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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
2
|
| pubmed:dateCreated |
1994-3-30
|
| pubmed:abstractText |
Changes in R-wave amplitude during exercise tests performed soon after myocardial infarction (15-31 days, mean 22) were analyzed in 78 men in relation to left ventricular injury (determined by 2-D echocardiography), ventricular arrhythmias (24-h Holter monitoring) and survival after myocardial infarction. It has been found that in patients with mild left ventricular injury (n = 51, Heger index < or = 3) the sum of the R-wave amplitude in 15 precordial leads recorded immediately after exercise decreased by 3.7 +/- 10% in comparison with resting values. In the patients with major left ventricular injury (n = 26, Heger Index > 3) the sum of R-wave amplitude after exercise increased by 12.9 +/- 17.5% (P < 0.001). Positive linear correlation (r = 0.35, P < 0.01) was observed between the level of left ventricular wall motion disturbances and R-wave amplitude changes. In patients with normal or slightly disturbed cardiac rhythm (n = 42, Lown scale 0-2) the sum of the R-wave amplitude after exercise decreased by 5 +/- 18% as compared to resting values, whereas in the patients with complex arrhythmias (n = 23, Lown scale 3-5) the sum of R-wave amplitude increased amounting to 9.9 +/- 17% (P < 0.001). Out of 17 patients who died during 5-year follow up, 16 displayed an increase or no change of the sum of R-wave amplitude. The same kind of relations between R-wave amplitude changes and left ventricular injury or cardiac arrhythmias were noted in patients with anterior and inferior myocardial infarction.(ABSTRACT TRUNCATED AT 250 WORDS)
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:status |
MEDLINE
|
| pubmed:month |
Dec
|
| pubmed:issn |
0167-5273
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| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:day |
15
|
| pubmed:volume |
42
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
139-45
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| pubmed:dateRevised |
2007-11-15
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| pubmed:meshHeading |
pubmed-meshheading:8112918-Adult,
pubmed-meshheading:8112918-Aged,
pubmed-meshheading:8112918-Arrhythmias, Cardiac,
pubmed-meshheading:8112918-Echocardiography,
pubmed-meshheading:8112918-Electrocardiography,
pubmed-meshheading:8112918-Exercise Test,
pubmed-meshheading:8112918-Follow-Up Studies,
pubmed-meshheading:8112918-Heart Ventricles,
pubmed-meshheading:8112918-Humans,
pubmed-meshheading:8112918-Male,
pubmed-meshheading:8112918-Middle Aged,
pubmed-meshheading:8112918-Myocardial Infarction,
pubmed-meshheading:8112918-Prognosis,
pubmed-meshheading:8112918-Ventricular Function, Left
|
| pubmed:year |
1993
|
| pubmed:articleTitle |
Increase of R-wave in pre-discharge ergometric test after myocardial infarction indicates advanced left ventricular injury, latent serious arrhythmias and worse prognosis.
|
| pubmed:affiliation |
Postgraduate Medical School, Department of Cardiology, Warsaw, Poland.
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| pubmed:publicationType |
Journal Article
|