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Lin X, Shao YM, Zhang RQ, Aji T. Applying LASSO logistic regression for the prediction of biliary complications after ex vivo liver resection and autotransplantation in patients with end-stage hepatic alveolar echinococcosis. Eur J Med Res 2024; 29:301. [PMID: 38812045 PMCID: PMC11134669 DOI: 10.1186/s40001-024-01898-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Accepted: 05/21/2024] [Indexed: 05/31/2024] Open
Abstract
BACKGROUND The purpose of this study was to explore the relevant risk factors associated with biliary complications (BCs) in patients with end-stage hepatic alveolar echinococcosis (HAE) following ex vivo liver resection and autotransplantation (ELRA) and to establish and visualize a nomogram model. METHODS This study retrospectively analysed patients with end-stage HAE who received ELRA treatment at the First Affiliated Hospital of Xinjiang Medical University between August 1, 2010 and May 10, 2023. The least absolute shrinkage and selection operator (LASSO) regression model was applied to optimize the feature variables for predicting the incidence of BCs following ELRA. Multivariate logistic regression analysis was used to develop a prognostic model by incorporating the selected feature variables from the LASSO regression model. The predictive ability, discrimination, consistency with the actual risk, and clinical utility of the candidate prediction model were evaluated using receiver operating characteristic (ROC) curves, calibration plots, and decision curve analysis (DCA). Internal validation was performed by the bootstrapping method. RESULTS The candidate prediction nomogram included predictors such as age, hepatic bile duct dilation, portal hypertension, and regular resection based on hepatic segments. The model demonstrated good discrimination ability and a satisfactory calibration curve, with an area under the ROC curve (AUC) of 0.818 (95% CI 0.7417-0.8958). According to DCA, this prediction model can predict the risk of BCs occurrence within a probability threshold range of 9% to 85% to achieve clinical net benefit. CONCLUSIONS A prognostic nomogram with good discriminative ability and high accuracy was developed and validated to predict BCs after ELRA in patients with end-stage HAE.
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Affiliation(s)
- Xin Lin
- Centre of Digestive and Vascular Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830000, Xinjiang, China
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi, 830000, Xinjiang, China
| | - Ying-Mei Shao
- Centre of Digestive and Vascular Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830000, Xinjiang, China
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi, 830000, Xinjiang, China
| | - Rui-Qing Zhang
- Centre of Digestive and Vascular Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830000, Xinjiang, China
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi, 830000, Xinjiang, China
| | - Tuerganaili Aji
- Centre of Digestive and Vascular Surgery, The First Affiliated Hospital of Xinjiang Medical University, Urumqi, 830000, Xinjiang, China.
- State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi, 830000, Xinjiang, China.
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2
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Wozniak H, Naimimohasses S, Goto T, Sapisochin G, Sayed B, Ghanekar A, Cattral M, Selzner N. Long-Term Outcomes of Recipients of Liver Transplants from Living Donors Treated with a Very Low-Calorie Diet. J Transplant 2024; 2024:9024204. [PMID: 38725471 PMCID: PMC11081753 DOI: 10.1155/2024/9024204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 03/22/2024] [Accepted: 04/03/2024] [Indexed: 05/12/2024] Open
Abstract
The increasing prevalence of steatotic liver disease (SLD) in potential living donors is concerning, as it limits donor's availability amid rising demand. OPTIFAST very low-calorie diet (VLCD), a meal replacement product, effectively reduces weight and hepatic steatosis before transplantation. However, data on the outcomes of recipients of VLCD-treated donors are lacking. We conducted a single-center, retrospective study on 199 living donor liver transplant recipients at Toronto General Hospital, Canada, between January 2015 and January 2020. We compared the 1-year posttransplant outcomes between recipients who received organs from donors treated with VLCD (N = 34) for either weight loss or steatosis reduction, with those who did not require treatment (N = 165). Our analysis revealed no statistically significant differences in the rates of postoperative complications (23% vs 32.4%, p=0.3) or intensive care unit stays (70.9% vs 70.6%, p=1) between recipients of non-VLCD and VLCD grafts. Following adjusted multivariate logistic regression, receipt of VLCD grafts was not associated with increased hospital length of stay. In addition, one-year mortality did not differ between the two groups (4.2% non-VLCD recipients vs 2.9% VLCD recipients, p=0.6). OPTIFAST VLCD treatment for liver donors demonstrates positive and safe outcomes in recipients, expanding the pool of potential living donors for increased organ availability.
