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  • Title: Cardiac memory in patients with intermittent Wolff-Parkinson-White syndrome.
    Author: Nirei T, Kasanuki H, Ohnishi S, Tamaki A, Toyoshima Y, Hosoda S.
    Journal: J Electrocardiol; 1997 Oct; 30(4):323-9. PubMed ID: 9375909.
    Abstract:
    This study used body surface mapping to evaluate the ventricular repolarization process in the absence of delta waves in 13 patients with the intermittent Wolff-Parkinson-White (WPW) syndrome. The findings were compared with data from 30 normal individuals and 50 patients with the overt WPW syndrome. The QRST isointegral maps of patients with the overt WPW syndrome exhibited abnormal areas and the QRST departure maps showed a peculiar distribution to each accessory pathway site. The QRST isointegral map exhibited abnormal areas in 11 of the 13 cases (85%) of the intermittent WPW syndrome in the absence of delta waves. In 8 of these 11 cases (73%), the distribution of the departure map resembled that in the overt WPW syndrome. These findings suggest that abnormal ventricular repolarization due to cardiac memory is present in patients with the intermittent WPW syndrome even in the absence of delta waves.
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