transseptal puncture
A procedure involving puncture of the atrial septum to gain access to the left atrium during cardiac interventions.
Full Definition
Transseptal puncture is an invasive cardiac procedure that involves creating a controlled perforation through the interatrial septum (specifically the fossa ovalis) to gain access to the left atrium from the venous circulation. This technique is essential for many left-sided cardiac interventions, particularly catheter ablation procedures for atrial fibrillation and left atrial tachycardias. The procedure is typically performed using specialized needles and sheaths under fluoroscopic and often intracardiac echocardiographic guidance to ensure safe passage while avoiding injury to surrounding structures such as the aorta, atrial wall, or coronary sinus. Multiple punctures may be required for complex procedures requiring several catheters in the left atrium.
Usage
Usage note: Specify guidance method and number of punctures; document complications if any occur.
In Context
- "Transseptal puncture was performed under ICE guidance to access the left atrium." — Procedure description
- "Double transseptal puncture facilitated the use of multiple catheters during the ablation." — Operative report