A modified method of continuous venous anastomosis in microsurgery

Area of Science:

• Vascular Surgery
• Microsurgery
• Surgical Techniques

Background:

• Continuous suture techniques for vascular anastomosis risk vessel constriction.
• A modified continuous suture method for end-to-end venous microanastomosis has been developed to prevent this issue.

Purpose of the Study:

• To present and evaluate a modified continuous suture technique for end-to-end venous microanastomosis.
• To compare its efficacy against the conventional interrupted suture technique in terms of time, patency, and vessel constriction.

Main Methods:

• A modified continuous suture technique was compared to the conventional interrupted suture technique in rat femoral veins.
• Forty-eight rats were used, with each serving as its own control.
• Vessel patency, morphometry, and corrosion casts were assessed postoperatively at 30 minutes, 1 week, and 1 month.

Main Results:

• The modified continuous technique was significantly faster, taking an average of 9.8 minutes compared to 17.7 minutes for the interrupted technique (p < 0.05).
• All anastomoses remained patent throughout the study period.
• Vessel morphometry showed no significant difference in luminal surface area between the two techniques at 1 week and 1 month, indicating no constriction.

Conclusions:

• The modified continuous suture technique is a faster and safe alternative for end-to-end microvenous anastomosis.
• This technique effectively prevents vessel constriction, a common complication of continuous suturing in vascular surgery.