title: [A COMPARATIVE STUDY ON MAGNETIC COMPRESSIVE ANASTOMOSIS AND TRADITIONAL HAND-SUTURING TECHNOLOGY IN CANINE FEMORAL ARTERY ANASTOMOSIS].
abstract: OBJECTIVE
  To investigate the advantages of magnetic compressive anastomosis (MCA) for non-suture femoral artery anastomosis.
  
  
  METHODS
  Twelve adult health mongrel dogs, weighing (16.5 ± 3.6) kg, were selected for in situ end-to-end anastomosis of the femoral artery. One side of the femoral artery was anastomosised with MCA (group A) and the other side of the femoral artery was anastomosised by hand-suturing (group B). The anastomosis time, complications, and vascular bursting pressure were recorded. Gross observation, histological staining (HE and Masson), and scanning electron microscopy observation were performed at 2, 4, 12, and 24 weeks postoperatively.
  
  
  RESULTS
  The anastomosis time in group A [(3.89 ± 1.16) minutes] was significantly shorter than that in group B [(14.16 ± 3.72) minutes] (t = 14.226, P = 0.000). The complication rate of group A (0) was significantly lower than that of group B (75%) (P = 0.000). At immediate, 4 and 12 weeks after operation, the vascular bursting pressure of anastomosis site in group A was more than 280 mm Hg (1 mm Hg = 0.133 kPa), and was (140.11 ± 15.23), (180.31 ± 24.55), and more than 280 mm Hg in group B, showing significant differences at immediate and 4 weeks (P < 0.05), but no significant difference at 12 weeks (P > 0.05). In group A at 4 weeks, good intima contact, smooth endothelium, and regular arrangement of endothelial cells were observed; at 12 weeks, chronic inflammation was present, with a few lymphocytes infiltration; and at 24 weeks, inflammation significantly decreased. But in group B, obvious suture foreign body and scar formation were observed, which led to uneven surface with lumen incomplete intima, and irregular endothelial cells in arrangement disorder.
  
  
  CONCLUSIONS
  Compared with traditional hand-suturing, the MCA has the advantages of shorter operation time, higher patency rate, less complication, and better healing at the anastomotic site. Non-suture anastomosis of the femoral artery by MCA can achieve reliable results.
authors.forename: Shiqi
authors.initials: S
authors.lastname: Liu
authors.forename: Peng
authors.initials: P
authors.lastname: Lei
authors.forename: Yi
authors.initials: Y
authors.lastname: Lü
authors.forename: Zheng
authors.initials: Z
authors.lastname: Guan
authors.forename: Rui
authors.initials: R
authors.lastname: Gao
authors.forename: Weijie
authors.initials: W
authors.lastname: Yao
authors.forename: Guoxin
authors.initials: G
authors.lastname: Dang
authors.forename: Yankui
authors.initials: Y
authors.lastname: Liu
mesh_terms: D000714:Anastomosis, Surgical / Q000379:methods*; D000818:Animals; D001166:Arteriovenous Shunt, Surgical / Q000295:instrumentation / Q000379:methods*; D004285:Dogs; D004730:Endothelium, Vascular; D005263:Femoral Artery / Q000503:physiopathology / Q000601:surgery*; D008280:Magnetics / Q000295:instrumentation* / Q000379:methods; D013537:Sutures; D017539:Tunica Intima; D014654:Vascular Patency; D014656:Vascular Surgical Procedures / Q000295:instrumentation / Q000379:methods*