Switch to
| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
19
|
| pubmed:dateCreated |
1985-7-9
|
| pubmed:abstractText |
In contrast to ST-segment depression during exercise, the mechanism for ST-segment elevation - a more unusual finding - is controversial and poorly understood. Exercise induced ST-segment elevation of 2 mm and more was observed in 80 of 3000 consecutive patients (2.6%) undergoing bicycle exercise testing using 6 of 12 ECG leads. This abnormality was detected in 70 of 777 patients (9%) with documented previous myocardial infarction and in 10 of 2223 (0.5%) patients without a history of myocardial necrosis and with normal resting ECG. The substantial differences in exercise induced ST-segment elevation between these two groups are: patients with previous myocardial infarction and angiographically documented left ventricular aneurysm revealed progressive asymptomatic ST-segment elevation on an average of 3.4 +/- 1.2 mm persisting for a long time (greater than 3 minutes) during the recovery period. The extent of ST-segment elevation appears to correlate with LV EF and LV volume. These patients should be treated medically (as in 73% of our patients), and cardiac catheterization is indicated only in the presence of severe angina, congestive LV failure and arrhythmias. Patients with normal ECG at rest showed ST-elevation at maximal exercise. ST-segment elevation was associated with chest pain, which was more pronounced and shorter in duration than in the other group (9.1 +/- 2.8 mm, less than 30 sec). ST-elevation was abrupt and not preceded by ST-segment depression. 8 of 10 patients with anterior ST-segment elevation had a left anterior descending artery (LAD) lesion. Therefore, exercise testing in this group predicts significant proximal LAD obstruction accessible for PTCA.
|
| pubmed:language |
ger
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:status |
MEDLINE
|
| pubmed:month |
May
|
| pubmed:issn |
0036-7672
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:day |
11
|
| pubmed:volume |
115
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
644-50
|
| pubmed:dateRevised |
2006-11-15
|
| pubmed:meshHeading |
pubmed-meshheading:4001910-Adult,
pubmed-meshheading:4001910-Coronary Angiography,
pubmed-meshheading:4001910-Coronary Disease,
pubmed-meshheading:4001910-Electrocardiography,
pubmed-meshheading:4001910-Exercise Test,
pubmed-meshheading:4001910-Female,
pubmed-meshheading:4001910-Heart Ventricles,
pubmed-meshheading:4001910-Humans,
pubmed-meshheading:4001910-Male,
pubmed-meshheading:4001910-Middle Aged,
pubmed-meshheading:4001910-Myocardial Infarction,
pubmed-meshheading:4001910-Rest
|
| pubmed:year |
1985
|
| pubmed:articleTitle |
[The significance of ST elevation in the exercise ECG].
|
| pubmed:publicationType |
Journal Article,
Comparative Study,
English Abstract
|