Abstract
Clinical, surface ECG, and intracardiac findings were analyzed in 20 patients with spontaneous conduction disturbances in whom vagaily mediated AV block could be induced by carotid sinus pressure during electrophysiologic evaluation. The latter demonstrated that the surface ECG pattern attributed to bradycardia-dependent (phase 4), and paroxysmal block within the His bundle and bundle branches could reflect vagally mediated, bradycardia-associated (rather than bradycardia-dependent), and paroxysmal AV nodal (AH) block. The decision regarding the use of pacemakers was not based on QRS duration or on patterns (or site) of block but on the underlying clinical settings and the correlation of symptoms with maximal ventricular (R-R) pauses. However, more studies are required to extend our findings, especially to other subgroups of patients (or normal individuals) in whom vagally mediated block occurs.
| Original language | English |
|---|---|
| Pages (from-to) | 92-99 |
| Number of pages | 8 |
| Journal | American Heart Journal |
| Volume | 106 |
| Issue number | 1 PART 1 |
| DOIs | |
| State | Published - Jan 1 1983 |
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ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
Cite this
Multiple electrophysiologic manifestations and clinical implications of vagally mediated AV block. / Zaman, Liaqat; Moleiro, Federico; Rozanski, John J.; Pozen, Richard; Myerburg, Robert J; Castellanos, Agustin.
In: American Heart Journal, Vol. 106, No. 1 PART 1, 01.01.1983, p. 92-99.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Multiple electrophysiologic manifestations and clinical implications of vagally mediated AV block
AU - Zaman, Liaqat
AU - Moleiro, Federico
AU - Rozanski, John J.
AU - Pozen, Richard
AU - Myerburg, Robert J
AU - Castellanos, Agustin
PY - 1983/1/1
Y1 - 1983/1/1
N2 - Clinical, surface ECG, and intracardiac findings were analyzed in 20 patients with spontaneous conduction disturbances in whom vagaily mediated AV block could be induced by carotid sinus pressure during electrophysiologic evaluation. The latter demonstrated that the surface ECG pattern attributed to bradycardia-dependent (phase 4), and paroxysmal block within the His bundle and bundle branches could reflect vagally mediated, bradycardia-associated (rather than bradycardia-dependent), and paroxysmal AV nodal (AH) block. The decision regarding the use of pacemakers was not based on QRS duration or on patterns (or site) of block but on the underlying clinical settings and the correlation of symptoms with maximal ventricular (R-R) pauses. However, more studies are required to extend our findings, especially to other subgroups of patients (or normal individuals) in whom vagally mediated block occurs.
AB - Clinical, surface ECG, and intracardiac findings were analyzed in 20 patients with spontaneous conduction disturbances in whom vagaily mediated AV block could be induced by carotid sinus pressure during electrophysiologic evaluation. The latter demonstrated that the surface ECG pattern attributed to bradycardia-dependent (phase 4), and paroxysmal block within the His bundle and bundle branches could reflect vagally mediated, bradycardia-associated (rather than bradycardia-dependent), and paroxysmal AV nodal (AH) block. The decision regarding the use of pacemakers was not based on QRS duration or on patterns (or site) of block but on the underlying clinical settings and the correlation of symptoms with maximal ventricular (R-R) pauses. However, more studies are required to extend our findings, especially to other subgroups of patients (or normal individuals) in whom vagally mediated block occurs.
UR - http://www.scopus.com/inward/record.url?scp=0020505686&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0020505686&partnerID=8YFLogxK
U2 - 10.1016/0002-8703(83)90445-3
DO - 10.1016/0002-8703(83)90445-3
M3 - Article
C2 - 6869199
AN - SCOPUS:0020505686
VL - 106
SP - 92
EP - 99
JO - American Heart Journal
JF - American Heart Journal
SN - 0002-8703
IS - 1 PART 1
ER -