anastomosis
Pronunciation: /ə-ˌnas-tə-ˈmō-səs/
A surgical connection between two blood vessels, typically in bypass surgery.
Full Definition
In cardiovascular surgery, anastomosis refers to the surgical connection or joining of two blood vessels, creating a pathway for blood flow. This technique is fundamental to bypass surgery, where grafts are connected to native vessels to circumvent blockages. Anastomoses can be end-to-side (graft attached to the side of a vessel) or end-to-end (connecting the ends of two vessels). The quality of the anastomosis is critical for graft patency and long-term success. Different suture techniques and materials are used depending on vessel size and location. Common sites include proximal anastomosis (to the aorta) and distal anastomosis (to the target coronary vessel).
Usage
Usage note: Plural form is anastomoses; distinguish from anatomical anastomosis (natural connection)
In Context
- "The distal anastomosis was performed to the left anterior descending artery using 7-0 polypropylene suture." — operative report
- "All anastomoses were checked for hemostasis before weaning from bypass." — operative report