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  • Title: Extracorporeal portal vein arterialization in man after extended hepatectomy to prevent acute liver failure: a case report.
    Author: Nardo B, Vaccarisi S, Pellegrino V, Cannistrà M, Barcellona E, Cavallari G.
    Journal: Transplant Proc; 2011 May; 43(4):1193-5. PubMed ID: 21620086.
    Abstract:
    Experimental studies have shown that increasing the oxygen supply to the liver through portal vein arterialization (PVA) enhances liver regeneration after partial hepatectomy. Moreover, our previous study demonstrated a beneficial effect of an extracorporeal device to increase the oxygenated blood to the liver and to improve the survival rate of animals subjected to subtotal hepatectomy. Herein we have reported a case of PVA through an extracorporeal device to treat a man after extended hepatectomy leading to acute liver failure (ALF). An obese 69-year-old man (body mass index > 35) affected by multiple metastases from colorectal cancer underwent 80% liver resection; at laparotomy, a steatotic liver was evident due to adjuvant chemotherapy. Moreover, the liver experienced 20 minutes of hepatic ischemia during the resection. At the end of resection he underwent extracorporeal PVA treatment. Blood was withdrawn from the femoral artery and returned into the portal venous system through the umbilical vein. An extracorporeal device was interposed between the outflow and inflow to monitor hemodynamic parameters. Starting from operating room each of six treatments lasted 6 hours per day. Serum and liver samples were collected daily. The extracorporeal device was dismounted at the seventh postoperative day. The postoperative course was assessed at 1 month. The PVA-extracorporeal treatment yielded beneficial effects for subtotal hepatectomy by decreasing serum ammonia, transaminases, and total bilirubin concentration. The international normalized ratio recovered rapidly, remaining significantly lower during the entire postoperative period. The ten-day postoperative period was uneventful. The patient was discharged in good health. He is alive and well at the moment. The arterial blood supply in the portal system through the umbilical vein using an extracorporeal device was easily applicable, efficacious, safe, and cost-effective. It may represent a novel approach to treat patients with potential ALF after subtotal liver resection.
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