Reentry within the His-Purkinje system. Elucidation of reentrant circuit using right bundle branch and His bundle recordings.
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Reentry within the His-Purkinje system. Elucidation of reentrant circuit using right bundle branch and His bundle recordings.
Routes of impulse propagation during reentry in the His-Purkinje system (Re-HPS) in 13 patients were studied using the right ventricular extra stimulus (V2) method and right bundle branch (RBB) recordings in addition to the conventional His (H) bundle recordings. The H-V and RB-V intervals during sinus rhythm averaged 44.2 and 27.6 msec respectively, with the average antegrade H-RB interval 16....
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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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19. Kittle CF, Santos EM, Dimond EG: Persistent right bundle branch block due to pulmonic valvotomy and infundibulectomy. Ann Surg 22: 80, 1956 20. Anderson PAW, Rogers MC, Canent RV, Yarmakani JMM, Jewett PH, Spach MS: Reversible complete heart block following cardiac surgery. Analysis of His bundle electrograms. Circulation 46: 514, 1972 21. Moore EN, Boineau JP, Patterson DF: Incomplete righ...
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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 ...
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A dom inant tenet in physio logy for m .ore t han half a century h as been the principle of homeostasis. The term was coined by W. B. Cannon (2) to describe the observation that physiological systems normally operate to reduce variability and to maintain a constancy of internal function. Accordingly, one might expect most any physiological variable, including heart rate, to return to its normal...
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ژورنال
عنوان ژورنال: Circulation
سال: 1978
ISSN: 0009-7322,1524-4539
DOI: 10.1161/01.cir.58.2.295