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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
6
|
| pubmed:dateCreated |
1982-4-22
|
| pubmed:abstractText |
The pre- and postexercise ECGs of those with normal (n = 15) and those with abnormal (n = 66) coronary arteriogram (diameter reduction greater than or equal 50% regarded as significant) were compared in a series of 81 patients with effort angina. ECGs with other known causes of ST-T changes had been excluded. The ECGs 2 and 4 min after a bicycle exercise test were studied for an abnormal ST reaction, and the change in the T wave amplitude in lead V2 from before to 2 min after exercise was measured when there was no q wave, QS complex or negative T at rest in this lead. None of the 15 patients in the normal arteriogram group had abnormal ST reaction post exercise and 1 of 13 evaluable ECGs showed a reduction of T in V2 greater than or equal to 20%. In the abnormal arteriogram group, 37 of the 66 patients had an abnormal reaction and 17 of the remaining 26 evaluable ECGs showed a reduction of T in V2 greater than or equal to 20%. The sensitivity of an abnormal ST reaction for significant coronary obstructions was 56% at specificity of 100%. Addition of an alternative criterion of a reduction of the T amplitude in lead V2 greater than or equal to 20% from before to 2 min post exercise increased the sensitivity to 82% and decreased the specificity to 92%. Thus, it seems worthwhile to study the T V2 reaction in angina patients who do not show an abnormal ST reaction post exercise.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:status |
MEDLINE
|
| pubmed:issn |
0001-6101
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
210
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
451-4
|
| pubmed:dateRevised |
2004-11-17
|
| pubmed:meshHeading |
pubmed-meshheading:7331891-Adult,
pubmed-meshheading:7331891-Angina Pectoris,
pubmed-meshheading:7331891-Coronary Angiography,
pubmed-meshheading:7331891-Electrocardiography,
pubmed-meshheading:7331891-Exercise Test,
pubmed-meshheading:7331891-Female,
pubmed-meshheading:7331891-Humans,
pubmed-meshheading:7331891-Male,
pubmed-meshheading:7331891-Middle Aged
|
| pubmed:year |
1981
|
| pubmed:articleTitle |
Post exercise T wave changes in patients with normal and abnormal coronary arteriogram.
|
| pubmed:publicationType |
Journal Article
|