Summary
ECG changes were studied in the agonal condition and during resuscitation of dogs. After quick death the ventricular complex usually shortened to 0.15–0.20 sec during the first minutes of the clinical death, while in re-establishment of the heart work it was increased to 0.25–0.35 sec. In a prolonged agony and clinical death the ventricular complex was not shortened as much, while in resuscitation it was prolonged to 0.4–0.55 sec.
Various changes which take place in the length of the ventricular complex in the processes of dying and resuscitation may be explained by the relationship of two factors: the velocity of the spread of excitation and the number of the myocardial elements which are excited.
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Maksimov, D.G. Changes in the duration of the ventricular complex of the electrocardiogram during interruption and restoration of the work of the heart. Bull Exp Biol Med 45, 674–680 (1958). https://doi.org/10.1007/BF00824582
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DOI: https://doi.org/10.1007/BF00824582