microvascular anastomosis
Pronunciation: MY-kro-VAS-kyoo-lar an-as-toh-MOH-sis
Surgical connection of blood vessels typically less than 2mm in diameter using microsurgical techniques.
Full Definition
Microvascular anastomosis involves the precise surgical connection of small blood vessels using operating microscopes and specialized microsurgical instruments to create vascular continuity for free tissue transfer or replantation procedures. The technique requires meticulous attention to vessel preparation, tension-free approximation, and precise suture placement using 8-0 to 11-0 suture material. Success depends on factors including vessel size match, adequate flow, and prevention of thrombosis through proper technique and post-operative monitoring. Common applications in maxillofacial surgery include free flap reconstruction for major defects following trauma or tumor resection. Patency rates exceeding 95% are expected with experienced microsurgeons.
Usage
Usage note: Specify vessel size and suture material when describing technique in operative reports.
In Context
- "The fibula free flap required microvascular anastomosis of the peroneal vessels to facial vessels." — reconstructive surgery report
- "Successful microvascular anastomosis was confirmed with Doppler ultrasound post-operatively." — post-operative monitoring notes