Exercise induced atrioventricular block with gap phenomenon in atrioventricular conduction

Authors
Toeda, T Suetake, S Tsuchida, K Takahashi, K Miida, T Oda, H Higuma, N
Citation
T. Toeda et al., Exercise induced atrioventricular block with gap phenomenon in atrioventricular conduction, PACE, 23(4), 2000, pp. 527-529
Citations number
9
Categorie Soggetti
Cardiovascular & Respiratory Systems","Cardiovascular & Hematology Research
Journal title
PACE-PACING AND CLINICAL ELECTROPHYSIOLOGY
ISSN journal
01478389 → ACNP
Volume
23
Issue
4
Year of publication
2000
Part
1
Pages
527 - 529
Database
ISI
SICI code
0147-8389(200004)23:4<527:EIABWG>2.0.ZU;2-0
Abstract
A 54-year-old man with normal atrioventricular (AV) conduction at rest gave a 4-year history of presyncope during exercise. Treadmill testing showed e xercise induced AV block. Electrophysiological study demonstrated rate depe ndent infranodal AV block and abnormal refractory period of the His-Purkinj e system. The gap phenomenon in AV conduction occurred during the programme d stimulation. Supernormal conduction could be considered as the mechanism of the gap phenomenon in this patient.