Cardiac 123I-MIBG scintigraphy and arrhythmic risk in left ventricular noncompaction

Left ventricular noncompaction is an unusual but increasingly recognized cardiomy-opathy, the etiology of which is still not definitely established. Clinical presentation includes a wide spectrum of scenarios, including heart failure, thromboembolism and malignant arrhyth-mias, with half of deaths o...

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Main Authors: Sílvia Marta Oliveira, Elisabete Martins, Ana Oliveira, Teresa Pinho, Cristina Gavina, Teresa Faria, José Carlos Silva-Cardoso, Jorge Pereira, Maria Júlia Maciel
Format: Article
Language:English
Published: Elsevier 2012-03-01
Series:Revista Portuguesa de Cardiologia (English Edition)
Online Access:http://www.sciencedirect.com/science/article/pii/S2174204912000293
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spelling doaj-d28c827bd1b442768c01257d544a67062020-11-25T02:40:33ZengElsevierRevista Portuguesa de Cardiologia (English Edition)2174-20492012-03-01313247250Cardiac 123I-MIBG scintigraphy and arrhythmic risk in left ventricular noncompactionSílvia Marta Oliveira0Elisabete Martins1Ana Oliveira2Teresa Pinho3Cristina Gavina4Teresa Faria5José Carlos Silva-Cardoso6Jorge Pereira7Maria Júlia Maciel8Cardiology Department, Hospital de São João, Porto, Portugal; Faculty of Medicine, Porto University, Porto, Portugal; Corresponding author.Cardiology Department, Hospital de São João, Porto, Portugal; Faculty of Medicine, Porto University, Porto, PortugalNuclear Medicine Department, Hospital de São João, Porto, PortugalCardiology Department, Hospital de São João, Porto, Portugal; Faculty of Medicine, Porto University, Porto, PortugalCardiology Department, Hospital de São João, Porto, Portugal; Faculty of Medicine, Porto University, Porto, PortugalNuclear Medicine Department, Hospital de São João, Porto, PortugalCardiology Department, Hospital de São João, Porto, Portugal; Faculty of Medicine, Porto University, Porto, PortugalNuclear Medicine Department, Hospital de São João, Porto, PortugalCardiology Department, Hospital de São João, Porto, Portugal; Faculty of Medicine, Porto University, Porto, PortugalLeft ventricular noncompaction is an unusual but increasingly recognized cardiomy-opathy, the etiology of which is still not definitely established. Clinical presentation includes a wide spectrum of scenarios, including heart failure, thromboembolism and malignant arrhyth-mias, with half of deaths occurring suddenly. Early detection of LVNC is therefore essential to prevent sudden cardiac death. To our knowledge, this is the first report of the presence of cardiac sympathetic nervous dysfunction, assessed by 123iodine-metaiodobenzylguanidine myocardial scintigraphy, in a patient with LVNC, preserved left ventricular systolic function and exercise-induced nonsustained ventricular tachycardia. This finding may be related to the increased arrhythmic risk observed in this cardiomyopathy, giving a new insight into the pathophysiology of LVNC. Resumo: O miocárdio não-compactado (MNC) é uma miocardiopatia que, embora rara, tem sido gradualmente mais descrita. O espectro de apresentac, ão clínica é variável, incluindo insufi-ciência cardíaca, fenómenos tromboembólicos e arritmias, sendo que metade das mortes ocorre subitamente (MSC). Por conseguinte, o diagnóstico precoce e correto do MNC é fundamental para a prevenc¸ão da MSC. O presente artigo ilustra pela primeira vez a presenc¸a de disfunc¸ão neuronal simpática, avaliada por cintigrafia cardíaca com 123I-metaiodobenzilguinadina, num doente com MNC, func¸ão sistólica ventricular esquerda preservada e taquicardia não susten-tada induzida pelo esforc¸o. A presenc¸a de alterac¸ões na actividade adrenérgica cardíaca pode estar relacionada com o maior risco arrítmico característico desta miocardiopatia, podendo contribuir para o melhor esclarecimento da sua patofisiologia. Keywords: Cardiac 123I-MIBG scintigraphy, Left ventricular noncompaction, Arrhythmias, : Cintigrafia cardíaca com 123I-MIBG, Miocárdio não-compactado, Arritmiashttp://www.sciencedirect.com/science/article/pii/S2174204912000293
