Publications by authors named "Rafael S Pinheiro"

Background: Simultaneous liver-kidney transplantation is indicated for patients with concomitant end-stage liver disease and end-stage renal disease. The traditional technique involves separate implantations of the liver and the kidney. In the en bloc approach, the liver is recovered en bloc with the right kidney and the donor renal artery is anastomosed to the donor splenic artery.

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Background: Liver adenomatosis is characterized by multiple adenomas diffusely distributed throughout the liver parenchyma. Studies addressing liver transplantation for those cases are scarce, and the criteria used to indicate transplantation are still debatable.

Objective: To report a single-center experience of liver transplantation for diffuse adenomatosis.

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Background: Hepatic artery thrombosis is the most common vascular complication of liver transplantation. When occurring late in the postoperative course, it may have no clinical repercussions, and conservative treatment may be implemented. Some patients, however, will develop severe biliary complications due to ischemic cholangiopathy and require retransplantation.

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Introduction: Polycystic liver disease and giant hepatic hemangioma may present with severe symptom burden and indicate orthotopic liver transplantation. The left-to-right piggyback approach is a useful technique for performing total hepatectomy of enlarged livers.

Objective: The purpose of this study is to analyze the results of liver transplantation in patients with benign massive hepatomegaly.

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Background: Hepatic artery pseudoaneurysm after liver transplantation is a rare condition that can lead to spontaneous bleeding, depending on its extent and location. Treatment involves endovascular and surgical approaches in addition to liver retransplantation in cases of graft failure.

Case Report: A 42-year-old female underwent deceased donor liver transplantation due to cryptogenic cirrhosis and schistosomiasis with an uneventful postoperative course.

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Summary: People with cirrhosis of the liver are at risk for complications that can worsen their quality of life and increase morbidity and mortality. Contrary to previous beliefs, cirrhosis does not protect against the development of thromboembolic events, and cirrhotic patients may have higher rates of deep vein thrombosis (DVT).

Background And Aims: The study of chronic venous disease and its impact on patients with cirrhosis is unknown in the literature and may be an important fact since this condition also had impact on quality of life and morbidity.

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Unlabelled: The World Health Organization (WHO) estimates that by 2025 about 2.3 billion adults will be overweight, with more than 700 million obese. Obese patients with joint pain and reduced physical function represent a challenging group to treat effectively.

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Background: Isolated intestinal transplantation (IT) is indicated in cases of intestinal failure (IF) in the absence of severe liver dysfunction. Short bowel syndrome (SBS) is the most frequent IF etiology, and due to the absence or considerable reduction of intestinal loops in the abdominal cavity in these patients, there is atrophy and muscle retraction of the abdominal wall, leading to loss of the abdominal domain and elasticity and preventing the primary closure of the abdominal wall. This study aimed to describe a technique for the closure of the abdominal wall after IT without using prostheses.

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Introduction: Patients with liver cirrhosis are at a higher risk of hospitalization. The present review aimed to assess the risk of thromboembolism and its burden on hospitalized cirrhotic patients.

Materials And Methods: A systematic review (PROSPERO: CRD42021256869) was conducted in PubMed, Embase, Cochrane, Lilacs, and a manual search of references.

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BACKGROUND Adequate donor and recipient matching in liver transplantation is crucial to improve patient survival. Our objective was to propose and validate a new model for predicting outcomes using donor and recipient scoring criteria. MATERIAL AND METHODS We retrospectively analyzed data of all patients (n=932) who underwent liver transplantation (n=1106) from January 2006 to December 2018.

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Background: The Coronavirus 19 (COVID-19) pandemic has dramatically impacted liver organ transplantation. The American Society of Transplantation recommends a minimum of 28 days after symptom resolution for organ donation. However, the exact time for transplantation for recipients is unknown.

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Background: COVID-19 has spread worldwide and has become a public health emergency and a pandemic of international concern. The solid organ donation system was no different. This study aimed to investigate the effect of COVID-19 on the liver transplant (LT) system in Brazilian territory.

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Background: Liver transplant (LT) is the standard therapy for end-stage liver disease. Advances in surgical techniques and immunosuppression protocols improved the results of LT by increasing long-term survival. Nevertheless, an adequate match between the donor and recipient is paramount for avoiding futile liver transplants.

