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1.
Ann Med Surg (Lond) ; 86(3): 1522-1530, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38463089

RESUMO

Background: Post-transplant lymphoproliferative diseases (PTLD) are a heterogeneous collection of neoplasms that occur after solid organ transplants (SOT). In the past 20 years, there has been a rise in PTLD research. This study aims to investigate the global research output and interest regarding PTLD using a bibliometric approach. Material and methods: On 28 November 2022, the Web of Science Core Collection documents on PTLD published between 2000 and 2022 were collected and analyzed using bibliometric techniques. The VOSviewer application was utilized to visualize the annual number of publications, authors, organizations, countries, published journals, citations, and most occurring keywords. Results: A total of 2814 documents were retrieved, and a screening process included 1809 documents. The total number of citations was 45 239, and the average number per item was 25. Most articles (n = 747) and citations (n = 25 740) were produced in the United States. Based on citations, most of the top 10 institutions that contributed were in the United States of America. The University of Pittsburgh topped the list with 2700 citations and 64 articles. The vast majority of articles were published in Pediatric Transplantation (n = 147), Transplantation (n = 124), and the American Journal of Transplantation (n = 98). Transplantation has received the most citations, 6499, followed by the American Journal of Transplantation with 5958 citations and Blood with 4107 citations. Conclusion: With ongoing debates over optimal classification, Epstein-Bar virus involvement, and treatment, this topic has received significant interest from researchers in recent years. Our results can be used as a guide for future research in the field and as a framework for a more in-depth look at the scientific progress of PTLD.

2.
Int J Med Robot ; 19(5): e2527, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37190677

RESUMO

BACKGROUND: Robotic transplant surgery has garnered worldwide attention since 2002. Discussions on this issue have led to more publications over the past decade. This study assessed global robotic organ transplantation studies using bibliometric analysis. METHOD: The study sample was robotic technique use in organ transplantation publications from 2002 to 2021 in the Web of Science database. We analysed top-cited authors, countries, institutions, journals, and keywords. Citations were used to visualise and analyse target literature in VOSviewer. RESULTS: 160 articles were included in the bibliometric study. Among the nations that are presently involved in the use of robotics in organ transplantation research, the United States of America leads robotic organ transplantation studies. The American Journal of Transplantation published the most articles overall. CONCLUSION: Based on publication and citation numbers, robotic organ transplantation techniques are becoming more global attention. This robotic abdominal organ transplant surgery bibliometric analysis review covers research output and hotspots.


Assuntos
Transplante de Órgãos , Procedimentos Cirúrgicos Robóticos , Robótica , Humanos , Estados Unidos , Bibliometria , Bases de Dados Factuais
3.
Cureus ; 15(4): e38104, 2023 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-37252599

RESUMO

Citation analysis uses the number of times an author, article, or publication has been cited to determine its relative importance or effect. To provide an overview and identify the articles that have gotten the most attention in the field of kidney transplantation, this bibliometric analysis was conducted to analyze the top 100 most cited articles in the Scopus database. The search terms "kidney" and "renal" and transplant-related words such as "transplant," "donor," "recipient," and "procurement" were used to search the Scopus database. Articles up to the query date of December 21, 2022, were included, and all document types including articles, reviews, conference papers, editorials, book chapters, and meeting abstracts were analyzed. The analysis focused on authors, annual trends, journals, and countries. A total of 68,271 articles related to kidney transplantation were published in the Scopus database up to the search date of December 21, 2022. The top 100 cited papers had a total of 76,029 citations, with a mean citation count of 760.3 ± 284.6. The most cited article was a clinical practice guideline paper published by the Kidney Disease: Improving Global Outcomes (KDIGO) Work Group. The top cited journals were the New England Journal of Medicine, Transplantation, and the American Journal of Transplantation. The most productive authors were primarily based in the United States, with the most frequently cited first author being Kasiske B.L. The greatest number of articles and citations were published between 2000 and 2005. This bibliometric analysis provides a comprehensive overview of the top cited articles in the field of kidney transplantation. The results highlight the most influential and impactful research, as well as the most productive authors, journals, and countries. These findings can be used to guide future research and support decision-making in funding and policy.

