Publications by authors named "Wojciech Polak"

The prevention of hepatic artery thrombosis (HAT) is pivotal for graft survival immediately after liver transplantation (LT). This study aimed to identify risk factors (RF) for early HAT (eHAT) and assess the benefit of antiplatelet prophylaxis (AP). This retrospective single-center study included 836 adult patients who underwent LT between 2007 and 2022.

View Article and Find Full Text PDF

Liver transplantation (LT) is one of the most effective treatments for hepatocellular carcinoma (HCC) in cirrhotic livers. Neoadjuvant bridging treatment in patients qualifying and listed for LT is advised but is still debatable owing to the low level of evidence. The aim of this study was to perform a systematic review to assess the prognostic value of bridging therapy, in terms of radiological and histopathological examination outcomes, for survival after LT.

View Article and Find Full Text PDF

Liver transplantation is associated with a high risk of postoperative complications due to the complexity of the surgical procedure, recipient disease severity and wide range of graft quality which remains somewhat unpredictable. However, survival rates after transplantation continue to improve and the focus has thus turned to other clinically relevant endpoints including posttransplant complications, patient quality of life and costs. Procedures like liver transplantation offer the entire spectrum of postsurgical events, even in donor-recipient constellations deemed of low risk within recently defined benchmark criteria.

View Article and Find Full Text PDF

Access to solid organ transplantation in patients with intellectual disability is associated with health inequities due to concerns about treatment adherence, survival rates, and post-transplant quality of life. This systematic literature review aims to compare outcomes after organ transplantation in patients with intellectual disability compared to patients without intellectual disability. Embase, Medline Ovid, PsycINFO, Web of Science, Cochrane Central Register of Trials, and Google Scholar databases were systematically searched for studies concerning pediatric or adult solid organ transplantation in recipients with a diagnosis of intellectual disability prior to transplantation.

View Article and Find Full Text PDF
Article Synopsis
  • The study aims to develop a Preoperative Recurrence Score (PRS) to predict the risk of early recurrence in patients with perihilar cholangiocarcinoma (PCC) after surgery based on their preoperative imaging.
  • Researchers collected data from 215 patients and found significant tumor characteristics (like size and vascular involvement) correlated with recurrence-free survival, successfully validating the PRS model across multiple patient cohorts.
  • High PRS scores indicated a higher likelihood of recurrence, suggesting that surgery might not be beneficial for those patients, highlighting the need for careful consideration before proceeding to surgery.
View Article and Find Full Text PDF
Article Synopsis
  • In the Netherlands, organ donation after euthanasia (DCD-V) has increased since 2012, but the outcomes of kidney transplants from DCD-V donors haven't been fully explored.
  • A study aimed to compare the outcomes of DCD-V kidney transplants with those from DCD-III and brain-dead (DBD) donors, analyzing data from 2012 to 2023.
  • Results showed that DCD-V kidney transplants had a significantly lower incidence of delayed graft function compared to DCD-III, suggesting DCD-V may be a viable option to expand the kidney donor pool.
View Article and Find Full Text PDF

The comparison of outcomes in liver transplantation (LT) is hampered by using clinically nonrelevant surrogate endpoints and considerable variability in reported relevant posttransplant outcomes. Such variability stems from nonstandard outcome measures across studies, variable definitions of the same complication, and different timing of reporting. The Clavien-Dindo classification was established to improve the rigor of outcome reporting but is nonspecific to an intervention, and there are unsolved dilemmas specifically related to LT.

View Article and Find Full Text PDF

Purpose: In an effort to reduce waitlist mortality, extended criteria donor organs, including those from donation after circulatory death (DCD), are being used with increasing frequency. These donors carry an increased risk for postoperative complications, and balancing donor-recipient risks is currently based on generalized nomograms. Abdominal normothermic regional perfusion (aNRP) enables individual evaluation of DCD organs, but a gold standard to determine suitability for transplantation is lacking.

View Article and Find Full Text PDF

Lymph node (LN) involvement is a poor prognostic factor for patients with intrahepatic cholangiocarcinoma (iCCA). The aim of this study was to evaluate the yield and impact on clinical decision making of endoscopic ultrasound with tissue acquisition (EUS-TA) of LNs in patients with potentially resectable iCCA. In this multicenter cohort study, patients with potentially resectable iCCA and preoperative EUS between 2010 and 2020 were retrospectively included.

View Article and Find Full Text PDF

Background And Aims: Biopsy-proven severe graft steatosis is associated with adverse outcomes after liver transplantation. The concomitant presence of metabolic risk factors might further increase this risk. We studied the association between graft steatosis and metabolic risk factors in the donor, with recipient outcomes after liver transplantation.

View Article and Find Full Text PDF

Background & Aims: Tacrolimus has been associated with recurrence of primary biliary cholangitis (PBC) after liver transplantation (LT), which in turn may reduce survival. This study aimed to assess the association between the type of calcineurin inhibitor used and long-term outcomes following LT in patients with PBC.

Methods: Survival analyses were used to assess the association between immunosuppressive drugs and graft or patient survival among adult patients with PBC in the European Liver Transplant Registry.

View Article and Find Full Text PDF

Biliary complications are common after liver transplantation (LT). Endoscopic retrograde cholangiopancreatography (ERCP) is the preferred method to treat biliary complications. Nevertheless, ERCP is not without complications and may have a greater complication rate in the LT population.

