A simple and novel technique for training in microvascular suturing in a rat model

Area of Science:

• Microsurgery
• Vascular Surgery Training

Background:

• Microvascular clamps, essential for anastomosis training, present challenges like cost, availability, and sterilization issues.
• A need exists for simpler, more accessible training models in microsurgery.

Purpose of the Study:

• To introduce and evaluate a novel microvascular training model that does not utilize microvascular clamps.
• To assess the efficacy of a silk slipknot technique for microvascular anastomoses.

Main Methods:

• The study utilized femoral vessels from Sprague Dawley rats for training.
• A 4-0 silk slipknot was employed for arterio-arterial and veno-venous anastomoses.
• Rats were divided into slipknot and vascular clamp groups, with assessments of ischemic time, patency, and histology.

Main Results:

• No significant differences in ischemic time or postoperative complications like thrombosis were observed between groups.
• Both techniques demonstrated comparable patency rates and minimal histologic damage to the vessel wall.
• No intraoperative bleeding or postoperative thrombosis occurred.

Conclusions:

• A simple, effective microsurgical suture technique using a silk slipknot for microvascular anastomosis training was demonstrated in a rat model.
• The silk slipknot technique is a cost-effective, readily available, and less cumbersome alternative to traditional microvascular clamps.
• This method provides a viable alternative for microsurgical anastomosis training.