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Affiliation(s)
- Hannah Wozniak
- Interdepartmental Division of Critical Care Medicine, University of Toronto, Toronto, ON, Canada
- Multi-Organ Transplant Program, Toronto General Hospital, University Health Network, Toronto, ON, Canada
| | - Sara Naimimohasses
- Multi-Organ Transplant Program, Toronto General Hospital, University Health Network, Toronto, ON, Canada
| | - Toru Goto
- Multi-Organ Transplant Program, Toronto General Hospital, University Health Network, Toronto, ON, Canada
| | - Gonzalo Sapisochin
- Multi-Organ Transplant Program, Toronto General Hospital, University Health Network, Toronto, ON, Canada
| | - Blayne Sayed
- Multi-Organ Transplant Program, Toronto General Hospital, University Health Network, Toronto, ON, Canada
| | - Anand Ghanekar
- Multi-Organ Transplant Program, Toronto General Hospital, University Health Network, Toronto, ON, Canada
| | - Mark Cattral
- Multi-Organ Transplant Program, Toronto General Hospital, University Health Network, Toronto, ON, Canada
| | - Nazia Selzner
- Multi-Organ Transplant Program, Toronto General Hospital, University Health Network, Toronto, ON, Canada
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3
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Hogen R, Smith T, Jowers B, Kumar A, Buggs J, Chavarriaga A, Singhal A, Reino D, Subramanian V, Dhanireddy K. Size Matching Deceased Donor Livers: The Tampa General Measurement System. Transplant Proc 2024; 56:348-352. [PMID: 38368127 DOI: 10.1016/j.transproceed.2024.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Accepted: 01/16/2024] [Indexed: 02/19/2024]
Abstract
BACKGROUND No reliable or standardized system exists for measuring the size of deceased donor livers to determine whether they will fit appropriately into intended recipients. METHODS This retrospective, single-center study evaluated the efficacy of Tampa General Hospital's size-matching protocol for consecutive, deceased donor liver transplantations between October 2021 and November 2022. Our protocol uses cross-sectional imaging at the time of organ offer to compare the donor's right hepatic lobe size with the recipient's right hepatic fossa. Outcomes were analyzed, including large-for-size syndrome, small-for-size syndrome, early allograft dysfunction, primary nonfunction, graft survival, and patient survival. RESULTS We included 171 patients in the study. The donor liver physically fit in all the patients except one whose pretransplant imaging was outdated. One patient (0.6%) had large-for-size syndrome, none had small-for-size syndrome, 15 (10%) had early allograft dysfunction, and none had primary nonfunction. There were 11 (7%) patient deaths and 11 (7%) graft failures. CONCLUSION Our measurement system is fast and effective. It reliably predicts whether the donor liver will fit in the intended recipient and is associated with low rates of early allograft dysfunction.
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Affiliation(s)
- Rachel Hogen
- Tampa General Hospital Transplant Institute, Tampa, Florida.
