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Exercise induced left bundle branch block in isotopic exercise test. Findings and prognostic value. / Bloqueo de rama izquierda inducido por el ejercicio en la ergometría isotópica. Hallazgos y valor pronóstico.
Gomez, M V; Lorente Castro, B C; Jané, P; García-Zoghby, L; Martínez-Lorca, A; Pérez, J A.
Afiliação
  • Gomez MV; Medicina Nuclear, Hospital Ramón y Cajal, Madrid, España. Electronic address: marivalgomez@gmail.com.
  • Lorente Castro BC; Hospital Universitario Ramón y Cajal, Madrid, España.
  • Jané P; Hospital Universitario Ramón y Cajal, Madrid, España.
  • García-Zoghby L; Hospital Universitario La Paz, Madrid, España.
  • Martínez-Lorca A; Hospital Universitario Ramón y Cajal, Madrid, España.
  • Pérez JA; Hospital Universitario Ramón y Cajal, Madrid, España.
Article em En, Es | MEDLINE | ID: mdl-29680771
INTRODUCTION: Exercise-induced left bundle branch block (EI-LBBB) is a rare circumstance of unknown significance. The purpose of this paper is to describe the scintigraphic features and the prognostic value of this finding. MATERIAL AND METHODS: We reviewed the features of 1,885 patients who had visited our department to undergo GATED-SPECT ergometry to diagnose ischaemic heart disease. Seven patients showed EI-LBBB throughout the exercise testing. Coronary angiography was performed in 4 of them. Patients were followed-up over an average period of time of 30±8 months. The onset of major cardiovascular events was recorded during the follow-up period. RESULTS: The prevalence of EI-LBBB was 0.37%. Six out of 7 patients were women. Myocardial function and perfusion were normal in 3 patients. Three patients had fixed perfusion defects and one patient had a reversible defect. Two out of the 4 patients showing perfusion defects presented a moderate-severe decrease of the left ventricular ejection fraction. None of the 4 patients with perfusion defects were found to have coronary disease on coronary angiography. CONCLUSIONS: The prevalence of EI-LBBB among the patients that came to undergo GATED-SPECT ergometry was very low. The finding was more frequent in women. In our series, 2 patients presented non-ischaemic structural heart disease, but no patient was diagnosed with coronary artery disease. In our patients the presence of EI-LBBB did not relate to a greater risk of experiencing a major cardiovascular event.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Bloqueio de Ramo / Teste de Esforço Idioma: En / Es Ano de publicação: 2018 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Bloqueio de Ramo / Teste de Esforço Idioma: En / Es Ano de publicação: 2018 Tipo de documento: Article