Abstract
His bundle recordings were performed in 2 patients in whom AV nodal bypass tracts coexisted with intermittent AV conduction disturbances occurring below the site from which the His bundle deflection was recorded. Case 1 had: (a) tachycardia dependent right bundle branch block, (b) persistent HV prolongation, and (c) bradycardia dependent AV block. Case 2 showed: (a) intra atrial conduction delay, (b) tachycardia dependent left bundle branch block with HV prolongation, (c) bradycardia dependent HV conduction disturbance, (d) tachycardia bradycardia syndrome of an unusual type; the latter presumably resulted, during atrial flutter, from the alternation of rapid AH conduction through the bypass tract with intermittent (complete) distal His bundle block or bilateral bundle branch block.
| Original language | English |
|---|---|
| Pages (from-to) | 38-43 |
| Number of pages | 6 |
| Journal | British Heart Journal |
| Volume | 39 |
| Issue number | 1 |
| State | Published - Sep 5 1977 |
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ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
Cite this
Intermittent AV conduction disturbances in patients with AV nodal bypass tracts. Possible mechanisms of unusual variant of tachycardia bradycardia syndrome. / Castellanos, Agustin; Sung, R. J.; Befeler, B.; Mayorga-Cortes, A.; Conde, C.; Mallon, S. M.; Myerburg, Robert J.
In: British Heart Journal, Vol. 39, No. 1, 05.09.1977, p. 38-43.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Intermittent AV conduction disturbances in patients with AV nodal bypass tracts. Possible mechanisms of unusual variant of tachycardia bradycardia syndrome
AU - Castellanos, Agustin
AU - Sung, R. J.
AU - Befeler, B.
AU - Mayorga-Cortes, A.
AU - Conde, C.
AU - Mallon, S. M.
AU - Myerburg, Robert J
PY - 1977/9/5
Y1 - 1977/9/5
N2 - His bundle recordings were performed in 2 patients in whom AV nodal bypass tracts coexisted with intermittent AV conduction disturbances occurring below the site from which the His bundle deflection was recorded. Case 1 had: (a) tachycardia dependent right bundle branch block, (b) persistent HV prolongation, and (c) bradycardia dependent AV block. Case 2 showed: (a) intra atrial conduction delay, (b) tachycardia dependent left bundle branch block with HV prolongation, (c) bradycardia dependent HV conduction disturbance, (d) tachycardia bradycardia syndrome of an unusual type; the latter presumably resulted, during atrial flutter, from the alternation of rapid AH conduction through the bypass tract with intermittent (complete) distal His bundle block or bilateral bundle branch block.
AB - His bundle recordings were performed in 2 patients in whom AV nodal bypass tracts coexisted with intermittent AV conduction disturbances occurring below the site from which the His bundle deflection was recorded. Case 1 had: (a) tachycardia dependent right bundle branch block, (b) persistent HV prolongation, and (c) bradycardia dependent AV block. Case 2 showed: (a) intra atrial conduction delay, (b) tachycardia dependent left bundle branch block with HV prolongation, (c) bradycardia dependent HV conduction disturbance, (d) tachycardia bradycardia syndrome of an unusual type; the latter presumably resulted, during atrial flutter, from the alternation of rapid AH conduction through the bypass tract with intermittent (complete) distal His bundle block or bilateral bundle branch block.
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UR - http://www.scopus.com/inward/citedby.url?scp=0017349780&partnerID=8YFLogxK
M3 - Article
C2 - 831736
AN - SCOPUS:0017349780
VL - 39
SP - 38
EP - 43
JO - Heart
JF - Heart
SN - 1355-6037
IS - 1
ER -