Pseudo A-V block secondary to premature nonpropagated His bundle depolarizations: documentation by His bundle electrocardiography.
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چکیده
منابع مشابه
Concealed 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 کاملPhenomenon of the gap in atrioventricular conduction in the human heart.
The phenomenon of the "gap in atrioventricular conduction" was studied in eight human subjects, using a catheter technique for recording electrical activity of the His bundle. Premature atrial stimuli were applied throughout the basic atrial cycle, either during sinus rhythm or atrial pacing. As the coupling interval between the basic (A j) and premature (A2) atrial depolarizations was decrease...
متن کاملPseudo second degree atrioventricular block with bradycardia. Successful treatment with quinidine.
Pseudo second degree atrioventricular block resulting from blocked His premature beats was successfully treated with quinidine. The diagnosis was proved by His bundle electrogam which showed both blocked and conducted His premature beats. The blocked His prematures produced second degree atrioventricular block by making the atrioventricular junction refractory. Quinidine abolished both conducte...
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15. Pick A: Abberant ventricular conduction of escaped beats. Preferential and accessory pathways in the A-V junction. Circulation 13: 702, 1956 16. Kistin AD: Atrio-ventricular junctional premature and escaped beats with altered QRS and fusion. Circulation 34: 740, 1966 17. Anderson GJ, Greenspan K, Bandura JP, Fisch C: Asynchrony of conduction within the canine specialized Purkinje fiber syst...
متن کاملRate-dependency of functional block in the human His bundle and bundle branch-Purkinje system.
SUMMARY In eleven patients in whom atrial premature stimulation elicited functional block in the conduction system distal to the atrioventricular (A-V) node, the influence of atrial driving rate was studied. Functional conduction disturbances in the left bundle branch-Purkinje system were produced by driving the atria at a rate just above the spontaneous sinus rate and by introducing premature ...
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ورودعنوان ژورنال:
- Circulation
دوره 42 3 شماره
صفحات -
تاریخ انتشار 1970