Supernormal Conduction in RBBB
Report:
Sinus rhythm 72/min
SVEBs, one couplet
Right bundle branch block
Supernormal conduction
Comment:
The SVEBs are all preceded by Pâ, resetting the sinus pacemaker. What is unusual and unexpected is their normal intraventricular conduction despite prematurity, pre-existing RBBB in sinus beats and the long-short sequencing. This better-than-expected conduction is known as supernormal. It does not mean better or faster than normal.
Fig 45a. More SVEBs (of atrial origin, actually) with âsupernormalâ conduction.
Fig 46. 40 year old lady with recurrent tachycardia.
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