIVES: To compare LVHT patients with and without LBB regarding LVHT location and extension, left ventricular function, symptoms, electrocardiographic findings, prevalence of neuromuscular disorders (NMDs) and mortality during follow-up. METHODS: The charts of patients who underwent transthoracic echocardiographic examination at the Krankenanstalt Rudolfstiftung (Wien, Austria) between June 1995 and November 2006 were examined. RESULTS: LVHT was diagnosed in 102 patients (30 women) with a mean (+/- SD) age of 53+/-16 years (range 14 to 94 years). A specific NMD was diagnosed in 21 patients and an NMD of unknown etiology was diagnosed in 47. The neurological investigation was normal in 14 patients and 20 patients refused the investigation. The 24 patients with LBB were older (61 versus 51 years of age; P<0.01), and suffered from exertional dyspnea (96% versus 59%; P<0.01) and heart failure (79% versus 46%; P<0.01) more often than patients without LBB. LBB patients had less frequent tall QRS complexes (8% versus 47%; P<0.01) and ST-T wave abnormalities (4% versus 50%; P<0.01) than patients without LBB. Patients with LBB had a larger left ventricular end-diastolic diameter (73 mm versus 61 mm; P<0.01), worse left ventricular fractional shortening (15% versus 26%; P<0.01) and more extensive LVHT (1.8 versus 1.5 ventricular segments; P<0.05). The prevalence of NMDs did not differ between patients with and without LBB. Survival did not differ between patients with and without LBB during follow-up. CONCLUSIONS: LBB is associated with increased age, decreased systolic function and increased extension of LVHT. Whether LBB is a prognostic factor in LVHT remains speculative. |
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Authors:
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C Stöllberger; G Blazek; M Winkler-Dworak; J Finsterer |
Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Canadian journal of cardiology Volume: 25 ISSN: 1916-7075 ISO Abbreviation: Can J Cardiol Publication Date: 2009 Mar |
Date Detail:
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Created Date: 2009-03-12 Completed Date: 2009-05-04 Revised Date: 2010-09-22 |
Medline Journal Info:
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Nlm Unique ID: 8510280 Medline TA: Can J Cardiol Country: Canada |
Other Details:
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Languages: eng Pagination: e82-5 Citation Subset: IM |
Affiliation:
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Second Medical Department, Krankenanstalt Rudolfstiftung, Wein, Austria. claudia.stoellberger@chello.at |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Adolescent Adult Aged Aged, 80 and over Bundle-Branch Block / complications*, mortality, pathology Cardiomyopathies / complications*, mortality, pathology Electrocardiography Female Heart Ventricles / pathology* Humans Male Middle Aged Neuromuscular Diseases / complications*, pathology Systole / physiology Young Adult |
| Comments/Corrections | |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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