Key result
EBCTA visualizes a prominent Thebesian valve to guide epicardial resynchronization after failed endocardial pacing.
Why the study?
Detailed imaging of the Thebesian valve is needed to identify anomalies that may impede endocardial approaches to left ventricular pacing in resynchronization therapy.
Case Report (n=1)
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Electron beam CT angiography is useful for pre-procedural planning of coronary sinus instrumentation in cardiac resynchronization therapy to identify anomalies that may complicate lead placement.
We report visualization of a prominent coronary sinus os valve (Thebesian valve), by electron beam computed tomographic angiography, which impeded an endocardial approach to left ventricular pacing. Resynchronization therapy was therefore performed with an epicardial approach to left ventricular lead placement. Electron beam computed tomographic angiography can provide detailed information for coronary sinus instrumentation, including anomalies potentially affecting the approach to resynchronization therapy.
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Shinbane et al. (2004) conducted a case report in Prominent Thebesian valve requiring resynchronization therapy (n=1). Electron beam computed tomographic angiography was evaluated on Visualization of coronary sinus os valve and successful resynchronization therapy. Electron beam computed tomographic angiography successfully visualized a prominent Thebesian valve, guiding an epicardial approach for resynchronization therapy after endocardial pacing was impeded.
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