منابع مشابه
His bundle electrogram in P mitrale.
The His bundle electrogram was recorded in I9 cases with P mitrale simultaneously with standard lead II, and compared with 30 cases with normal P waves. Internodal conduction time (P1A) interval did not differ in P mitralefrom the controlgroup, confirming that prolonged atrial activation in P mitrale represents a specific 'left atrial block'. The importance of this observation is discussed with...
متن کاملHis Bundle electrogram in bundle-branch block.
SUMMARY Because a great majority of patients with chronic complete heart block have bilateral bundle-branch lesions, it becomes important to recognize earlier degrees of bilateral bundle-branch block. The H-V interval in the His bundle electrogram during unilateral bundle-branch block reflects the conduction primarily through the contralateral bundle branch, and thus the His bundle electrogram ...
متن کاملHis bundle electrogram during bidirectional tachycardia.
The case is reported of a 66-year-old woman with bidirectional tachycardia caused by digitalis intoxication. His bundle records demonstrated the presence of two foci, one junctional and the other a fascicular one.
متن کاملConcealed intraventricular conduction in the His bundle electrogram.
Multiple areas of concealed intraventricular conduction are deduced on the basis of aftereffects observed in His bundle recordings. Electrocardiograms and His bundle recordings are presented from two patients with unstable bilateral bundle branch block, the instability of which depended on the interval at which ventricular depolarization was initiated by sinus or paced impulses. This circumstan...
متن کاملHis electrogram alternans reveal dual-wavefront inputs into and longitudinal dissociation within the bundle of His.
BACKGROUND His electrogram (HE) amplitude and morphology changes were observed in our previous studies during transition from "fast" to "slow" atrioventricular nodal (AVN) conduction. This phenomenon and its significance for the dual-AVN electrophysiology are not well recognized and have not been studied. METHODS AND RESULTS Experiments were performed on 17 healthy rabbit atrial-AVN preparati...
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ژورنال
عنوان ژورنال: Heart
سال: 1972
ISSN: 1355-6037
DOI: 10.1136/hrt.34.10.1057