Publications by authors named "Miguel Gomez-Bravo"

Uncontrolled bleeding during surgery is associated with high mortality and prolonged hospital stay, necessitating the use of hemostatic agents. Fibrin sealant patches offer an efficient solution to achieve hemostasis and improve patient outcomes in liver resection surgery. We have previously demonstrated the efficacy of a nanostructured fibrin-agarose hydrogel (NFAH).

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Sex inequities in liver transplantation (LT) have been documented in several, mostly US-based, studies. Our aim was to describe sex-related differences in access to LT in a system with short waiting times. All adult patients registered in the RETH-Spanish Liver Transplant Registry (2000-2022) for LT were included.

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Article Synopsis
  • * Conducted between June 2019 and August 2020, the retrospective analysis involved 40 hospitals, with insights derived from over 2,200 liver surgeries, including 1350 for colorectal metastases, of which 150 utilized the liver-first strategy.
  • * Findings revealed no significant differences in surgical outcomes between hospitals performing fewer than 50 versus those performing 50 or more liver surgeries per year, prompting further research into optimal candidate selection for this treatment approach.
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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).

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Article Synopsis
  • The study focuses on the recurrence of isolated pancreatic metastases from Renal Cell Carcinoma (RCC) and evaluates the outcomes of repeat pancreatic resections after initial surgery.
  • It involved a retrospective analysis of 131 resections in 116 patients from January 2010 to May 2020, comparing those who had single versus iterative pancreatic surgeries.
  • Results indicated that while disease-free survival (DFS) rates were slightly better in the iterative group, overall survival (OS) rates were similar for both groups, suggesting that repeat surgery is a viable option for managing RCC-related pancreatic metastases.
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Recommended post-liver transplant (LT) prophylaxis in patients with hepatitis delta includes a nucleos(t)ide analogue (NA) and anti-hepatitis B immunoglobulin (HBIG) indefinitely. We analysed the use of HBIG in real-life clinical practice and its impact on HBV/HDV recurrence in 174 HDV-related LT patients from 10 Spanish liver transplant centres (1988-2018). Median post-LT follow-up was 7.

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Article Synopsis
  • Surgical hemostasis is crucial in surgery, but the lack of a standardized bleeding classification makes it difficult to choose the best hemostatic agent for individual cases.
  • This study aims to evaluate the VIBe (Validated Intraoperative Bleeding) scale in a clinical setting, particularly focusing on liver surgeries and its relationship with bleeding severity and postoperative complications.
  • Conducted across 10 Spanish centers, this prospective study involves 259 liver resection patients and seeks to validate the VIBe scale for potential integration into everyday surgical practice.
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Background: The complex process of liver graft assessment is one point for improvement in liver transplantation. The main objective of this study is to develop a tool that supports the surgeon who is responsible for liver donation in the decision-making process whether to accept a graft or not using the initial variables available to it.

Material And Method: Liver graft samples candidate for liver transplantation after donor brain death were studied.

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Data comparing long-term effectiveness and safety of once-daily tacrolimus formulations in de novo liver transplantation are scarce. We compared the effectiveness, pharmacokinetic profile, and safety of LCPT (Envarsus) and PR-Tac (Advagraf) for up to 12 months post-transplant. Adult de novo liver transplant recipients who started IR-Tac (Prograf) and were converted to LCPT or PR-Tac 3-5 days post-transplant were included.

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Background & Aims: Complex portal vein thrombosis (PVT) is a challenge in liver transplantation (LT). Extra-anatomical approaches to portal revascularization, including renoportal (RPA), left gastric vein (LGA), pericholedochal vein (PCA), and cavoportal (CPA) anastomoses, have been described in case reports and series. The RP4LT Collaborative was created to record cases of alternative portal revascularization performed for complex PVT.

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(1) Background: Graft-cell-free DNA (cfDNA) in the circulation of liver transplant recipients has been proposed as a noninvasive biomarker of organ rejection. The aim of this study was to detect donor-specific cfDNA (ds-cfDNA) in the recipient's serum after either liver damage or rejection using a qPCR-based method. (2) Methods: We proposed a qPCR method based on the amplification of 10 specific insertion-deletion (InDel) polymorphisms to detect donor-specific circulating DNA diluted in the recipient cfDNA.

