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  • Title: [Influence of propafenon on hemodynamics of the left ventricle and atrioventricular conduction with special reference to the WPW syndrome].
    Author: Probst P, Pachinger O.
    Journal: Z Kardiol; 1976 Mar; 65(3):213-24. PubMed ID: 1258514.
    Abstract:
    15 patients were injected 2 mg/kg Propafenon intravenously in 3 minutes. In 10 patients the changes of the atrio-ventricular conduction and the sinus-node recovery time were measured. In 5 out of these 10 patients the influence on the left ventricular systolic pressure, the left ventricular enddiastolic pressure and the dp/dtmax was also measured. 4 patients had a WPW-syndrom and one patient an AV nodal tachycardia. There was a significant increase of the PQ-time (16,7%), the AH interval (9%), HV interval (33%) and the width of the QRS complex (13.8%). The intratrial conduction (PA-time), the heart rate and the sinus-node recovery time were not influenced. In 6 out of 7 patients the effective refractory period of the AV node was prolonged and in one it remained unchanged. There was a statistically significant decrease of the dp/dt, the heart rate staying the same. The systolic pressure decreased slightly and the enddiastolic pressure increased insignificantly. In 3 out of 4 patients with WPW syndrome the accessory pathway was blocked and in the 4th the effective refractory period of the pathway prolonged. In 3 out of these 4 patients a tachycardia could be initiated by the extra-stimulus method which was not possible after administration of the drug.
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