Concealed ventricular parasystole uncovered in the form of ventricular escapes of variable coupling.
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چکیده
منابع مشابه
Concealed ventricular parasystole uncovered in the form of ventricular escapes of variable coupling.
Exit block from a parasystolic focus is recognized when automatic discharges fail to become manifest during the excitable phase of the ventricular cycle. In the present study, an apparently complete exit block and a persistently concealed ventricular parasystole (VP) resulted from an exit refractory period (ExRP) longer than the sinus cycle length. Slowing of the heart rate caused the concealed...
متن کاملCASE REPORTS Concealed Ventricular Parasystole Uncovered in the Form of Ventricular Escapes of Variable Coupling
Exit block from a parasystolic focus is recognized when automatic discharges fail to become manifest during the excitable phase of the ventricular cycle. In the present study, an apparently complete exit block and a persistently concealed ventricular parasystole (VP) resulted from an exit refractory period (ExRP) longer than the sinus cycle length. Slowing of the heart rate caused the concealed...
متن کاملMechanisms of ventricular parasystole.
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 ...
متن کاملVentricular parasystole in acute myocardial infarction.
The clinical and electrocardiographic features of 11 patients with ventricular parasystole in acute myocardial infarction are described. This arrhythmia always appeared within the first 24 hours after the beginning of the pain, and lasted usually a few hours. Only one patient received digitalis before the appearance of the arrhythmia; the others did not receive any drug of known arrhythmic pote...
متن کاملConcealed ventricular extrasystoles.
AN apparently haphazard distribution of ventricular extrasystoles may not be so haphazard as it appears and indeed may mask an underlying regularity. We previously reported a case in which careful analysis uncovered a simple but remarkable phenomenon, namely, that the interectopic intervals always contained an odd number of sinus beats.1 This was explicable on the assumption that a bigeminal rh...
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ژورنال
عنوان ژورنال: Circulation
سال: 1981
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.64.1.199