Coronary sinus-ventricular accessory connections producing posteroseptal and left posterior accessory pathways - Incidence and electrophysiological identification

被引:136
作者
Sun, YX
Arruda, M
Otomo, K
Beckman, K
Nakagawa, H
Calame, J
Po, S
Spector, P
Lustgarten, D
Herring, L
Lazzara, R
Jackman, W
机构
[1] Univ Oklahoma, Hlth Sci Ctr, Cardiac Arrhythmia Res Inst, Oklahoma City, OK 73104 USA
[2] Univ Oklahoma, Hlth Sci Ctr, Dept Med, Oklahoma City, OK 73104 USA
关键词
Wolff-Parkinson-White syndrome; coronary sinus; angiography;
D O I
10.1161/01.CIR.0000028464.12047.A6
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background-The coronary sinus (CS) has a myocardial coat (CSMC) with extensive connections to the left and right atria. We postulated that some posteroseptal and left posterior accessory pathways (CSAPs) result from connections between a cuff of CSMC extending along the middle cardiac vein (MCV) or posterior coronary vein (PCV) and the ventricle. The purpose of the present study was to use CS angiography and mapping to define and determine the incidence of CSAPs and determine the relationship to CS anatomy. Methods and Results-CSAP was defined by accessory pathway (AP) potential or earliest activation in the MCV or PCV and late activation at anular endocardial sites. A CSAP was identified in 171 of 480 patients undergoing ablation of a posteroseptal or left posterior AP. CS angiography revealed a CS diverticulum in 36 (21%) and fusiform or bulbous enlargement of the small cardiac vein, MCV, or CS in 15 (9%) patients. The remaining 120 (70%) patients had an angiographically normal CS. A CSMC extension potential (CSE), like an AP potential, was recorded in the MCV in 98 (82%), in the PCV in 13 (11%), in both the MCV and PCV in 6 (5%), and in the CS in 3 (2%) of 120 patients. CSMC potentials were recorded between the timing of atrial and CSE potentials. Conclusions-CSAPs result from a connection between a CSMC extension (along the MCV or PCV) and the ventricle. The CS is angiographically normal in most patients.
引用
收藏
页码:1362 / 1367
页数:6
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