TRANSIENT ABNORMAL Q WAVES IN THE DOG WITHOUT MYOCARDIAL INFARCTION
| Autor: | Harry Gross, Ira L. Rubin, Abner J. Delman, Laszlo Bujdoso, Allan E. Bloomberg, Hilda Laufer |
|---|---|
| Rok vydání: | 1964 |
| Předmět: |
medicine.medical_specialty
Physiology Myocardial Infarction Autopsy QT interval Electrocardiography Dogs Cardiac Conduction System Disease Heart Conduction System Internal medicine medicine Humans cardiovascular diseases Myocardial infarction Brugada syndrome Brugada Syndrome medicine.diagnostic_test business.industry Research Arrhythmias Cardiac medicine.disease Coronary Vessels Peripheral Cardiology Electrical conduction system of the heart Cardiology and Cardiovascular Medicine business Ligation |
| Zdroj: | The American journal of cardiology. 14 |
| ISSN: | 0002-9149 |
| Popis: | Abnormal transitory Q waves in multiple leads were obtained in 7 of 19 dogs during experimental coronary artery ligation. The Q waves appeared within three minutes of ligation and disappeared within five minutes of release of ligation. Positional changes were eliminated as a cause of the Q wave. In 1 of the 5 dogs, a small subepicardial infarct was found at autopsy. In a second dog, a peripheral rim of necrotic muscle with some hemorrhage, probably too small to have caused Q waves, was present. The other 5 dogs showed no evidence of myocardial infarction. The data suggest that transient abnormal Q waves may result from electrophysiologic disturbance of the myocardium due to myocardial ischemia, in the presence or absence of myocardial infarction, and are indicative of myocardial infarction only when such Q waves persist for a protracted period. |
| Databáze: | OpenAIRE |
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