Electrocardiographic analysis of auricular electric systole in the sheep

Abstract

The different components of the electric auricular systole, as well as the possible relationship between them have been studied in 302 ECG from Merino Precoz sheep breed.A gradual increase in the P wave duration, RR interval, PQ interval and PQ segment accompanying the growth of the animal, has been obtained, whereas the P wave voltage decreases both gradually and significantly.An analysis of the P wave morphology shows a higher incidence of double waves over simple waves in 1 year old animals than in younger ones.A high correlation between the RR and PQ intervals as well as between the PQ interval and the PQ segment has been observed in all groups of the three leads studied.