Publications by authors named "Mayara C Chambela"

Background: Transforming growth factor β1 (TGF-β1) and tumour necrosis factor (TNF) have been implicated in Chagas disease pathophysiology and may correlate with left ventricular (LV) function.

Objectives: We determined whether TGF-β1 and TNF serum levels correlate with LV systolic and diastolic functions and brain natriuretic peptide (BNP) serum levels in chronic Chagas disease.

Methods: This cross-sectional study included 152 patients with Chagas disease (43% men; 57 ± 12 years old), classified as 53 patients with indeterminate form and 99 patients with cardiac form (stage A: 24, stage B: 25, stage C: 44, stage D: 6).

View Article and Find Full Text PDF

Objectives: To evaluate the correlation of the total distance walked during the six-minute walk test (6MWT) with left ventricular function and quality of life in patients with Chagas Disease (ChD) complicated by heart failure.

Methods: This is a cross-sectional study of adult patients with ChD and heart failure diagnosed based on Framingham criteria. 6MWT was performed following international guidelines.

View Article and Find Full Text PDF

Background: Left atrial (LA) and left ventricular (LV) diastolic function analysis can yield new strategies to recognize early cardiac involvement and prognostic indicators in Chagas disease.

Methods: Patients with Chagas disease with the indeterminate (n = 69) or with the cardiac form (32 with changes limited to electrocardiography [stage A], 25 with changes in LV systolic function but no heart failure [HF; stage B], and 26 with HF) underwent evaluation of LV diastolic function (mitral inflow, pulmonary vein flow, color M-mode echocardiography, and tissue Doppler analysis), and LA function by three-dimensional echocardiography and strain analysis and were prospectively followed for the occurrence of clinical events. Echocardiograms were also obtained from 32 controls.

View Article and Find Full Text PDF

Background: Pharmaceutical care is the direct interaction between pharmacist and patient, in order to improve therapeutic compliance, promote adequate pharmacotherapeutic follow-up, and improve quality of life. Pharmaceutical care may be effective in reducing complications and in improving the quality of life of patients with chronic diseases, like Chagas heart disease, while bringing a positive impact on health system costs. The morbidity and mortality indexes for patients with Chagas heart disease are high, especially if this heart disease is complicated by heart failure.

View Article and Find Full Text PDF

Objectives: To assess the safety of benznidazole use in adult patients with chronic Chagas' disease.

Methods: The Naranjo algorithm was applied to classify the causality of adverse drug reactions (ADRs).

Results: In total, 190 patients were treated with benznidazole over a period of 4-180 days (mean 58.

View Article and Find Full Text PDF