EFFECTIVENESS OF PORTAL BLOOD FLOW OCCLUSION TECHNIQUES WHEN PLANNING EXTENSIVE RESECTIONS IN PATIENTS WITH LIVER ECHINOCOCCOSIS
Abstract
Background. Surgery is the main and an effective treatment option for liver echinococcosis. The choice of surgical strategy for advanced liver echinococcosis given suspected poor liver functional reserve and post-operative hepatic failure remains challenging. Objective. To present and analyze the effectiveness of portal blood flow occlusion techniques in planning two-stage extensive resections in patients with advanced liver echinococcosis. Material and methods. The article presents the outcomes of surgical treatment of 22 patients (8/36,4% men, 14/63,6% women) operated on for advanced liver echinococcosis in the surgical department No.2 of State Autonomous Healthcare Institution ‘Kuzbass Clinical Emergency Hospital named after A.I. M. A. Podgorbunsky’ (Kemerovo). The application of a two-stage extensive resection protocol was used as an entry criterion. Stage I included right portal vein branch occlusion techniques aimed at achieving vicarious hypertrophy of the contralateral lobe. A two-stage extensive resection protocol was applied in case of both expected poor hepatic functional reserve and insufficient future remnant liver volume, accounting for inability of safe implementation of a one-stage extensive resection due to predicted postoperative hepatic failure and a fatal outcome. Results. The applied two-stage resection techniques for the prevention of post-operative hepatic failure are effective in relation to the following indicators: CT volumetry (p<0,05), OK15 ICG (p<0,05), statistical model value (p<0.05). Though the laparotomic technique of the right portal vein branch ligation is of a comparable effectiveness with the laparoscopic one, the latter being less traumatic, which can significantly reduce postoperative hospital stay (p<0,05). Moreover, the laparoscopic technique was not found to cause any specific and nonspecific complications. Conclusions. The applied methods of portal blood flow occlusion are considered to be effective and safe when planning two-stage extensive resections in specialized hepatology centers and can be recommended in case of initial poor hepatic functional reserve and insufficient future remnant liver volume.
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