the results can be summarized as follows : -- practolol-polfa injected intravenously in amounts of 30-50 mg for horse or cow and 3-10 mg for dog in ten minutes deviates the curve evoked by sympathectomy ; -- after the administration of the drug functional changes of final ventricular complex disappear which is the result of adrenergic system prevalence ; -- repolarization disturbances observed after the blockade indicate a myocardial defect and later , a partial decrease of changes in t wave shows that a vegetative factor is involved ; -- increased disturbances of the repolarisation phase after the practolol test indicate of myocardial defect due to compensatory mechanism of adrenergic system in relation to serious hemodynamic disturbances of the heart ; -- practolol test gives wider possibilities of interpretation , not only from the diagnostic point of view , but therapeutic as well .
C0018827
ventricular
C0018787
heart