RUBENS MACEDO ARANTES JUNIOR

(Fonte: Lattes)
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Lattes
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Instituto Central, Hospital das Clínicas, Faculdade de Medicina - Médico
LIM/37 - Laboratório de Transplante e Cirurgia de Fígado, Hospital das Clínicas, Faculdade de Medicina

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  • article 0 Citação(ões) na Scopus
    Innovative Technique Avoiding Bleeding After Reperfusion in Living Donor Liver Transplant Using a Modified Right Lobe Graft
    (2022) PINHEIRO, Rafael S.; ANDRAUS, Wellington; FORTUNATO, Allana C.; FERNANDES, Michel Ribeiro; NACIF, Lucas Souto; MARTINO, Rodrigo Bronze De; DUCATTI, Liliana; WAISBERG, Daniel Reis; ARANTES, Rubens Macedo; ROCHA-SANTOS, Vinicius; GALVAO, Flavio Henrique Ferreira; CARNEIRO-D'ALBUQUERQUE, Luiz Augusto
    Background. Living donor liver transplant (LDLT) is a valuable therapeutic option for over-coming 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. Fibrin glues are excellent vascular sealants but are poor in maintaining hemostasis in an active hemorrhage or preventing resection surface-related complications after liver resection. We propose applying fibrin sealant during back table graft preparation to seal the hepatic edge and MHV reconstruction to avoid bleeding after graft revascularization. Methods. Our retrospective cohort study included all adult patients undergoing LDLT between August 2017 and December 2021. During the back table procedure, we performed the reconstruction of the inferior right hepatic vein and/or MHV tributaries from segment 5 (V5) and segment 8 (V8) using a vein harvested from a nonrelated deceased donor. Before initiating the hepatic graft implantation, we applied fibrin sealant in the resected parenchyma, especially in the V5 and V8 anastomosis, to seal the hepatic edge and hepatic vein reconstruction. Results. No bleeding was identified in the hepatic edge, and blood product transfusion was unnecessary for any recipients after reperfusion. Conclusion. In LDLT using MRLG with MHV reconstruction, the fibrin sealant, when applied on the raw hepatic surface, and vascular reconstruction during back table graft preparation avoided bleeding after graft revascularization.
  • article 13 Citação(ões) na Scopus
    Arterial Pseudoaneurysm Associated with Pancreas and Kidney Transplantation: A Case Report
    (2017) ARANTES, Rubens Macedo; PANTANALI, Carlos Andres Rodriguez; SANTOS, Vinicius Rocha; D'ALBUQUERQUE, Luiz Augusto Carneiro
    Objective: Unusual clinical course Background: Pseudoaneurysm is a rare vascular complication in pancreas transplantation. This complication develops from a disruption of the arterial continuity, usually related to trauma, infection, vasculitis, or complications in vascular procedures. Case Report: A 43-year-old man underwent simultaneous pancreas and kidney transplantation for end-stage renal disease. He subsequently developed acute pancreatitis and acute kidney cellular rejection as late complications, thus returning to hemodialysis. A new, uneventful kidney transplantectomy and living donor kidney transplant was performed. One year after the last transplant, the patient presented with moderate abdominal pain, fever, and a pulsatile tumor located in the right iliac fossa. A pseudoaneurysm located in the pancreatic Y graft was observed. The patient was treated using an endovascular and surgical approach. Conclusions: A combined procedure using an endovascular and surgical approach promoted a good vascular control with a lower risk of bleeding in a rare case of pseudoaneurysm in a transplant patient.
  • article 5 Citação(ões) na Scopus
    PREOPERATIVE COMPUTED TOMOGRAPHY VOLUMETRY AND GRAFT WEIGHT ESTIMATION IN ADULT LIVING DONOR LIVER TRANSPLANTATION
    (2017) PINHEIRO, Rafael S.; CRUZ-JR, Ruy J.; ANDRAUS, Wellington; DUCATTI, Liliana; MARTINO, Rodrigo B.; NACIF, Lucas S.; ROCHA-SANTOS, Vinicius; ARANTES, Rubens M; LAI, Quirino; IBUKI, Felicia S.; ROCHA, Manoel S.; D´ALBUQUERQUE, Luiz A. C.