| | | | | | - Ambuj Kumar
- Division of Evidence Based Medicine, University of South Florida, Tampa, Florida
| | - Jacentha Buggs
- Tampa General Hospital Transplant Institute, Tampa, Florida
| | | | - Ashish Singhal
- Tampa General Hospital Transplant Institute, Tampa, Florida
| | - Diego Reino
- Tampa General Hospital Transplant Institute, Tampa, Florida
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Kim SH, Kim KH, Cho HD. Donor safety of remnant liver volumes of less than 30% in living donor liver transplantation: A systematic review and meta-analysis. Clin Transplant 2023; 37:e15080. [PMID: 37529969 DOI: 10.1111/ctr.15080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 06/28/2023] [Accepted: 07/16/2023] [Indexed: 08/03/2023]
Abstract
PURPOSE This meta-analysis aimed to investigate the acceptability of donor remnant liver volume (RLV) to total liver volume (TLV) ratio (RLV/TLV) being <30% as safe in living donor liver transplantations (LDLTs). METHODS Online databases were searched from January 2000 to June 2022. Pooled odds ratios (ORs) and standardized mean differences (SMDs) with 95% confidence intervals (CIs) were calculated using fixed- or random-effects model. RESULTS One prospective and seven retrospective studies comprising 1935 patients (164 RLV/TLV <30% vs. 1771 RLV/TLV ≥30%) were included. Overall (OR = 1.82; 95% CI [1.24, 2.67]; p = .002) and minor (OR = 1.88; 95% CI [1.23, 2.88]; p = .004) morbidities were significantly lower in the RLV/TLV ≥30% group than in the RLV/TLV <30% group (OR = 1.82; 95% CI [1.24, 2.67]; p = .002). No significant differences were noted in the major morbidity, biliary complications, and hepatic dysfunction. Peak levels of bilirubin (SMD = .50; 95% CI [.07, .93]; p = .02) and international normalized ratio (SMD = .68; 95% CI [.04, 1.32]; p = .04) were significantly lower in the RLV/TLV ≥ 30% group than in the RLV/TLV <30% group. No significant differences were noted in the peak alanine transferase and aspartate transaminase levels and hospital stay. CONCLUSIONS Considering the safety of the donor as the top priority, the eligibility of a potential liver donor in LDLT whose RLV/TLV is expected to be <30% should not be accepted.
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Affiliation(s)
- Sang-Hoon Kim
- Division of Liver Transplantation and Hepatobiliary Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Ki-Hun Kim
- Division of Liver Transplantation and Hepatobiliary Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
| | - Hwui-Dong Cho
- Division of Liver Transplantation and Hepatobiliary Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, South Korea
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Buijk MS, Dijkshoorn M, Dwarkasing RS, Chorley AC, Minnee RC, Boehnert MU. Accuracy of preoperative liver volumetry in living donor liver transplantation—A systematic review and meta-analysis. JOURNAL OF LIVER TRANSPLANTATION 2023. [DOI: 10.1016/j.liver.2023.100150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/03/2023] Open
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6
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Kim KH, Kim SH, Cho HD. The short- and long-term outcomes in living-donor liver transplantation using small-for-size graft: A systematic review and meta-analysis. Transplant Rev (Orlando) 2023; 37:100747. [PMID: 36821946 DOI: 10.1016/j.trre.2023.100747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Revised: 01/08/2023] [Accepted: 01/10/2023] [Indexed: 02/05/2023]
Abstract
BACKGROUND A standard graft-to-recipient weight ratio (GRWR) ≥0.8% is widely accepted in living-donor liver transplantation (LDLT); however, the potential donor pool is expanded to patients adopting small-for-size graft (SFSGs) with GRWR <0.8%. This study aimed to investigate the effect of SFSG on short- and long-term outcomes following LDLT. METHODS Electronic databases were searched from January 1995 to January 2022 for studies comparing short- or long-term outcomes between patients with SFSG (GRWR <0.8%, SFSG group) and sufficient volume graft (GRWR ≥0.8%, non-SFSG group). The primary outcomes were one-, three-, and five-year overall survival (OS) and graft survival (GS), while the secondary outcome was postoperative complications. RESULTS Twenty-four studies comprising 7996 patients were included. In terms of OS, SFSG group had poor three-year OS (HR: 1.48, 95% CI [1.01, 2.15], p = 0.04), but there were no significant differences between two groups in one-year OS (HR: 1.50, 95% CI [0.98, 2.29], p = 0.06) and five-year OS (HR: 1.40, 95% CI [0.95, 2.08], p = 0.02). In GS, there were no significant differences in one-year (HR 1.31, 95% CI [1.00, 1.72], p = 0.05), three-year (HR 1.33, 95% CI [0.97, 1.82], p = 0.07), and five-year GS (HR 1.17, 95% CI [0.95, 1.44], p = 0.13). The SFSG group had comparable postoperative complications, except for a high incidence of vascular complications and small-for-size syndromes. CONCLUSIONS Expanding the potential donor pool in LDLT to SFSG with GRWR <0.8% can be acceptable in terms of comparable long-term OS and GS, despite the risk for vascular complications and small-for-size syndrome.