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Background: Extended criteria donor livers are increasingly being accepted for transplant in an attempt to bridge the gap between the number of patients on the waiting list and the number of available donor livers. Our objective was to describe our first case of hepatic resuscitation by means of an ex situ perfusion machine in hypothermia with oxygen insufflation of a liver graft extracted from a donor in type 3 asystole after regional perfusion in normothermia.

Methods: A 53-year-old woman with disabling polycystic liver disease was included on the liver transplant waiting list.

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Very few surveys have been carried out of oncosurgical decisions made in patients with pancreatic cancer (PC), or of the possible differences in therapeutic approaches between low/medium and high-volume centers. A survey was sent out to centers affiliated to the Spanish Group of Pancreatic Surgery (GECP) asking about their usual pre-, intra- and post-operative management of PC patients and describing five imaginary cases of PC corresponding to common scenarios that surgeons regularly assess in oncosurgical meetings. A consensus was considered to have been reached when 80% of the answers coincided.

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Background: Early extubation is a fundamental element integrated into enhanced recovery protocols in orthotopic liver transplantation (OLT). The aim is to evaluate whether early extubation influences short- and medium-term postoperative morbidity and mortality.

Methods: A cohort of 209 patients who underwent OLT in a tertiary hospital in a period from January 2016 to December 2018 were retrospectively analyzed.

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Introduction: To date, no pancreatic stump closure technique has been shown to be superior to any other in distal pancreatectomy. Although several studies have shown a trend towards better results in transection using a radiofrequency device (radiofrequency-assisted transection (RFT)), no randomised trial for this purpose has been performed to date. Therefore, we designed a randomised clinical trial, with the hypothesis that this technique used in distal pancreatectomies is superior in reducing clinically relevant postoperative pancreatic fistula (CR-POPF) than mechanical closures.

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Background: An organ shortage is the reason why it is necessary to expand the pool of donors, which can be achieved by using elderly donors. The main goal of this study is to analyze the outcomes of liver transplant (LT) when it is performed with donors older than 75 years.

Methods: We carried out a retrospective case-control study (N = 212) that included LTs with donors older than 75 years (group A, n = 106 cases) that were performed in our center between the years 2010 and 2020.

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Background: Sorafenib constitutes a suitable treatment alternative for patients with advanced hepatocellular carcinoma (HCC) in whom atezolizumab + bevacizumab therapy is contraindicated. The aim of the study was the identification of a miRNA signature in liquid biopsy related to sorafenib response.

Methods: miRNAs were profiled in hepatoblastoma HepG2 cells and tested in animal models, extracellular vesicles (EVs), and plasma from HCC patients.

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Article Synopsis
  • The study evaluated the effectiveness of a standardized clinician-reported bleeding severity scale specifically for liver surgery, aiming to determine its reproducibility and clinical value.
  • Conducted with 47 surgeons across 10 hospitals in Spain, the research found high agreement scores for both intraobserver (0.985) and interobserver (0.929) reliability, indicating the consistency of the scale's use regardless of the surgeon's experience level or the number of surgeries performed.
  • The findings support the utility of this bleeding severity scale as a valuable tool for assessing intraoperative bleeding in liver surgery, emphasizing its practicality in diverse clinical settings.
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BACKGROUND Self-administered subcutaneous hepatitis B immunoglobulin (s.c. HBIg) in combination with nucleos(t)ide analogs (NUCs) has proved to be effective and safe in preventing hepatitis B virus (HBV) reinfection after liver transplantation.

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Background And Aim: reduction in calcineurin inhibitor levels is considered crucial to decrease the incidence of kidney dysfunction in liver transplant (LT) recipients. The aim of this study was to evaluate the safety and impact of everolimus plus reduced tacrolimus (EVR + rTAC) vs. mycophenolate mofetil plus tacrolimus (MMF + TAC) on kidney function in LT recipients from Spain.

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Background: Effective biomarkers are needed to enable personalized medicine for pancreatic cancer patients. This study analyzes the prognostic value, in early pancreatic cancer, of single circulating tumor cell (CTC) and CTC clusters from the central venous catheter (CVC) and portal blood (PV).

Methods: In total, 7 mL of PV and CVC blood from 35 patients with early pancreatic cancer were analyzed.

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Postmortem normothermic regional perfusion (NRP) is a rising preservation strategy in controlled donation after circulatory determination of death (cDCD). Herein, we present results for cDCD liver transplants performed in Spain 2012-2019, with outcomes evaluated through December 31, 2020. Results were analyzed retrospectively and according to recovery technique (abdominal NRP [A-NRP] or standard rapid recovery [SRR]).

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