Table 1.
Demographic and medical characteristics of the study population, by T.cruzi antibody status.
Table 2.
Quantitative ECG measurements in T.cruzi seropositive and seronegative subjects.
Figure 1.
Quantitative ECG measurements in T.cruzi seropositive blood donors by left ventricular ejection fraction.
A. PR interval. B. QRS duration. C. QT interval corrected by Bazett's formula.
Figure 2.
Association between by left ventricular ejection fraction and ECG measurements.
A – Left ventricular ejection fraction and QRS duration; B - Left ventricular ejection franction and QT corrected interval; and C: Diagnostic accuracy (area under the ROC curve) of QRS duration and QT corrected interval in the detection of reduced left ventricular ejection fraction.
Table 3.
ECG findings in T.cruzi seropositive blood donors by LVEF.
Table 4.
Diagnostic performance of selected ECG findings in the recognition of reduced left ventricular ejection fraction (<0.50) in T.cruzi seropositive blood donors.