title: [Experimental study on the hemostatic properties of collagen sponge].
abstract: OBJECTIVE
  To validate the hemostatic properties of collagen sponge made in China.
  
  
  METHODS
  The experimental model of superficial cut of liver was established in 20 Sprague-Dawley adult rats, which were divided into two groups randomly. Collagen sponge or gelatin sponge was used to cover the cut respectively. Hemostatic result was observed. Afterwards, standard liver trauma model by resection left front liver lobe was made, wound was treated with collagen sponge or gelatin sponge respectively. Hemostatic result was observed. Concurrent hemostatic time and bleeding amount were noted. At 7, 14 and 20 days after operation, intra-abdominal adhension, infection and healing state of liver were observed by exploratory laparotomy. The histological changes of regenerate liver tissue were observed by microscopy.
  
  
  RESULTS
  Collagen sponge adhered to wound well. Concurrent hemostatic time and bleeding amount in collagen sponge group were superior to those of gelatin sponge (P < 0.05). The histological examination showed that collagen sponge was absorbed and degraded rapidly, regenerative hepatocytes could be induced.
  
  
  CONCLUSIONS
  Collagen sponge has fine hemostatic properties and can induce regeneration of hepatocytes effectively. It is worth popularizing for its convenience in clinical application and its properties of rapid degradation and absorption.
authors.affiliation: Department of Orthopedic Surgery, Changzheng Hospital, Second Military Medical University, Shanghai, P. R. China 200003.
authors.forename: Y S
authors.initials: YS
authors.lastname: Wang
authors.forename: C L
authors.initials: CL
authors.lastname: Hou
authors.forename: A M
authors.initials: AM
authors.lastname: Chen
mesh_terms: D000818:Animals; D003094:Collagen / Q000627:therapeutic use*; D005781:Gelatin Sponge, Absorbable / Q000627:therapeutic use*; D006470:Hemorrhage / Q000503:physiopathology / Q000628:therapy*; D006487:Hemostasis; D006489:Hemostatic Techniques; D008099:Liver / Q000293:injuries; D008115:Liver Regeneration; D008297:Male; D051381:Rats; D017207:Rats, Sprague-Dawley
chemical_list: D003094:Collagen