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Affiliation(s)
- Ki-Hun Kim
- Division of Liver Transplantation and Hepatobiliary Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - Sang-Hoon Kim
- Division of Liver Transplantation and Hepatobiliary Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Hwui-Dong Cho
- Division of Liver Transplantation and Hepatobiliary Surgery, Department of Surgery, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
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7
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Patel MS, Egawa H, Kwon YK, Chok KSH, Spiro M, Raptis DA, Vij V, Chaudhary A, Genyk Y. The role of graft to recipient weight ratio on enhanced recovery of the recipient after living donor liver transplantation - A systematic review of the literature and expert panel recommendations. Clin Transplant 2022; 36:e14630. [PMID: 35258108 DOI: 10.1111/ctr.14630] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2022] [Revised: 01/01/2022] [Accepted: 02/28/2022] [Indexed: 02/04/2023]
Abstract
BACKGROUND There continues to be debate about the lower limit of graft-to-recipient weight ratio (GRWR) for living donor liver transplant (LDLT). OBJECTIVES To identify the lower limit of GRWR compatible with enhanced recovery after living donor liver transplant and to provide international expert panel recommendations. DATA SOURCES Ovid MEDLINE, Embase, Scopus, Google Scholar, and Cochrane Central. METHODS Systematic review following PRISMA guidelines and recommendations using the GRADE approach derived from an international expert panel. Studies assessing how GRWR affects recipient outcomes such as small for size syndrome, other complications, patient and graft survival, and length of stay were included. PROTOCOL REGISTRATION CRD42021260794. RESULTS Twenty articles were included in the qualitative synthesis, and all were retrospective observational studies. There was heterogeneity in the definition of study cohorts and key outcome measures such as small-for-size syndrome. Most studies lacked risk adjustment given limited single-center sample size. GRWR of ≥ .8% is associated with enhanced recovery. Recipients of grafts with GRWR < .8%, however, were found to have similar outcomes as those with ≥ .8% when appropriate consideration is made for portal flow modulation and recipient illness severity. CONCLUSIONS GRWR ≥ .8% is often compatible with enhanced recovery, but grafts < .8% can be used in selected LDLT recipients with optimal donor-recipient selection, surgical technique, and perioperative management (Quality of Evidence; Low | Grade of Recommendation; Strong).
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Affiliation(s)
- Madhukar S Patel
- Division of Surgical Transplantation, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Hiroto Egawa
- Department of Surgery, Tokyo Women's Medical University, Shinjuku-ku, Tokyo, Japan
| | - Yong Kyong Kwon
- Department of Surgery, Keck Medical Center of University of Southern California, Los Angles, California, USA
| | - Kenneth Siu Ho Chok
- Department of Surgery and State Key Laboratory for Liver Research, The University of Hong Kong, Hong Kong, China
| | - Michael Spiro
- Department of Anesthesia and Intensive Care Medicine, Royal Free Hospital, London, UK.,Division of Surgery & Interventional Science, University College London, London, UK
| | - Dimitri Aristotle Raptis
- Division of Surgery & Interventional Science, University College London, London, UK.,Clinical Service of HPB Surgery and Liver Transplantation, Royal Free Hospital, London, UK
| | - Vivek Vij
- Liver Transplant and Hepatobiliary Surgery, Fortis Hospital, Noida, UP, India
| | - Abhideep Chaudhary
- Department of HPB Surgery & Liver Transplant, BL Kapur Superspeciality Hospital, Delhi, India
| | - Yuri Genyk
- Department of Surgery, Keck Medical Center of University of Southern California, Los Angles, California, USA
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8
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Sakai T, Ko JS, Crouch CE, Kumar S, Little MB, Chae MS, Ganoza A, Gómez-Salinas L, Humar A, Kim SH, Koo BN, Rodriguez G, Sirianni J, Smith NK, Song JG, Ullah A, Hendrickse A. Perioperative management of adult living donor liver transplantation: Part 1 - recipients. Clin Transplant 2022; 36:e14667. [PMID: 35435293 DOI: 10.1111/ctr.14667] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 03/06/2022] [Accepted: 03/31/2022] [Indexed: 11/29/2022]
Abstract
