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  • Title: Studies into equine electrocardiography and vectorcardiography. IV. Vector distributions in some arrhythmias.
    Author: Holmes JR, Alps BJ.
    Journal: Can J Comp Med Vet Sci; 1967 Sep; 31(9):219-25. PubMed ID: 4227915.
    Abstract:
    The paper describes the changes in P, QRS and T vector orientations in the H plane in the aberrant beats in cases of partial atrioventricular block and premature atrial and ventricular systoles. The sites of possible atrial ectopic foci are discussed in relation to the anatomy of the atrial chambers and the orientation of the P vectors associated with atrial ectopic beats.
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