    ABSTRACT Background: Computed tomography volumetry (CTV) is a useful tool for predicting graft weights (GW) for living donor liver transplantation (LDLT). Few studies have examined the correlation between CTV and GW in normal liver parenchyma. Aim: To analyze the correlation between CTV and GW in an adult LDLT population and provide a systematic review of the existing mathematical models to calculate partial liver graft weight. Methods: Between January 2009 and January 2013, 28 consecutive donors undergoing right hepatectomy for LDLT were retrospectively reviewed. All grafts were perfused with HTK solution. Estimated graft volume was estimated by CTV and these values were compared to the actual graft weight, which was measured after liver harvesting and perfusion. Results: Median actual GW was 782.5 g, averaged 791.43±136 g and ranged from 520-1185 g. Median estimated graft volume was 927.5 ml, averaged 944.86±200.74 ml and ranged from 600-1477 ml. Linear regression of estimated graft volume and actual GW was significantly linear (GW=0.82 estimated graft volume, r2=0.98, slope=0.47, standard deviation of 0.024 and p<0.0001). Spearman Linear correlation was 0.65 with 95% CI of 0.45 - 0.99 (p<0.0001). Conclusion: The one-to-one rule did not applied in patients with normal liver parenchyma. A better estimation of graft weight could be reached by multiplying estimated graft volume by 0.82.
  • article 17 Citação(ões) na Scopus
    Hérnias abdominais e inguinais em pacientes cirróticos: qual é a melhor conduta?
    (2012) SILVA, Felipe Duarte; ANDRAUS, Wellington; PINHEIRO, Rafael Soares Nunes; ARANTES-JUNIOR, Rubens Macedo; LEMES, Marcus Paulo Lemos; DUCATTI, Liliana de Souza e Silva; D'ALBUQUERQUE, Luiz Augusto Carneiro
    BACKGROUND: Traditionally, elective abdominal procedures in cirrhotic patients have been largely discouraged due to high morbidity and mortality consequent to complications of cirrhosis, described by several authors. Other services, however, obtained different results, advocating in favor of elective surgery. METHODS: A literature review using as key-words ""abdominal wall hernia"" and ""cirrhotic patients"" was performed using PubMed database. Twenty-eight articles were considered. RESULTS: The incidence of abdominal wall hernias is relatively high in cirrhotic patients, specially those with ascites, and many of these are unfavorable and require specific surgical treatment. Currently, with the advent of MELD score for organ allocation, many centers are reconsidering their approach on leading these situations, since most of patients in question are on waiting list for liver transplantation. Thus elective surgery has achieved major position in managing this condition in order to reduce morbidity and mortality in these patients. Moreover, the quality of life was an important factor to be considered, being badly damaged in this condition. CONCLUSION: Few studies with large samples have been conducted so far and there is no consensus on which conduct is the most suitable taking into consideration rates of morbidity and mortality.
