Cited by 13Cardiac Arrhythmias and TreatmentsCardiac electrophysiology and arrhythmiasAtrial Fibrillation Management and Outcomes

The undetermined geometrical factors contributing to the transverse conduction block of the crista terminalis

MORITA, NORISHIGE, KOBAYASHI, YOSHINORI, HORIE, TSUTOMU, IWASAKI, YU‐KI, HAYASHI, MEISO, MIYAUCHI, YASUSHI, ATARASHI, HIROTSUGU, KATOH, TAKAO +1 more·2009·Pacing and Clinical Electrophysiology

Abstract

BACKGROUND: The crista terminalis (CT) is known to be a functional barrier during typical atrial flutter (AFL). The relationship between the CT structural characteristics and its transverse conduction block, however, has not been understood well. METHODS: This study consisted of AFL (group 1, N = 15) and non-AFL patients (group 2, N = 13). The CT structural characteristics were determined with intracardiac echocardiography. A 20-pole electrode catheter was located along the CT and pacing at progressively faster rates from either low anterolateral right atrium (LRA) or coronary sinus (CS) was applied. RESULTS: The CT height, width, and area were significantly greater in group 1 than in group 2 (P < 0.001). In both groups, at the longest pacing cycle length during CS pacing resulting in CT transverse conduction block at some levels, the width and area were significantly greater at the levels with block than at those without block. During LRA pacing, the area was also significantly larger at the levels with block than at those without in group 1, but not in group 2. The slope angle of CT ridge was significantly steeper at the levels with block than at those without in both groups (P < 0.01), but that was not the case with CS pacing. CT arborization in its inferior portion was more frequently documented in group 1 than group 2 (P < 0.05). CONCLUSIONS: The CT structural characteristics that may influence its transverse conduction differ between LRA and CS pacing. Steep slope and arborization of the CT are implicated as a geometric factor in its transverse conduction block.

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Crossref · 10.1111/j.1540-8159.2009.02402.x

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Authors
MORITA, N., KOBAYASHI, Y., HORIE, T., IWASAKI, Y., HAYASHI, M., MIYAUCHI, Y., ATARASHI, H., KATOH, T., & MIZUNO, K.
Affiliations
  • Nippon Medical School (JP)
  • Nippon Medical School Tama Nagayama Hospital (JP)
Corresponding author
MORITA, NORISHIGE
Venue
Pacing and Clinical Electrophysiology
Publisher
Wiley
Published
2009-06-23
Volume
32
Issue
7
Pages
868-878
ISSN
  • 0147-8389 (ISSN-L)
  • 1540-8159
OpenAlex
W2110697254
Cited by
12
References
38
Citations by year
2022: 2 · 2019: 2 · 2018: 2 · 2017: 2 · 2016: 2 · 2012: 1
FWCI
0.43
Type
journal article
Language
en
Open access
closed
Locations
  • Pacing and Clinical Electrophysiology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac Arrhythmias and Treatments
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Cardiac electrophysiology and arrhythmias
  • Health Sciences › Medicine › Cardiology and Cardiovascular Medicine › Atrial Fibrillation Management and Outcomes
Keywords
crista terminalis, atrial flutter, right atrium, coronary sinus, intracardiac echocardiography, atrial conduction
MeSH terms
Atrial Fibrillation, Female, Heart Atria, Heart Conduction System, Humans, Male, Middle Aged, Models, Anatomic, Models, Cardiovascular, Ultrasonography

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