bicaval cannulation
Cannulation technique using separate cannulas in the superior and inferior vena cava for venous drainage during cardiopulmonary bypass.
Full Definition
A venous cannulation technique in cardiac surgery where separate cannulas are placed in both the superior vena cava (SVC) and inferior vena cava (IVC) rather than using a single atrial cannula. This approach provides complete venous drainage while allowing the surgeon to open the right atrium for intracardiac procedures without air entrainment or blood return to the operative field. Bicaval cannulation is essential for procedures involving the tricuspid valve, atrial septal defects, or any surgery requiring a bloodless right atrial cavity. The technique requires careful positioning and securing of both cannulas to prevent dislodgement during manipulation of the heart.
Usage
Usage note: Always specify 'bicaval' rather than 'dual venous' in operative reports for precision.
In Context
- "The surgeon performed bicaval cannulation to facilitate repair of the atrial septal defect." — operative report
- "Bicaval cannulation was chosen over single atrial cannulation to prevent air embolism during the mitral valve procedure." — surgical technique description