Use este identificador para citar ou linkar para este item: http://ri.ufs.br/jspui/handle/riufs/1296
Tipo de Documento: Artigo
Título: Chronotropic incompetence and a higher frequency of myocardial ischemia in exercise echocardiography
Autor(es): Sousa, Antônio Carlos Sobral
Oliveira, Joselina Luzia Menezes
Goes, Thiago Jônatas Santos
Santana, Thaiana Aragão
Travassos, Thiago Figueiredo
Teles, Lívia Dantas
Andrade, Fernando Diego Anjos de
Nascimento Júnior, Adão Cardoso do
Alves, Érica Oliveira
Barreto, Martha Azevedo
Barreto Filho, José Augusto Soares
D'Oliveira Júnior, Argemiro
Data do documento: 2007
Abstract: Background Exercise echocardiography (EE) is an established method to diagnose coronary artery disease (CAD). Chronotropic incompetence (CI) during the EE may be a marker of myocardial ischemia. The purpose of this investigation was to evaluate the additive value of CI during EE in CAD diagnosis. Methods Between 2000 and 2006, 4042 patients (1900 men with a mean age of 56 ± 11 years) were evaluated by EE. Based on the heart rate (HR) reached during the exercise test, the subjects were divided into two groups: G1 group – 490 patients who failed to achieve 85% of the maximal age-predicted HR, and G2 group – 3552 patients who were able to achieve 85% of the maximal age-predicted HR. Clinical characteristics, left ventricular wall motion abnormalities – wall motion score index (WMSI) – and coronary angiography (CA) were the parameters compared between the two groups. Results The left ventricular wall motion abnormalities were more frequent in G1 group than in G2 group (54% versus 26%; P < 0.00001). WMSI was higher in G1 group than in G2 group, both at rest (1.06 ± 0.17 versus 1.02 ± 0.09; P < 0.0001) and after exercise (1.12 ± 0.23 versus 1.04 ± 0.21; P < 0.0001). In G1 group, 82% of the patients with positive EE for myocardial ischemia presented obstructive coronary, compared to 71% (P = 0.03) in G2 group. Conclusion CI is associated with a higher frequency of myocardial ischemia during EE, reinforcing the concept that CI is a marker of the severity of myocardial ischemia.
Palavras-chave: Ecocardiografia
Doença Arterial Coronariana
Incompetência Cronotrópica
Doença cardiovascular
Instituição/Editora: BioMed Central Ltd.
Citação: OLIVEIRA, J. L. M. et. al. Chronotropic incompetence and a higher frequency of myocardial ischemia in exercise echocardiography. Cardiovascular Ultrasound, Roma, v. 5, n. 38, 2007. Disponível em: <http://www.dx.doi.org/10.1186/1476-7120-5-38>. Acesso em: 06 out. 2014.
Licença: Creative Commons Attribution License 4.0
URI: https://ri.ufs.br/handle/riufs/1296
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