Prevalence and factors associated with impaired left ventricular global longitudinal strain in patients with Chagas disease: SaMi-Trop cohort study
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Citações na Scopus
1
Tipo de produção
article
Data de publicação
2022
Título da Revista
ISSN da Revista
Título do Volume
Editora
SPRINGER
Autores
SANTOS JUNIOR, Omar Ribeiro
CARVALHO, Vinicius Tostes
BRITO, Bruno Oliveira de Figueiredo
FERREIRA, Ariela Mota
MAIA, Marcelo Alves
GOMES, Nayana Flamini Arantes
RIBEIRO, Antonio Luiz P.
NUNES, Maria Carmo P.
Citação
INTERNATIONAL JOURNAL OF CARDIOVASCULAR IMAGING, v.38, n.11, p.2353-2362, 2022
Resumo
Cardiomyopathy is a major cause of death in Chagas disease and early detection of cardiac involvement is essential. Myocardial strain is a reliable technique for assessment of subtle left ventricular (LV) contractility alterations. This study assessed LV global longitudinal strain (GLS) in a large Chagas disease population living in remote areas. Between 2015 and 2016, Chagas disease patients were selected in the northern of the Minas Gerais state. All patients underwent T. cruzi antibodies tests and those who had positive tests were included. A resting 12-lead ECG was recorded and classified using the Minnesota Code criteria. Echocardiography was performed at public health primary care units and speckle-tracking strain was analyzed offline. LV dysfunction was defined as ejection fraction (LVEF < 50%) and reduced GLS was defined as < 16% (absolute value). A total of 1387 patients were included, mean age of 60.0 +/- 12.5 years, 68% were women, and 14% had LV dysfunction. Among patients with normal LVEF, 59% had impaired LV GLS. Overall, patients with impaired GLS were older, had more comorbidities and ECG abnormalities than those with normal GLS. The independent factors associated with reduced GLS were ST-T abnormalities (OR 1.954; 95% CI 1.027-3.718), QRS duration (OR 1.009; 95% CI 1.002-1.016), LVEF (OR 0.947; 95% CI 0.923-0.972), and E/e' ratio (OR 1.059; 95% CI 1.009-1.112). In a cohort of Chagas disease from endemic areas, impaired LV GLS was detected in a significant proportion of patients, despite normal ECG and preserved LVEF. The main determinants of reduced LV GLS were ST-T abnormalities, QRS duration, LVEF and E/e' ratio, adjusting for demographical and clinical data.
Palavras-chave
Chagas disease, Global longitudinal strain, Speckle-tracking echocardiography, Electrocardiogram
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