A technique for preclotting vascular grafts

Area of Science:

• Biomaterials Science
• Vascular Surgery
• Hemostasis

Background:

• Porous vascular grafts require effective sealing to prevent leakage and ensure patency.
• Current sealing methods may involve autologous blood or be less effective in anticoagulated patients.

Purpose of the Study:

• To evaluate a novel ex vivo sealing technique for porous vascular grafts.
• To assess the safety and efficacy of cryoprecipitate and topical thrombin for graft sealing.

Main Methods:

• Grafts were soaked for 30 minutes in cryoprecipitate, followed by a 10-minute immersion in topical thrombin.
• The technique was applied prior to implantation in patients undergoing various aortic procedures.

Main Results:

• The cryoprecipitate and thrombin method achieved absolute graft competence in all treated grafts.
• This technique was successfully employed in 12 patients with valve conduits and 6 with ascending aorta patch enlargement.
• The method does not utilize patient blood and is effective in heparinized patients.

Conclusions:

• This cryoprecipitate and topical thrombin soak is a safe and secure method for sealing porous vascular grafts.
• The technique offers a reliable solution for graft sealing, particularly in anticoagulated patients.
• It provides a bloodless, effective alternative for preparing vascular grafts for surgical use.