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Non-invasive measurement of cardiac output during atrial fibrillation: comparison between cardiac magnetic resonance imaging and inert gas rebreathing.
Saur, J; Trinkmann, F; Doesch, C; Weissmann, J; Hamm, K; Schoenberg, S O; Borggrefe, M; Haghi, D; Kaden, J J.
Afiliação
  • Saur J; First Department of Medicine (Cardiology, Angiology, Pneumology and Intensive Care), Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany. joachim.saur@umm.de
Cardiology ; 115(3): 212-6, 2010.
Article em En | MEDLINE | ID: mdl-20197660
OBJECTIVES: Atrial fibrillation (AF) is one of the most frequent heart rhythm disorders. It potentially influences cardiac function and its measurement. Cardiac magnetic resonance imaging (CMR) has become the new gold standard for non-invasive assessment of cardiac output (CO). A novel inert gas rebreathing (IGR) device based on the Fick Principle also proved promising in patients in sinus rhythm (SR). The aim of our study was to compare the agreement of non-invasive CO measurements between CMR and IGR in AF patients. METHODS: A total of 68 patients, 34 with AF and 34 pair-matched controls in SR, were included. RESULTS: Bland-Altman analysis showed good agreement between both methods, with an average deviation of 0.2 +/-1.2 l/min in the AF group versus 0.3 +/-1.0 l/min in the SR group (p = 0.77). IGR demonstrated good agreement for CO between 2.0 and 5.4 l/min. However, in hyperdynamic circulatory conditions (CO >5.5 l/min), the increasing disagreement of IGR and CMR measurements reached statistical significance. CONCLUSIONS: Non-invasive CO measurements using CMR and IGR are feasible in patients suffering from AF. Good agreement was found between the two methods in an unselected cohort. Hyperdynamic circulatory conditions can lead to significant measurement differences which, however, do not affect the reproducibility of IGR.
Assuntos

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Fibrilação Atrial / Hexafluoreto de Enxofre / Gasometria / Imageamento por Ressonância Magnética / Débito Cardíaco / Gases Nobres / Testes de Função Cardíaca / Óxido Nitroso Tipo de estudo: Prognostic_studies Limite: Adolescent / Adult / Aged / Female / Humans / Male / Middle aged Idioma: En Ano de publicação: 2010 Tipo de documento: Article

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Fibrilação Atrial / Hexafluoreto de Enxofre / Gasometria / Imageamento por Ressonância Magnética / Débito Cardíaco / Gases Nobres / Testes de Função Cardíaca / Óxido Nitroso Tipo de estudo: Prognostic_studies Limite: Adolescent / Adult / Aged / Female / Humans / Male / Middle aged Idioma: En Ano de publicação: 2010 Tipo de documento: Article