View Article and Find Full Text PDF
Article Synopsis
  • Training in HPB surgery is inconsistent across regions under the E-AHPBA, leading to discussions about the future of accreditation for centers and fellowship programs.
  • A mixed-methods study was conducted to gather responses from stakeholders, focusing on identifying strengths, weaknesses, opportunities, and threats (SWOT) related to the accreditation process.
  • The findings highlight both positive and negative aspects affecting HPB accreditation and suggest that while formal accreditation isn't currently feasible, there's strong interest in developing a structured system for HPB training that should influence future strategic planning.
View Article and Find Full Text PDF

Background: Despite the WHO's report of 24 available SARS-CoV-2 vaccines, limited data exist regarding vaccination policies for liver transplant (LT) patients. To address this, we conducted a global multi-society survey (EASL-ESOT-ELITA-ILTS) in LT centers.

Methods: A digital questionnaire assessing vaccine policies, safety, efficacy, and center data was administered online to LT centers.

View Article and Find Full Text PDF
Article Synopsis
  • A new study evaluated long-term outcomes of liver transplants from donors treated with hypothermic oxygenated machine perfusion (HOPE) across 22 European centers, involving 1,202 transplant cases from 2012 to 2021.
  • The study showed high 1-, 3-, and 5-year death-censored graft survival rates for both donation after brain death (DBD) and donation after circulatory death (DCD), with low rates of primary non-function (PNF) and ischaemic cholangiopathy (IC).
  • The findings indicate that HOPE treatment effectively improves liver transplant outcomes, regardless of the donor's risk profile, and supports its incorporation into routine clinical practice.
View Article and Find Full Text PDF
Article Synopsis
  • The study aimed to establish a common language regarding extreme liver surgery to facilitate better comparison of surgical outcomes across different centers.
  • A Delphi methodology was used, gathering opinions from 38 expert surgeons, who largely agreed on key definitions related to total vascular occlusion and surgical approaches, achieving consensus on various topics.
  • Ultimately, 75% agreed on a definition for extreme liver surgery, highlighting the importance of a unified approach in managing patients with complex liver diseases.
View Article and Find Full Text PDF

Background: Living donor liver transplantation (LDLT) is the best option for end-stage liver disease patients. Older potential donors are increasingly requesting donation. This study aims to systematically assess the differences in donor perioperative and postoperative complications, mortality, and quality of life (QoL) between younger and older living liver donors.

View Article and Find Full Text PDF

In living-donor liver transplantation, biliary complications including bile leaks and biliary anastomotic strictures remain significant challenges, with incidences varying across different centers. This multicentric retrospective study (2016-2020) included 3633 adult patients from 18 centers and aimed to identify risk factors for these biliary complications and their impact on patient survival. Incidences of bile leaks and biliary strictures were 11.

View Article and Find Full Text PDF

Background And Aims: Management of Budd-Chiari syndrome (BCS) has improved over the last decades. The main aim was to evaluate the contemporary post-liver transplant (post-LT) outcomes in Europe.

Approach And Results: Data from all patients who underwent transplantation from 1976 to 2020 was obtained from the European Liver Transplant Registry (ELTR).

View Article and Find Full Text PDF
Article Synopsis
  • - Liver transplantation is a complex and costly life-saving treatment for advanced liver disease, necessitating collaborative efforts and investment from healthcare systems and professionals.
  • - Current metrics for monitoring liver transplantation processes and outcomes often fail to prioritize what is important to patients, lacking a patient-centered approach.
  • - A Consensus Statement created by experts aims to establish new outcome measures for liver transplantation based on Value-Based Health Care (VBHC) principles, providing a framework to enhance the relevance of these metrics for patients.
View Article and Find Full Text PDF

Introduction: AFP and the RETREAT score are currently used to predict HCC recurrence after LT. However, superior discriminating models are needed for low AFP populations. The aim of this study is to investigate the predictive value of PIVKA-II on recurrence-free survival after LT in a low AFP population and microvascular invasion on explant.

View Article and Find Full Text PDF

Early detection of liver transplantation (LT) vascular complications enables timely management. Our aim was to assess if routine Doppler ultrasound (rDUS) improves the detection of hepatic artery thrombosis (HAT), portal vein thrombosis (PVT) and hepatic venous outflow obstruction (HVOO). We retrospectively analysed timing and outcomes, number needed to diagnose one complication (NND) and positive predictive value (PPV) of rDUS on post-operative day (POD) 0,1 and 7 in 708 adult patients who underwent primary LT between 2010-2022.

View Article and Find Full Text PDF

Graft survival is a critical end point in adult-to-adult living donor liver transplantation (ALDLT), where graft procurement endangers the lives of healthy individuals. Therefore, ALDLT must be responsibly performed in the perspective of a positive harm-to-benefit ratio. This study aimed to develop a risk prediction model for early (3 months) graft failure (EGF) following ALDLT.

View Article and Find Full Text PDF

Background: Small adult patients with end-stage liver disease waitlisted for liver transplantation may face a shortage of size-matched liver grafts. This may result in longer waiting times, increased waitlist removal, and waitlist mortality. This study aims to assess access to transplantation in transplant candidates with below-average bodyweight throughout the Eurotransplant region.

View Article and Find Full Text PDF