Abstract
His bundle electrograms were recorded in 2 patients with ectopic beats arising in accessory atrioventricular tracts. Case 1 had Wolff-Parkinson-White (WPW) type A and a left-sided Kent tract with a short effective refractory period. Though ectopic impulse formation most probably occurred within the Kent tract itself, a vulnerability-related origin in the ventricular muscle close to the distal end of the Kent tract could not be excluded. In Case 2, with a Mahaim tract extending from His bundle to ventricles, there were three types of QRS morphologies resulting from: (a) atrioventricular conduction exclusively through the normal pathway; (b) atrioventricular conduction through both, normal pathway, and Mahaim tract; and (c) ectopic impulse formation in the Mahaim tract. Specialized electrophysiological studies were essential to diagnose these unusual arrhythmias.
| Original language | English |
|---|---|
| Pages (from-to) | 1173-1178 |
| Number of pages | 6 |
| Journal | Heart |
| Volume | 38 |
| Issue number | 11 |
| DOIs | |
| State | Published - Jan 1 1976 |
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ASJC Scopus subject areas
- Gastroenterology
- Cardiology and Cardiovascular Medicine
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His bundle recordings in diagnosis of impulse formation in Kent and Mahaim tracts. / Castellanos, Agustin; Sung, Ruey J.; Castillo, Cesar A.; Agha, Abdul S.; Befeler, Benjamin; Myerburg, Robert J.
In: Heart, Vol. 38, No. 11, 01.01.1976, p. 1173-1178.Research output: Contribution to journal › Article
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TY - JOUR
T1 - His bundle recordings in diagnosis of impulse formation in Kent and Mahaim tracts
AU - Castellanos, Agustin
AU - Sung, Ruey J.
AU - Castillo, Cesar A.
AU - Agha, Abdul S.
AU - Befeler, Benjamin
AU - Myerburg, Robert J
PY - 1976/1/1
Y1 - 1976/1/1
N2 - His bundle electrograms were recorded in 2 patients with ectopic beats arising in accessory atrioventricular tracts. Case 1 had Wolff-Parkinson-White (WPW) type A and a left-sided Kent tract with a short effective refractory period. Though ectopic impulse formation most probably occurred within the Kent tract itself, a vulnerability-related origin in the ventricular muscle close to the distal end of the Kent tract could not be excluded. In Case 2, with a Mahaim tract extending from His bundle to ventricles, there were three types of QRS morphologies resulting from: (a) atrioventricular conduction exclusively through the normal pathway; (b) atrioventricular conduction through both, normal pathway, and Mahaim tract; and (c) ectopic impulse formation in the Mahaim tract. Specialized electrophysiological studies were essential to diagnose these unusual arrhythmias.
AB - His bundle electrograms were recorded in 2 patients with ectopic beats arising in accessory atrioventricular tracts. Case 1 had Wolff-Parkinson-White (WPW) type A and a left-sided Kent tract with a short effective refractory period. Though ectopic impulse formation most probably occurred within the Kent tract itself, a vulnerability-related origin in the ventricular muscle close to the distal end of the Kent tract could not be excluded. In Case 2, with a Mahaim tract extending from His bundle to ventricles, there were three types of QRS morphologies resulting from: (a) atrioventricular conduction exclusively through the normal pathway; (b) atrioventricular conduction through both, normal pathway, and Mahaim tract; and (c) ectopic impulse formation in the Mahaim tract. Specialized electrophysiological studies were essential to diagnose these unusual arrhythmias.
UR - http://www.scopus.com/inward/record.url?scp=0017102391&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0017102391&partnerID=8YFLogxK
U2 - 10.1136/hrt.38.11.1173
DO - 10.1136/hrt.38.11.1173
M3 - Article
C2 - 64251
AN - SCOPUS:0017102391
VL - 38
SP - 1173
EP - 1178
JO - Heart
JF - Heart
SN - 1355-6037
IS - 11
ER -