Living donor liver transplantation was first developed to mitigate the limited access to deceased donor organs in Asia in the 1990s. This alternative liver transplantation option has become an established and widely practiced transplantation method for adult patients suffering from end-stage liver disease. It has successfully addressed the shortage of deceased donors. The Society for the Advancement of Transplant Anesthesia and the Korean Society of Transplant Anesthesia jointly reviewed published studies on the perioperative management of live donor liver transplant recipients. The review aims to offer transplant anesthesiologists and critical care physicians a comprehensive overview of the perioperative management of adult live liver transplantation recipients. We feature the status, outcomes, surgical procedure, portal venous decompression, anesthetic management, prevention of acute kidney injury, avoidance of blood transfusion, monitoring and therapeutic strategies of hemodynamic derangements, and Enhanced Recovery After Surgery protocols for liver transplant recipients. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Tetsuro Sakai
- Department of Anesthesiology and Perioperative Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, USA.,Clinical and Translational Science Institute, University of Pittsburgh, PA, USA.,McGowan Institute for Regenerative Medicine, University of Pittsburgh, PA, USA
| | - Justin Sangwook Ko
- Department of Anesthesiology & Pain Medicine, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Republic of Korea
| | - Cara E Crouch
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Sathish Kumar
- Department of Anesthesiology, University of Michigan, Ann Arbor, MI, USA
| | - Michael B Little
- Department of Anesthesiology, UT Health San Antonio, San Antonio, TX, USA
| | - Min Suk Chae
- Department of Anesthesiology and Pain Medicine, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Republic of Korea
| | - Armando Ganoza
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Luis Gómez-Salinas
- Department of Anesthesiology and Pain Medicine, Hospital General Universitario de Alicante, Alicante, Spain
| | - Abhi Humar
- Department of Surgery, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Sang Hyun Kim
- Department of Anesthesiology and Pain Medicine, Soonchunhyang University Bucheon Hospital, Gyeonggi-do, Republic of Korea
| | - Bon-Nyeo Koo
- Department of Anesthesiology and Pain Medicine, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Gonzalo Rodriguez
- Department of Surgery, Hospital General Universitario de Alicante, Alicante, Spain
| | - Joel Sirianni
- Department of Anesthesia & Perioperative Medicine, Medical University of South Carolina, Charleston, SC, USA
| | - Natalie K Smith
- Department of Anesthesiology, Perioperative & Pain Medicine, Icahn School of Medicine at Mount Sinai, New York City, NY, USA
| | - Jun-Gol Song
- Department of Anesthesiology and Pain Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Aisha Ullah
- Department of Anesthesiology and Perioperative Medicine, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Adrian Hendrickse
- Department of Anesthesiology, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
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Abstract
Liver transplantation has become established as a standard procedure in the treatment of end-stage liver diseases. Despite intense efforts by all parties involved up to the amendment of the German Transplantation Act, the lack of suitable donor organs was still one of the limiting factors of this therapeutic procedure. One way out of this problem is to make so-called marginal organs usable, e.g. with the help of machine perfusion or by utilizing living liver donation, which are used in some countries for more than 90% of organ donations. In general, there is no difference in the indications for liver transplantation between a (partial) organ obtained by post-mortem or living donation. Before any living donation, a thorough evaluation of the donor is carried out in order to minimize postoperative morbidity as far as possible. Technically the partial liver donation is based on the oncological liver resection, while the partial liver transplantation is a further development of split liver transplantation after post-mortem liver donation. In specialized centers comparable or even better results can nowadays be achieved using living liver donation instead of post-mortem donation.
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Affiliation(s)
- H-M Tautenhahn
- Klinik für Allgemein‑, Viszeral- und Gefäßchirurgie, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Deutschland.
- Research Programme "Else Kröner-Forschungskolleg AntiAge", Universitätsklinikum Jena, Jena, Deutschland.
| | - F Rauchfuß
- Klinik für Allgemein‑, Viszeral- und Gefäßchirurgie, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Deutschland
| | - A Ali Deeb
- Klinik für Allgemein‑, Viszeral- und Gefäßchirurgie, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Deutschland
| | - A Bauschke
- Klinik für Allgemein‑, Viszeral- und Gefäßchirurgie, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Deutschland
| | - U Settmacher
- Klinik für Allgemein‑, Viszeral- und Gefäßchirurgie, Universitätsklinikum Jena, Am Klinikum 1, 07747, Jena, Deutschland
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