Atrial Excitation Sequence during Ectopic Atrial Beats in the Rabbit
نویسندگان
چکیده
منابع مشابه
Ectopic Beats in Isolated Perfused Rabbit Hearts
Heart vector location was estimated for 23 isolated, perfused rabbit hearts during paced ectopic beats. Twenty computer-processed signals, derived from the surface electrodes of a spherical electrolyte-filled tank containing the hearts, were optimally fitted with a locatable cardiac dipole every millisecond of the QRS and every 3rd msec of the ST-T interval. During the QRS, the computed heart v...
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BACKGROUND Advancement of ventricular activation by an atrial premature beat (APB) given during His bundle refractoriness followed by resetting of an antidromic tachycardia (AT) in patients with decrementally conducting accessory pathway (DAP) is a helpful maneuver to prove pathway existence and participation in the circuit. We aim to assess in a large cohort the role of APB during AT in patien...
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Two patients were presented, and two previously unreported observations were made. Patient 1, a 50 year old man with episodic palpitations and dizziness for 10 years, exhibited initiation of idiopathic ventricular tachycardia (VT) by atrial fibrillation (AF). Patient 2, a 43 year old woman with a structurally normal heart but recurrent palpitations for one year, demonstrated fusion and capture ...
متن کاملThe spatial characteristics of atrial activation in ventriculo-atrial excitation.
Spatial characteristics of atrial activation were analyzed in arrhythmias displaying a ventrimlo-atrial sequence of excitation: junctional rhythm with preceding ventricular activation, "reciprocal" atrial beating, complete or high-grade A-V block with ventriculoatrial response and venlricular extnqstoles with ventriculoatrial response. It was found that the coupled P waves were markedly dissimi...
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ژورنال
عنوان ژورنال: Japanese Heart Journal
سال: 1974
ISSN: 0021-4868,1348-673X
DOI: 10.1536/ihj.15.593