Ventricular fibrillation threshold for AC shocks of long duration, in dogs with normal acid-base state
Scott, Janet R., Lee, W. R., and Zoledziowski, S. (1973).British Journal of Industrial Medicine,30, 155-161. Ventricular fibrillation threshold for AC shocks of long duration, in dogs with normal acid-base state. Earlier experimental studies of threshold ventricular fibrillating currents passing alo...
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Veröffentlicht in: | British Journal of Industrial Medicine 1973-04, Vol.30 (2), p.155-161 |
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Sprache: | eng |
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Zusammenfassung: | Scott, Janet R., Lee, W. R., and Zoledziowski, S. (1973).British Journal of Industrial Medicine,30, 155-161. Ventricular fibrillation threshold for AC shocks of long duration, in dogs with normal acid-base state. Earlier experimental studies of threshold ventricular fibrillating currents passing along the common accident pathway of forelimb to leg have shown a wide range of results for any one shock duration. In the present investigation the acid-base state of the experimental animals (dogs) was held within normal limits. It was found that whereas the mean minimum fibrillating current, 82·2μA for 3-second shocks, was within the values found by other workers, the range of results was reduced considerably to 67-101μA. Further, when the shock duration was increased, in stages, up to 60 seconds, again keeping the acid-base state within normal limits, the mean minimum fibrillating current did not alter markedly (being 80μA at 60 seconds) but the range of results progressively fell and was 73-88μA at 60 seconds. In the light of these findings the mechanism of ventricular fibrillation is discussed. |
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ISSN: | 0007-1072 1351-0711 1470-7926 |
DOI: | 10.1136/oem.30.2.155 |