A new technique for microvascular anastomosis: eversion with 3 horizontal mattress sutures

Area of Science:

• Vascular Surgery
• Microsurgery
• Surgical Innovation

Background:

• Microvascular anastomosis is crucial for reconstructive surgery.
• The classic interrupted suture technique is widely used but can be time-consuming.
• Developing efficient and effective anastomosis techniques is an ongoing area of research.

Purpose of the Study:

• To evaluate a novel microvascular anastomosis technique using three horizontal mattress sutures.
• To compare the efficacy and safety of the new technique against the classic interrupted suture method.
• To assess patency rates and histopathological outcomes of the new technique.

Main Methods:

• A comparative experimental study involving 30 Wistar albino rats.
• Division into two groups: Group 1 (classic interrupted suture) and Group 2 (new technique with 3 horizontal mattress sutures).
• Assessment of anastomosis patency at immediate, 1-hour, and 3-week intervals; histopathological evaluation using light microscopy.

Main Results:

• The new technique demonstrated a significantly shorter mean anastomosis time (15 minutes) compared to the classic method (21 minutes) (P < 0.01).
• Both techniques achieved 100% patency at 1 hour.
• At 3 weeks, patency rates were 100% for the new technique and 93.4% for the classic technique, with no statistically significant difference (P = 0.05).
• Histopathological analysis evaluated lumen patency, intimal/medial damage, inflammation, and granulation.

Conclusions:

• The microvascular anastomosis technique using three horizontal mattress sutures is a viable alternative to the classic method.
• This new technique offers a statistically significant reduction in procedure time.
• With correct incision placement, the technique is suitable for both experimental and clinical microvascular surgery.