PMID- 11716242
OWN - NLM
STAT- MEDLINE
DCOM- 20021122
LR  - 20190817
IS  - 0047-1828 (Print)
IS  - 0047-1828 (Linking)
VI  - 65
IP  - 11
DP  - 2001 Nov
TI  - Linking phenomenon in dual atrioventricular nodal pathways.
PG  - 937-40
AB  - The linking phenomenon is an electrophysiological phenomenon of conduction 
      between 2 different pathways, such as bundle branches, atrioventricular node 
      (AVN) and accessory pathways. The present study used electrophysiological studies 
      to investigate this phenomenon in 14 patients with dual AVN pathways. Decremental 
      ramp pacing at intervals of 10 ms was carried out in high right atrium until the 
      atrio-His (A-H) interval was abruptly prolonged (onset), then subsequent 
      incremental ramp pacing at intervals of 10 ms proceeded until the A-H interval 
      abruptly shortened (offset). The linking window (LW) was defined as the 
      difference between the paced cycle lengths of the offset and the onset. The 
      linking phenomenon occurred in 9 patients (64%). The onset depended on the 
      functional refractory period of the fast pathway and once the linking was 
      established in the dual pathways, the LW was related to the difference between 
      the A-H interval immediately before and after the restoration of anterograde fast 
      pathway conduction. These findings suggest that the linking phenomenon in dual 
      AVN pathways occurs because of anterograde conduction block in the fast pathway 
      and the subsequent concealed retrograde conduction of impulses propagated from 
      the slow pathway.
FAU - Itagaki, T
AU  - Itagaki T
AD  - The First Department of Internal Medicine, Kobe University School of Medicine, 
      Japan.
FAU - Ohnishi, Y
AU  - Ohnishi Y
FAU - Inoue, T
AU  - Inoue T
FAU - Yokoyama, M
AU  - Yokoyama M
LA  - eng
PT  - Clinical Trial
PT  - Journal Article
PL  - Japan
TA  - Jpn Circ J
JT  - Japanese circulation journal
JID - 7806868
SB  - IM
MH  - Adolescent
MH  - Adult
MH  - Aged
MH  - Atrioventricular Node/*physiopathology
MH  - Electrocardiography/methods
MH  - Female
MH  - Heart Block/*diagnosis/physiopathology
MH  - Heart Conduction System/*physiopathology
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - Pacemaker, Artificial
MH  - Tachycardia, Atrioventricular Nodal Reentry/diagnosis/physiopathology
EDAT- 2001/11/22 10:00
MHDA- 2002/11/26 04:00
CRDT- 2001/11/22 10:00
PHST- 2001/11/22 10:00 [pubmed]
PHST- 2002/11/26 04:00 [medline]
PHST- 2001/11/22 10:00 [entrez]
AID - 10.1253/jcj.65.937 [doi]
PST - ppublish
SO  - Jpn Circ J. 2001 Nov;65(11):937-40. doi: 10.1253/jcj.65.937.