Document Detail

Absence of left atrium-coronary sinus musculature electrical connection at coronary sinus ostium unmasked by unique double coronary sinus potentials pattern.
MedLine Citation:
PMID:  21245636     Owner:  NLM     Status:  In-Data-Review    
We describe a 77-year-old man with Wolff-Parkinson-White syndrome exhibiting double coronary sinus (CS) potentials during retrograde conduction over accessory pathway (AP). The first, low-frequency potential (DP1) was first recorded in the left posterolateral region, while the second, higher frequency signal (DP2) was recorded in a lateral-to-septal direction. The two signals were fused near the left lateral wall. Successful ablation of the AP was obtained at its ventricular insertion site in the postero-septal region. The unexpectedly delayed activation of the paraseptal RA following activation of the paraseptal left atrium (DP1) can be explained by the absence of a LA-CS musculature (CSM) electrical connection at the proximal CS, which forces a detour of the activation wavefront from LA to RA via the distal CS (DP2). This is a rare case exhibiting unique double CS potentials which unmasked the absence of a LA-CSM electrical connection at CS ostium.
Akihiro Saito; Yoshiaki Kaneko; Tadashi Nakajima; Tadanobu Irie; Masaki Ota; Toshimitsu Kato; Takafumi Iijima; Mio Tamura; Hiroaki Kobayashi; Masahiko Kurabayashi
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Publication Detail:
Type:  Journal Article     Date:  2011-01-15
Journal Detail:
Title:  Internal medicine (Tokyo, Japan)     Volume:  50     ISSN:  1349-7235     ISO Abbreviation:  Intern. Med.     Publication Date:  2011  
Date Detail:
Created Date:  2011-01-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9204241     Medline TA:  Intern Med     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  125-9     Citation Subset:  IM    
Department of Medicine and Biological Science, Gunma University Graduate School of Medicine, Japan.
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