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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Series: | Revista Portuguesa de Cardiologia (English Edition) |
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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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