When preparing to irrigate a wound, attach a 19G needle or catheter to a 35-ml  piston syringe. This setup delivers an irrigation pressure of 8 psi, which is  effective in cleaning the wound and reducing the risk of trauma and wound  infection. To prevent tissue damage or, in an abdominal wound, intestinal  perforation, avoid forcing the needle or catheter into the wound.
Irrigate the wound with gentle pressure until the solution returns clean. Then position the emesis basin under the wound to collect any remaining drainage.
 
