The 'Q' Deflection in Normal and Abnormal Human Electrocardiograms
| Autor: | Charles Shookhoff, Albert H. Douglas |
|---|---|
| Rok vydání: | 1933 |
| Předmět: |
medicine.medical_specialty
Pure mathematics business.industry General Medicine medicine.disease General Biochemistry Genetics and Molecular Biology Coronary artery disease Deflection (physics) Deflection (engineering) Internal medicine Internal Medicine medicine Cardiology business Left half Mathematics |
| Zdroj: | Experimental Biology and Medicine. 31:209-211 |
| ISSN: | 1535-3699 1535-3702 |
| DOI: | 10.3181/00379727-31-7062p |
| Popis: | Recent literature1, 2, 3, 4 contains much work on the significance of the Q-wave, and, more particularly of a large Q-3. Attempts have been made in some of these studies1, 4 to explain the mechanism underlying the production of a large Q-wave. Our knowledge of the mechanism of the normal Q-wave (e. g., Lewis'and Wilson's theories) has been used as a basis for discussions of the abnormal Q-waves. Conclusions have been drawn by one author4 from pathological correlations that the large Q-wave is representative of changes in a well localized portion of the heart (the left half of the septum posteriorly). Insufficient emphasis has been placed on the fact that the names Q, R and S are entirely arbitrary and that the Q-R-S system of terminology frequently gives the same name to parts of the electrocardiogram in the 3 standard leads that do not correspond in time, and different names to parts that do so correspond. We attempted an analysis of the Q-wave in normal records and in records of the large Q-3 type (desc... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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