Objective: To determine if use of reabsorbing mesh stops hemorrhage and avoids spleen removal in abdominal trauma. Design: Experimental study. Setting: Experimental Surgery Service, of both UNMSM and Children’s Hospital. Materials: Reabsorbing mesh (polyglycolic acid), rats, anesthesia, minor surgery equipment, materials for anatomical tissues. Interventions: Under general anesthesia rats were opened by midline incision to expose the spleen, which was injured in 1st, 2nd and 3rd degrees, then covered with reabsorbing mesh, fixing with catgut 3/0 and pressing until bleeding was restrained; then abdominal cavity was closed with vicryl 3/0. Clinical evaluation was done at 24, 48 and 72 hours post-surgery to observe survival, then re-opened randomly at 15, 30 days and 3 months to see the presence of adhesions and mesh reabsorption. Main outcome measures: Survival, adhesions, mesh reabsorpt...