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Background: Liver transplantation in an animal model is challenging due to hemodynamics and intraoperative anesthetic care. Several models are described in the literature employing different techniques such as venovenous bypass or aortic cross-clamping to maintain hemodynamic stability, although few groups keep the animal alive in the postoperative period. This study aims to evaluate a liver transplantation clinical model in pigs without venovenous bypass or aortic cross-clamping.

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Background: Identifying anatomic variations of the hepatic artery is essential in liver transplantation. The artery supply is crucial for the procedure's success, and, in some cases of anatomic variations, they need reconstruction. Hepatic artery thrombosis is a severe vascular complication.

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Background: The small-for-size syndrome (SFSS) is characterized by prolonged hyperbilirubinemia, coagulopathy, and/or encephalopathy caused by a small liver graft that cannot sustain the metabolic demands of the recipient after a partial liver transplant (PLT). Models of PLT in pigs are excellent for studying this syndrome. This review aimed to identify the different porcine models of SFSS in the literature and compare their technical aspects and therapeutics methods focused on portal inflow modulation (PIM).

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Background: The number of elderly patients who have end-stage liver disease and require liver transplantation has dramatically increased. On the other hand, liver grafts from elderly donors have been offered more frequently for transplantation. The present study aims to analyze the results of liver transplants performed with donors and recipients aged ≥70 years.

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Background: Terlipressin is widely used for treatment of hepatorenal syndrome and variceal bleeding in cirrhotic patients. However, it may be associated with side effects, especially those related to vasoconstriction, such as myocardial infarction or intestinal ischemia. This is a case report of a cirrhotic patient with nonvariceal upper gastrointestinal bleeding after duodenal necrosis due to the use of terlipressin, a novel side effect not yet described in literature to the best of our knowledge.

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Background: The classic piggyback technique uses the union of the 3 hepatic veins to perform the cavo-caval anastomosis. However, due to the lateral localization of the right hepatic vein, the partial clamping of the vena cava in this technique significantly reduces the venous return to the right atrium. To avoid this, we adopted in 2015 a modified piggyback technique, in which we use the common trunk of the middle and left hepatic veins and also perform a lateral incision toward the right in the anterior wall of the vena cava in order to widen the final ostium of the cavo-caval anastomosis.

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Introduction: Donor hepatic artery thrombosis (dHAT) identified during liver procurement and backtable is a rare and little-reported event that can make liver transplants unfeasible.

Methods: This is a retrospective study of dHAT identified during liver grafts procurements or backtable procedures. All grafts were recovered from brain-dead donors.

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Background: Living donor liver transplant (LDLT) is a valuable therapeutic option for overcoming the deceased donor shortage. Modified right lobe graft (MRLG) keeps the middle hepatic vein (MHV) trunk with the remnant liver to improve donor safety. Hemostasis in the MHV tributary reconstruction can be tricky; surgical stitches and energy coagulation are ineffective.

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Background: Setting up new liver transplant (LT) centers is essential for countries with organ shortages. However, good outcomes require experience, because LT learning depends on a high number of surgeries. This study aims to describe how a new center was set up from a partnership between the new center and an experienced one.

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Background: Pancreas transplantation remains a challenging procedure for small and medium-sized transplants teams, despite improvements in graft survival. Data regarding the impact of the procurement team's experience on the outcomes of pancreas transplant are lacking. The objective of this study was to evaluate risk factors that lead to pancreatic allograft thrombosis, especially the experience of the pancreas procurement team.

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Short bowel syndrome is the most common etiology of intestinal failure, resulting from either resections of different intestinal segments or a congenital condition. Due to the absence or considerable reduction of intestinal loops in the abdominal cavity, patients with short bowel syndrome present with atrophy and muscle retraction of the abdominal wall, which leads to loss of abdominal domain and elasticity. This complication is an aggravating factor of intestinal transplantation since it can prevent the primary closure of the abdominal wall.

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Background: The incidence of abdominal hernia in cirrhotic patients is as higher as 20%; in cases of major ascites the incidence may increase up to 40%. One of the main and most serious complications in cirrhotic postoperative period (PO) is acute kidney injury (AKI).

Aim: To analyze the renal function of cirrhotic patients undergoing to hernia surgery and evaluate the factors related to AKI.

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