Two active junctional pacemakers manifested by atrioventricular dissociation and junctional captures.
نویسندگان
چکیده
A case of atrioventricular dissociation with RP-dependent abrupt prolongation of ventricular cycles is presented. The prolongation was less than expected with concealed junctional captures. It is assumed that resetting of an upper junctional pacemaker allowed impulses from a lower one to escape.
منابع مشابه
Patients with Dysfunction of the Sinus Node*
Automaticity (postpacing impulse recovery time) of the sinus node or subsidiary pacemakers (or both) was determined by intracardiac recordings and atrial overdrive pacing in three patients with disease of the sinus node. Their electrocardiographic manifestations included sinus bradycardia, sinoatrial block, sinus arrest, afrioventricular junctional rhythm, and atrioventricular dissociation. One...
متن کاملPrimary oxalosis with pan-conduction cardiac disease: electrophysiologic and anatomic correlation.
A 27-year-old man with primary oxalosis and extensive visceral involvement was maintained on long-term chronic hemodialysis. He had an episode of presyncope associated with electrocardiographic findings of an erratic atrial rhythm, atrioventricular dissociation due to an accelerated junctional rhythm and right bundle branch block. Electrophysiologic studies showed irregular atrial depolarizatio...
متن کاملAblation of cardiac tissues by an electrode catheter technique for treatment of ectopic supraventricular tachycardia in adults.
Five patients with chronic or recurrent ectopic supraventricular tachycardias unresponsive to drugs underwent programmed stimulation, endocardial mapping, and attempted catheter ablation of the arrhythmia focus. For attempted ablation, an intracardiac electrode catheter was positioned near the exit point of the tachycardia and served as the cathode while a chest wall patch served as the anode. ...
متن کاملAccelerated junctional rhythm, isorhythmic atrioventricular dissociation, and hidden P waves.
62-year-old diabetic, hypertensive woman with prior stenting of her dominant right coronary artery underwent coronary arteriography because of an abnormal stress test. A 90% narrowing of the left circumfl ex coronary artery beyond the second obtuse marginal branch was stented with a 3 × 18-mm drug-eluting stent. She went to the recovery room in good condition, and an electrocardiogram was recor...
متن کاملClinical and electrophysiologic characterization of automatic junctional tachycardia in adults.
Junctional ectopic tachycardia has been described in infants but not in adults. Five adults with rapid symptomatic paroxysmal junctional tachycardia, distinct from the more common slower nonparoxysmal junctional tachycardia, were recently evaluated. The tachycardia was irregular (rate 120 to 250) and accompanied by periods of atrioventricular dissociation and narrow QRS complexes. A junctional ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
- Chest
دوره 72 3 شماره
صفحات -
تاریخ انتشار 1977