Electrocardiographic findings in naturally acquired chagasic XXXX in nonhuman primates.

@entity1 @entity296 @entity714 @entity713 @entity1526 @entity6599 @entity299
The significance of electrocardiographic (ECG) changes described in animals with @entity1526 is questionable in view that other non-invasive comparisons have been lacking. 12-lead ECG and two-dimensional echocardiography (echo) was performed in 17 seropositive and 13 seronegative @entity6599 . Similar to @entity1 , a wide variety of ECG outcomes were observed in the infected animals. Standard ECG measurements were not different between groups. Five seropositive (29%) and 3 seronegative (23%) animals had low voltage; 4 seropositives (24%) and 2 (15%) seronegatives had tall P-waves. Precordial Q waves were seen in 10 seropositives (59%) and in 7 (54%) seronegatives without septal abnormalities on two-dimensional echo. One seropositive animal had a 2(nd) degree (Wenckebach) @entity713 and @entity714 . Most animals in both groups had diffuse T-wave abnormalities. Echo evidence of @entity299 was found in 4 seropositives and in none of the controls; thus, chagasic @entity299 was present in 24% of naturally infected @entity6599 . Since most non- @entity1 primates, irrespective of their serology, have diffuse, nonspecific ECG changes not necessarily diagnostic of @entity296 , two-dimensional echo should be added to their non-invasive assessment.
