Images in cardiology. Pseudoatrioventricular block manifesting as a 2:1 atrioventricular block and advanced atrioventricular block because of concealed junctional ectopic impulses.
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چکیده
منابع مشابه
Concealed AV junctional extrasystoles simulating second-degree sinoatrial block.
Concealed AV junctional extrasystoles are described which, conducted in a restrograde manner to the sinoatrial junction, interfere with sinus impulses, thus simulating a second-degree, 2:1, sinoatrial block.
متن کاملConcealed paroxysmal atrioventricular block: diffuse congenital atrioventricular conduction system disorder with nonpropagated His bundle depolarizations.
A 2 1/2-year-old girl with bradycardia and left bundle branch block at birth began to experience "night cries" when deeply asleep. Electrophysiological study demonstrated congenital diffuse atrioventricular conduction disease with concealed paroxysmal atrioventricular block, nonpropagated His bundle depolarizations, severe sinus node abnormality, and a low atrioventricular junctional escape rhy...
متن کاملEvaluation of intracardiac recordings in diagnosis of impulse formation and concealed conduction in atrioventricular nodal bypass tracts.
Invasive electrophysiological studies were performed in 2 symptomatic patients with recurrent arrhythmias in which impulse formation presumably occured within atrioventricular nodal bypass tracts. Case 1 had ectopic beats arising within, or close to, the upper end of a left-sided atrioventricular nodal bypass tract of the type described by Brechenmacher. In addition, this conduction was 'concea...
متن کاملConcealed retrograde conduction in complete atrioventricular block.
INCOMPLETE TRANSMISSION of impulses across the atrioventricular (A-V) junction has held a special fascination for many investigators.'14 Varied investigational techniques including venous pulse waves, standard electrocardiograms, and direct catheter electrode recordings from the cardiac chambers have been used to further the understanding of retrograde transmission of impulses into the A-V junc...
متن کاملJunctional ectopic tachycardia evolving into complete heart block.
Transition from congenital junctional ectopic tachycardia to complete AV block was observed in an 8 month old girl, over a 36 hour period, during initial hospital admission. Two years later she had evidence of a rapidly increasing left ventricular end diastolic diameter, associated with lowest heart rates during sleep of < 30 beats/min. A transvenous permanent pacemaker was therefore implanted....
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ورودعنوان ژورنال:
- Journal of the American College of Cardiology
دوره 56 9 شماره
صفحات -
تاریخ انتشار 2010