Retrograde His bundle deflection in bundle-branch re-entry.

His 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 ...

RIGHT BUNDLE BRANCH PURKlNJE Flf 3 ERS F BUNDLE OF HIS I LEFT BUNDLE BRANCH MYOCARDIUM

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...

Longitudinal dissociation in the His bundle. Bundle branch block due to asynchronous conduction within the His bundle in man.

Rate-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 ...

His bundle recordings in patients with bundle branch block and transient neurologic symptoms.