collection DOAJ
language English
format Article
sources DOAJ
author Sílvia Marta Oliveira
Elisabete Martins
Ana Oliveira
Teresa Pinho
Cristina Gavina
Teresa Faria
José Carlos Silva-Cardoso
Jorge Pereira
Maria Júlia Maciel
spellingShingle Sílvia Marta Oliveira
Elisabete Martins
Ana Oliveira
Teresa Pinho
Cristina Gavina
Teresa Faria
José Carlos Silva-Cardoso
Jorge Pereira
Maria Júlia Maciel
Cardiac 123I-MIBG scintigraphy and arrhythmic risk in left ventricular noncompaction
Revista Portuguesa de Cardiologia (English Edition)
author_facet Sílvia Marta Oliveira
Elisabete Martins
Ana Oliveira
Teresa Pinho
Cristina Gavina
Teresa Faria
José Carlos Silva-Cardoso
Jorge Pereira
Maria Júlia Maciel
author_sort Sílvia Marta Oliveira
title Cardiac 123I-MIBG scintigraphy and arrhythmic risk in left ventricular noncompaction
title_short Cardiac 123I-MIBG scintigraphy and arrhythmic risk in left ventricular noncompaction
title_full Cardiac 123I-MIBG scintigraphy and arrhythmic risk in left ventricular noncompaction
title_fullStr Cardiac 123I-MIBG scintigraphy and arrhythmic risk in left ventricular noncompaction
title_full_unstemmed Cardiac 123I-MIBG scintigraphy and arrhythmic risk in left ventricular noncompaction
title_sort cardiac 123i-mibg scintigraphy and arrhythmic risk in left ventricular noncompaction
publisher Elsevier
series Revista Portuguesa de Cardiologia (English Edition)
issn 2174-2049
publishDate 2012-03-01
description Left ventricular noncompaction is an unusual but increasingly recognized cardiomy-opathy, the etiology of which is still not definitely established. Clinical presentation includes a wide spectrum of scenarios, including heart failure, thromboembolism and malignant arrhyth-mias, with half of deaths occurring suddenly. Early detection of LVNC is therefore essential to prevent sudden cardiac death. To our knowledge, this is the first report of the presence of cardiac sympathetic nervous dysfunction, assessed by 123iodine-metaiodobenzylguanidine myocardial scintigraphy, in a patient with LVNC, preserved left ventricular systolic function and exercise-induced nonsustained ventricular tachycardia. This finding may be related to the increased arrhythmic risk observed in this cardiomyopathy, giving a new insight into the pathophysiology of LVNC. Resumo: O miocárdio não-compactado (MNC) é uma miocardiopatia que, embora rara, tem sido gradualmente mais descrita. O espectro de apresentac, ão clínica é variável, incluindo insufi-ciência cardíaca, fenómenos tromboembólicos e arritmias, sendo que metade das mortes ocorre subitamente (MSC). Por conseguinte, o diagnóstico precoce e correto do MNC é fundamental para a prevenc¸ão da MSC. O presente artigo ilustra pela primeira vez a presenc¸a de disfunc¸ão neuronal simpática, avaliada por cintigrafia cardíaca com 123I-metaiodobenzilguinadina, num doente com MNC, func¸ão sistólica ventricular esquerda preservada e taquicardia não susten-tada induzida pelo esforc¸o. A presenc¸a de alterac¸ões na actividade adrenérgica cardíaca pode estar relacionada com o maior risco arrítmico característico desta miocardiopatia, podendo contribuir para o melhor esclarecimento da sua patofisiologia. Keywords: Cardiac 123I-MIBG scintigraphy, Left ventricular noncompaction, Arrhythmias, : Cintigrafia cardíaca com 123I-MIBG, Miocárdio não-compactado, Arritmias
url http://www.sciencedirect.com/science/article/pii/S2174204912000293
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