Clinical Cardiac Electrophysiology in the Young by Macdonald Dick II

Author:Macdonald Dick, II
Language: eng
Format: epub
Publisher: Springer New York, New York, NY

Fig. 15.2Spontaneous His bundle extrasystoles (H′) arising at an H–H′ interval of 257 ms producing bigeminal rhythm. H′ fails to conduct to the ventricle but conducts retrograde to the atrium resulting in reversal of atrial activation from low to high atrium, associated with an inverted P wave (arrow). The bigeminal His bundle extrasystoles cause a marked slowing of ventricular rate. [Reprinted from Nasrallah AT, Gillette PC, Mullins CE, et al. Concealed his bundle extrasystoles in congenital heart disease. American Journal of Cardiology. 1975;35(2):288–292. With permission from Elsevier.]

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