Double ventricular parasystole. Supernormal phase of conduction as a mechanism of intermittent parasystole. Report of a case.
نویسندگان
چکیده
منابع مشابه
Double irregular ventricular parasystole: rate-dependent entrance block and "supernormal" exit conduction.
An analysis of electrocardiograms from a patient with spontaneous double irregular ventricular parasystole is presented. Irregularity in one of the two parasystoles was produced by intermittence based on rate-dependent (phase 3) entrance block, and in the other parasystole it was attributed to "supernormal" exist conduction. Critical analysis of electrocardiograms revealed that first degree blo...
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Eight cases of ventricular parasystole are reported. In all these cases, regardless of whether parasystole seems intermittent or "continuous," the presence of second degree entrance block of the Mobitz type I was suggested. Parasystole alternated with concealed extrasystolic bigeminy showing occasional reentrant extrasystoles. Such intermittent parasystole appears to originate in the reentrant ...
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Two patients with supraventricular parasystole (one atrioventricular and one auricular) are reported. In both patients, reentrant extrasystoles appeared to occur as the result of Mobitz type I second-degree entrance block. We believe that when a sinus impulse fell soon after the absolute refractory period of the pathway containing the parasytolic focus, it reached and discharged the focus after...
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15 صفحه اولHis bundle parasystole: A form of A-V junctional parasystole.
A 69-year-old man demonstrated continuous A-V junc-tional parasystole (A V m) over a three-week observation period. The parasystolic cycle length, although constant during each recording, changed proportionately and in parallel with the sines cycle length. Carotid sines massage lengthened the cycle length. During later recordings , the parasystolic impdse became less effective and only appeared...
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ژورنال
عنوان ژورنال: Circulation
سال: 1976
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.53.3.572