Abstract
His bundle electrograms were recorded in 20 patients. Conduction times from atrium to His bundle (A-H time) and His bundle to ventricle (H-V time) were measured and the sites of delay or block were localized to the proximal or distal A-V junction. On progressively increasing the atrial rate by atrial pacing, the A-H time lengthened, while the H-V time remained constant. Premature atrial beats usually resulted in prolongation of the A-H time only. In some instances, premature atrial beats also resulted in prolongation of the H-V time and aberrant ventricular conduction (change in configuration of the QRS complex). In patients with first degree heart block during sinus rhythm the A-H time was prolonged and the H-V time was either normal or prolonged. In higher degrees of heart block, the block was localized either in the proximal or distal A-V junction.
| Original language | English |
|---|---|
| Pages (from-to) | 228-237 |
| Number of pages | 10 |
| Journal | The American journal of cardiology |
| Volume | 25 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 1 1970 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
Cite this
Localization of A-V conduction defects in man by recording of the his bundle electrogram. / Narula, Onkar S.; Cohen, Lawrence Sanford; Samet, Philip; Lister, John W.; Scherlag, Benjamin; Hildner, Frank J.
In: The American journal of cardiology, Vol. 25, No. 2, 01.01.1970, p. 228-237.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Localization of A-V conduction defects in man by recording of the his bundle electrogram
AU - Narula, Onkar S.
AU - Cohen, Lawrence Sanford
AU - Samet, Philip
AU - Lister, John W.
AU - Scherlag, Benjamin
AU - Hildner, Frank J.
PY - 1970/1/1
Y1 - 1970/1/1
N2 - His bundle electrograms were recorded in 20 patients. Conduction times from atrium to His bundle (A-H time) and His bundle to ventricle (H-V time) were measured and the sites of delay or block were localized to the proximal or distal A-V junction. On progressively increasing the atrial rate by atrial pacing, the A-H time lengthened, while the H-V time remained constant. Premature atrial beats usually resulted in prolongation of the A-H time only. In some instances, premature atrial beats also resulted in prolongation of the H-V time and aberrant ventricular conduction (change in configuration of the QRS complex). In patients with first degree heart block during sinus rhythm the A-H time was prolonged and the H-V time was either normal or prolonged. In higher degrees of heart block, the block was localized either in the proximal or distal A-V junction.
AB - His bundle electrograms were recorded in 20 patients. Conduction times from atrium to His bundle (A-H time) and His bundle to ventricle (H-V time) were measured and the sites of delay or block were localized to the proximal or distal A-V junction. On progressively increasing the atrial rate by atrial pacing, the A-H time lengthened, while the H-V time remained constant. Premature atrial beats usually resulted in prolongation of the A-H time only. In some instances, premature atrial beats also resulted in prolongation of the H-V time and aberrant ventricular conduction (change in configuration of the QRS complex). In patients with first degree heart block during sinus rhythm the A-H time was prolonged and the H-V time was either normal or prolonged. In higher degrees of heart block, the block was localized either in the proximal or distal A-V junction.
UR - http://www.scopus.com/inward/record.url?scp=0014740845&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0014740845&partnerID=8YFLogxK
U2 - 10.1016/0002-9149(70)90583-7
DO - 10.1016/0002-9149(70)90583-7
M3 - Article
VL - 25
SP - 228
EP - 237
JO - American Journal of Cardiology
JF - American Journal of Cardiology
SN - 0002-9149
IS - 2
ER -