Transseptal Puncture
A procedure to access the left atrium by puncturing the atrial septum from the right atrium. Essential technique for left-sided ablation procedures.
Full Definition
Transseptal puncture is a fundamental technique in cardiac electrophysiology that involves creating an iatrogenic communication between the right and left atria by puncturing the atrial septum, typically at the fossa ovalis. This procedure is performed using specialized needles and sheaths under fluoroscopic and often echocardiographic guidance. The technique is essential for accessing the left atrium during procedures such as atrial fibrillation ablation, left atrial flutter ablation, and mitral valve interventions. Proper technique and anatomical knowledge are crucial to avoid complications such as perforation of the aorta or pericardial space.
Usage
Usage note: Critical to distinguish from other cardiac access techniques. Often performed multiple times in complex procedures.
In Context
- "Transseptal puncture was performed under ICE guidance with visualization of the fossa ovalis." — procedure report
- "Double transseptal access was obtained to facilitate simultaneous mapping and ablation catheters." — operative note