Percutaneous injection of hemostatic agents for severe blunt hepatic trauma: an experimental study

This study was designed to evaluate whether percutaneous injection of hemostatic agents under the guidance of contrast-enhanced ultrasound (CEUS) can stop hemorrhage from severe hepatic trauma. Eighteen dogs were impacted by a miniature impactor to create blunt hepatic trauma. Fourteen with appropriate liver lesions were divided into two groups: the treatment group (n = 7) and the control group (n = 7). In the treatment group, hemocoagulase atrox and α-cyanoacrylate were respectively injected into the injury sites and transected micro-vessels under the guidance of CEUS. In the control group, normal saline was injected into the injury sites. CEUS and CT were performed at 3, 7, 14, and 21 days after the focal injection. Surviving animals were killed on the 21st day for pathologic examination. All animals of the treatment group survived. Three dogs of the control group died in the first 24 h. In the treatment group, CEUS and CT demonstrated that hepatic lesions became smaller gradually from the 3rd to the 21st day after injection. The focal injection of hemostatic agents under the guidance of CEUS can stop hemorrhage from hepatic trauma of grade III~IV or IV. During the period of 3 weeks, no side effect was found.