[Significance exercise-induced ST elevation in patients with myocardial infarction].
In 52 patients with previous myocardial infraction, 49 men and 3 women (mean age 56 +/- 7.1 years) the significance of ST-segment elevation during the stress-test, was evaluated. Of the 52 patients 15 (29%) showed St-segment elevation and 37(71%), showed no alteration of the ST-segment. Extension of coronary disease, degree of obstruction, wall motion abnormalities and the presence of residual ischemia were evaluated by coronary angiography, technetium-99M pyrophosphate imaging and exercise TL-201 scintigraphy. From the results of the study one may conclude that, in patients with previous myocardial infraction exercise, ST-segment elevation is a consequence of sub-occlusion of the left anterior descending coronary artery with severe ventricular dysfunction either in patients with one or multiple vessel disease.
Carvalho
M
M
Serviço de Medicina IV-H.S.M., Instituto de Medicina Nuclear-F.M.L INIC-LA3, Lisboa.
Cantinho
G
G
de Lacerda
A P
AP
Dionísio
I
I
da Costa
B B
BB
Alves
M G
MG
De Pádua
F
F
Macieira-Coelho
E
E
D017023:Coronary Angiography; D004562:Electrocardiography; D005080:Exercise Test; D005260:Female; D015637:Gated Blood-Pool Imaging; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000000981:diagnostic imaging / Q000503:physiopathology*
Significado do supradesnivelamento ST de esforço em doentes com enfarte do miocárdio.