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(Chest. 1974;66:450-452.)
© 1974 American College of Chest Physicians

Antegrade Concealed Conduction to the His Bundle; Documentation with His Bundle Recording

Ruben Chuquimh M.D.1; William Towne M.D.2; Hanumant Deshmukh M.D.3; and Kenneth M. Rosen M.D., F.C.C.P.4

1 Attending Physician, Cook County Hospital; Associate in Medicine, Abraham Lincoln School of Medicine, University of Illinois College of Medicine, Chicago, Ill
2 Director, Adult Cardiology, Cook County Hospital; Assistant Professor, Loyola University, Chicago, Ill
3 Department of Cardiology, Cook County Hapital, and Section of Cardiology, Abraham Lincoln School of Medicine, University of Illinois College of Medicine, Chicago, ILL
4 Chief and Professor of Medicine, Cardiology Section, Abraham Lincoln School of Medicine University of Illinois Collene of Medicine. Chicago. Ill

A patient had blocked interpolated premature atrial contractions, followed by P-R prolongation in the subsequent cycle, suggesting antegrade concealed conduction to the A-V node. His bundle recordings revealed this interpretation to be erronebus. The atrial premature beats were blocked distal to the H recording site. The P-R prolongation in the subsequent beat rdected delay in the His bundle ("splitting" of H potentials). This was tbns an example of antegrade concealed conduction to the His bundle, a new manifstrrtion of concealed conduction.






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Copyright © 1974 by the American College of Chest Physicians.