bicaval cannulation
Pronunciation: bye-KAY-val
Placement of separate cannulas in both the superior and inferior vena cavae for venous drainage during cardiac surgery.
Full Definition
Bicaval cannulation involves the insertion of individual cannulas into both the superior vena cava (SVC) and inferior vena cava (IVC) to achieve complete venous drainage during cardiopulmonary bypass. This technique provides superior venous return compared to single atrial cannulation and is essential for procedures requiring access to the right atrium, tricuspid valve, or when complete cardiac isolation is needed. Caval tapes or tourniquets are typically placed around each vena cava to prevent air entrainment and ensure complete venous drainage.
Usage
Usage note: Always specify whether caval tapes or tourniquets were used for complete isolation.
In Context
- "Bicaval cannulation was performed to provide optimal exposure for the tricuspid valve repair." — operative report
- "The procedure required bicaval cannulation with caval tapes to achieve complete cardiac isolation." — surgical technique note