  • article 212 Citação(ões) na Scopus
    Livebirth after uterus transplantation from a deceased donor in a recipient with uterine infertility
    (2018) EJZENBERG, Dani; ANDRAUS, Wellington; MENDES, Luana Regina Baratelli Carelli; DUCATTI, Liliana; SONG, Alice; TANIGAWA, Ryan; ROCHA-SANTOS, Vinicius; ARANTES, Rubens Macedo; SOARES JR., Jose Maria; SERAFINI, Paulo Cesar; HADDAD, Luciana Bertocco de Paiva; FRANCISCO, Rossana Pulcinelli; D'ALBUQUERQUE, Luiz Augusto Carneiro; BARACAT, Edmund Chada
    Background Uterus transplantation from live donors became a reality to treat infertility following a successful Swedish 2014 series, inspiring uterus transplantation centres and programmes worldwide. However, no case of livebirth via deceased donor uterus has, to our knowledge, been successfully achieved, raising doubts about its feasibility and viability, including whether the womb remains viable after prolonged ischaemia. Methods In September, 2016, a 32-year-old woman with congenital uterine absence (Mayer-Rokitansky-KusterHauser [MRKH] syndrome) underwent uterine transplantation in Hospital das Clinicas, University of Sao Paulo, Brazil, from a donor who died of subarachnoid haemorrhage. The donor was 45 years old and had three previous vaginal deliveries. The recipient had one in-vitro fertilisation cycle 4 months before transplant, which yielded eight cryopreserved blastocysts. Findings The recipient showed satisfactory postoperative recovery and was discharged after 8 days' observation in hospital. Immunosuppression was induced with prednisolone and thymoglobulin and continued via tacrolimus and mycophenalate mofetil (MMF), until 5 months post-transplantation, at which time azathioprine replaced MMF. First menstruation occurred 37 days post-transplantation, and regularly (every 26-32 days) thereafter. Pregnancy occurred after the first single embryo transfer 7 months post-transplantation. No blood flow velocity waveform abnormalities were detected by Doppler ultrasound of uterine arteries, fetal umbilical, or middle cerebral arteries, nor any fetal growth impairments during pregnancy. No rejection episodes occurred after transplantation or during gestation. Caesarean delivery occurred on Dec 15, 2017, near gestational week 36. The female baby weighed 2550 g at birth, appropriate for gestational age, with Apgar scores of 9 at 1 min, 10 at 5 min, and 10 at 10 min, and along with the mother remains healthy and developing normally 7 months post partum. The uterus was removed in the same surgical procedure as the livebirth and immunosuppressive therapy was suspended. Interpretation We describe, to our knowledge, the first case worldwide of livebirth following uterine transplantation from a deceased donor in a patient with MRKH syndrome. The results establish proof-of-concept for treating uterine infertility by transplantation from a deceased donor, opening a path to healthy pregnancy for all women with uterine factor infertility, without need of living donors or live donor surgery.
  • article 3 Citação(ões) na Scopus
    Attitude and knowledge of medical students toward donation after circulatory death
    (2021) MARTINO, Rodrigo Bronze de; GUIDOTTE, Diogo Visconti; WAISBERG, Daniel Reis; SANTOS, Alexandre Guerra dos; CASSENOTE, Alex Jones Flores; ARANTES, Rubens Macedo; HADDAD, Luciana Bertocco; GALVAO, Flavio Henrique; CARNEIRO-D'ALBUQUERQUE, Luiz Augusto
    OBJECTIVE: A survey among medical students in a Brazilian public university was performed to investigate the acceptance of organ donation in Brazil, particularly donation after circulatory death (DCD). METHODS: A questionnaire including 26 objectives and Likert scale questions was validated and sent to all medical students of our institution. The answers were analyzed considering the whole set of individuals as well as by dividing the medical students into two groups: less graduated students and more graduated students. RESULTS: From 1050 students, 103 spontaneous answers (9.8%) were retrieved after 3 weeks. A total of 89.3% agreed totally with deceased donor organ donation and 8.7% agreed partially. However, only 50.5% of the students agreed totally and 31.1% agreed partially to living donation. Students revealed that 82.6% know the concept of brain death. On the other hand, 71.8% of them declared not knowing the concept of planned withdrawal of life-sustaining therapy, mainly cardiorespiratory support. A total of 85.4% of students agreed totally with donation after brain death and 11.7% agreed partially. However, when questioned about donation in awaiting circulatory death after a planned withdrawal of life-sustaining therapy, only 18.4% agreed totally and 32% agreed partially. Both groups of less and more graduated students showed similar results. CONCLUSIONS: Our study found a clear lack of information and consequently in acceptance of DCD. Education in the field of end-oflife management may improve not only the acceptance of DCD donation but also the whole understanding of planned withdrawal of life-sustaining therapy.
