[Asymptomatic XXXX . Electrocardiographic and echocardiographic findings].

@entity1 @entity7246 @entity13675 @entity1347 @entity1526
A total of 70 blood-donor volunteers were studied to determine the utility of the echocardiogram and Doppler in the diagnosis of @entity13675 in asymptomatic @entity1 with @entity1526 . These @entity1 came from endemic areas and had humoral positive reactions for South American @entity7246 . They were checked against a control group of blood-donors with no environmental antecedents and with negative reactions. Both groups were similar in age and sex. The chagasic group showed an abnormal electrocardiogram in twelve cases (17.4%), being @entity1347 the most frequent alteration found (nine cases, 62.5%). In the control group no alterations were found (p = 0.0005). The echocardiogram and Doppler were abnormal in 29 cases of the chagasic group (38.8%): alterations in ventricular relaxation were found in 8 cases (27.6%), enlargement of cavities in 9 (31%), both phenomena in 9 (31%) and alteration of parietal motility in 3 (10.3%). In the control group, 1 case presented alteration in ventricular relaxation (p = 0.000008). These results confirmed that the abnormal discoveries were related to @entity1526 . Out of 70 chagasic @entity1 , 31 (44.29%) showed some alteration in the tests: 12 had an abnormal electrocardiogram, and of these only 2 had normal echocardiogram and Doppler, the rest showed abnormal echocardiogram and Doppler. Other 29 (of these 70 @entity1 ) showed some alteration in the echocardiogram and Doppler, and 20 of them presented a normal electrocardiogram. It can be concluded that the echocardiogram and Doppler are more accurate to detect cardiac involvement in asymptomatic chagasic @entity1 than the electrocardiogram, showing abnormality in many cases where there are no electrocardiographic alterations. On the other hand, @entity1 with abnormal electrocardiogram and Doppler are less frequent. Therefore, to define the undetermined period of @entity1526 echocardiogram and Doppler should be incorporated as a routine resource of diagnosis considering the high percentage of cases in which cardiac participation is detected when there is no clinic, radiologic and electrocardiographic disturbance.