  • article 2 Citação(ões) na Scopus
    CIRRHOTIC PATIENTS WITH ACUTE KIDNEY INJURY (AKI) HAVE HIGHER MORTALITY AFTER ABDOMINAL HERNIA SURGERY
    (2021) DUCATTI, Liliana; HADDAD, Luciana B. P.; MEYER, Alberto; NACIF, Lucas S.; ARANTES, Rubens M.; MARTINO, Rodrigo B.; ROCHA-SANTOS, Vinicius; WAISBERG, Daniel R.; PINHEIRO, Rafael S.; D'ALBUQUERQUE, Luiz A. C.; ANDRAUS, Wellington
    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. Methods: Follow-up of 174 cirrhotic patients who underwent hernia surgery. Laboratory tests including the renal function were collected in the PO.AKI was defined based on the consensus of the ascite's club. They were divided into two groups: with (AKI PO) and without AKI .Results: All 174 patients were enrolled and AKI occurred in 58 (34.9%). In the AKI PO group, 74.1% had emergency surgery, whereas in the group without AKI PO it was only 34.6%.In the group with AKI PO, 90.4% presented complications, whereas in the group without AKI PO they occurred only in 29.9%. Variables age, baseline MELD, baseline creatinine, creatinine in immediate postoperative (POI), AKI and the presence of ascites were statistically significant for survival. Conclusions: There is association between AKI PO and emergency surgery and, also, between AKI PO and complications after surgery. The factors related to higher occurrence were initial MELD, basal Cr, Cr POI. The patients with postoperative AKI had a higher rate of complications and higher mortality.
  • article 0 Citação(ões) na Scopus
    Prevalence of chronic venous insufficiency and deep vein thrombosis in cirrhotic patients
    (2023) RENO, Leonardo da Cruz; TUSTUMI, Francisco; WAISBERG, Daniel Reis; SANTOS, Vinicious Rocha; PINHEIRO, Rafael Soares; MACEDO, Rubens Arantes; NACIF, Lucas Souto; DUCATTI, Liliana; MARTINO, Rodrigo Bronze De; TREVISAN, Alexandre Maximiniano; D'ALBUQUERQUE, Luiz Carneiro; ANDRAUS, Wellington
    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. The aim of this study is to evaluate the prevalence of DVT (Deep Venous thrombosis) in outpatients with cirrhosis and the degree of chronic venous insufficiency, evaluating possible correlations between clinical and laboratory aspects of cirrhotic patients with these pathologies.Methods: Patients with cirrhosis were evaluated in the outpatient clinic of the Liver Transplantation and Hepatology Service of HC-FMUSP from November 2018 to November 2022, with clinical evaluation, venous disease questionnaires, data collection of imaging and laboratory tests, and venous color Doppler ultrasound. The information was analyzed by the University of Sao Paulo (USP) Statistics Department.Results: There was a prevalence of 7.6% of DVT in studied patients, VCSS score 6.73 and severe CEAP classification (C4-6) 32.1%. There was no association of DVT with qualitative variables by the Fisher test such as Child Turcotte Pugh Scale (CTP) (p = 0.890), dichotomized INR values (p = 0.804), etiology of cirrhosis (p = 0.650) and chronic kidney disease (p > 0.999), nor with quantitative variables by t-student's such as age (p = 0.974), Body Mass Index (BMI) (p = 0.997), MELD score (p = 0.555), Albumin (p = 0.150) and Platelets (p = 0.403). We found that as the severity of ascites increases, there is an increase in the proportion of patients classified in the category indicating more severe clinical manifestations of chronic venous disease (C4 to C6). The mean age (54 years) was higher in patients with DVT than in those without. The mean BMI of patients without DVT (25.7 kg/m(2)) is lower than that of patients with DVT (27.0 kg/m(2)). The prevalence of DVT is higher in patients with thrombophilia (20.0%) than in those without (7.0%). This suggests an association between the two variables. The descriptive measures of the MELD score, the cirrhosis scale used for liver transplant waiting lists, did not indicate an association of this scale with the occurrence of DVT.Conclusion: The incidence of VTE (Venous Thromboembolic Events) and CVD (Chronic Venous Disease) within the sample surpassed that of the general population; nevertheless, more studies are required to validate these results. Concerning venous thromboembolism, no correlation was observed between the variables within the sample and the augmented risk of VTE. Regarding chronic venous disease, studies have shown that edema and orthostatism are correlated with increased severity of CVD on the VCSS scales. Statistical dispersion methods suggest that patients with higher BMI and more severe liver disease (according to the Child-Pugh score) are more likely to experience worsening of CVD. About chronic venous disease, studies have shown that edema and orthostatism are correlated with increased severity of CVD on the VCSS scales.
  • article 1 Citação(ões) na Scopus
    COVID-19 Pandemic Impact on Liver Donation in the Largest Brazilian Transplantation Center
    (2022) FORTUNATO, Allana C.; PINHEIRO, Rafael S.; FERNANDES, Michel Ribeiro; NACIF, Lucas Souto; ARANTES, Rubens Macedo; ROCHA-SANTOS, Vinicius; WAISBERG, Daniel Reis; MARTINO, Rodrigo Bronze De; DUCATTI, Liliana; HADDAD, Luciana Bertocco; SONG, Alice Tung; ABDALA, Edson; ANDRAUS, Wellington; CARNEIRO-D'ALBUQUERQUE, Luiz Augusto
    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. Methods. We retrospectively reviewed all liver donor records allocated in Sao Paulo State, Brazil, 1 year before and 1 year during the COVID-19 pandemic. We defined the pre-COVID-19 (PRE) period as between April 2019 and April 2020 and the post-COVID-19 (POST) period as between April 2020 and April 2021. Moreover, we compared LT performed in our institution during these periods. To evaluate outcomes, we compared 30-day survival after LT. Results. In the PRE period, 1452 livers were offered for donation in Sao Paulo State and other Brazilian territories. Of these, 592 were used in LT. In the POST period, 1314 livers were offered for donation, but only 477 were used in LT. Organ refusal was higher in the POST period (P < .05). Our center performed 127 and 156 LTs in these periods, respectively, and an increase above 20% was significant (P = .039). There was no difference in 30-day survival between the periods (87.2% vs 87.9%, P > .5, respectively). Conclusions. The COVID-19 pandemic harmed potential and allocated donors and LTs per-formed. However, it is possible to maintain the LT volume of a transplant center without compromising survival outcomes through preventive strategies against COVID-19 propagation.
  • article 1 Citação(ões) na Scopus
    Uterus procurement from deceased donor for transplantation
    (2021) CASTRO, Felipe; EJZENBERG, Dani; PINHEIRO, Rafael S.; DUCATTI, Liliana; ARANTES, Rubens M.; NACIF, Lucas; WAISBERG, Daniel; MARTINO, Rodrigo B.; SANTOS, Vinicius R.; JR, Jose Maria Soares; BARACAT, Edmund Chada; D'ALBUQUERQUE, Luiz Augusto Carneiro; ANDRAUS, Wellington; CANAVAL, Hoover; CANAVAL, Gustavo; RICO, Juan Manuel; VANIN, Anabel
    Women with absolute uterine factor infertility cannot get pregnant. The current experience in uterine transplantation is limited and the use of a deceased donor uterus in this area is incipient after some initial unsuccessful attempts. The birth of healthy babies through this modality in four different centers has given a new impetus to the use of this transplantation technique. We aimed to develop a technique for uterus procurement and preparation for transplantation from a brain dead donor. Fifteen uteri were retrieved from multi-organ donor patients, 10 of these were used in bench surgeries with the proposed technique. All procedures were performed after obtaining family's consent. This study allowed the clinical use of two of the 15 organs that were procured for transplantation. One of these organs resulted in the first live birth worldwide using a uterus transplanted from a deceased donor, a landmark in reproductive medicine. Another outcome was the optimization of the surgical technique involving less manipulation of the uterine vascular pedicles. The success of this novel technique suggests that the proposed model can be replicated and optimized further to facilitate the transplantation of uterus from deceased donors.