4.
J Gastrointest Surg ; 26(7): 1453-1461, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-35428935

RESUMO

BACKGROUND: Use of livers donated after circulatory death (DCD) is one way to expand the donor pool. Our center has aggressively incorporated use of DCD liver grafts into practice. We examined our center and national outcomes as well as national DCD liver utilization. METHODS: Liver transplants performed at our center and nationally from 11/2016 through 9/2020 were compared. Primary outcomes were patient and graft survival, and national DCD liver utilization. RESULTS: For our center, DCD and donation after brain death (DBD) donors were similar except DCD donors were younger (37 vs 40 years; p < 0.05). Recipient Na-MELD (20 vs 24; p < 0.0001) and cold ischemia time (4.63 vs 5.18 h; p < 0.05) were lower in DCD recipients. There were no significant differences in 1-year patient and graft survival between DCD and DBD liver recipients locally. Nationally, there was a difference in 1-year graft survival year (89.4% vs 92.4%, p < 0.0001) but patient survival was similar between groups. The proportion of DCD livers recovered and transplanted widely varied among organ procurement organizations (OPOs) and transplant centers. CONCLUSIONS: Similar outcomes for DCD and DBD liver recipients should encourage centers and OPOs nationwide to expand utilization of DCD livers.


Assuntos
Morte Encefálica , Obtenção de Tecidos e Órgãos , Sobrevivência de Enxerto , Humanos , Fígado , Estudos Retrospectivos , Doadores de Tecidos
5.
Exp Clin Transplant ; 20(8): 776-779, 2022 08.
Artigo em Inglês | MEDLINE | ID: mdl-32552625

RESUMO

Primary nonfunction is a rare but lethal complication that occurs in a small number of liver transplants. When primary nonfunction occurs, the only definite treatment is retransplant; however, another liver might not be readily available at that time. Hence, a surgeon should be aware of the various options available at hand for patient care during the time interval between the primary nonfunction and retransplant. Here, we describe the management strategy that was devised to take care of an unstable anhepatic patient in the intensive care unit, care of the patient during anhepatic phase, and successful outcome with a second liver transplant. Our index patient was a recipient of a liver donated after cardiac death. While in the operating room, after reperfusion of the liver, the patient had right heart dysfunction leading to hemodynamic instability and congestion of the liver, which culminated in primary nonfunction. Graft hepatectomy had to be done on postoperative day 1 because of deteriorating condition of the patient, and the patient was maintained in anhepatic phase in the intensive care unit for 27 hours.


Assuntos
Hepatectomia , Transplante de Fígado , Hepatectomia/efeitos adversos , Humanos , Fígado , Transplante de Fígado/efeitos adversos , Fatores de Tempo , Resultado do Tratamento
6.
Am J Surg ; 223(4): 804-811, 2022 04.
Artigo em Inglês | MEDLINE | ID: mdl-34253338

RESUMO

BACKGROUND: Hypothermic machine perfusion (HMP) parameters are influenced by donor variables which further affect recipient outcome. Interplay between these parameters can help to predict kidney performance on pump and the long term outcome. METHODS: All the kidneys transplanted at our center between May 2013 through November 2017 were included in the study. Donor and recipient data was obtained from internal database. Multiple logistic regression models with backward selection were used to determine significant donor and pump variables. RESULTS: Donor BMI, KDPI, age and donor sex had a significant association with pump flow. Donor sex, donor type, KDPI and age had significant effect on RI. Diastolic pressure and KDPI were significantly associated with DGF. Duration on pump, KDPI, flow, donor creatinine and type of donor were significantly associated with day 5 creatinine. KDPI was significantly associated with Day 365 creatinine. CONCLUSION: HMP effects early graft function while the long term function depends on donor parameters.


Assuntos
Função Retardada do Enxerto , Transplante de Rim , Aloenxertos , Creatinina , Sobrevivência de Enxerto , Humanos , Rim , Preservação de Órgãos , Perfusão , Doadores de Tecidos
7.
Exp Clin Transplant ; 20(7): 702-705, 2022 07.
Artigo em Inglês | MEDLINE | ID: mdl-33272154

RESUMO

Dyskeratosis congenita, a rare genetic disorder typified by progressive bone marrow failure, is classically characterized by the triad of abnormal skin pigmentation, nail dystrophy, and oral leukoplakia; however, it is a multisystem disease. Although hepatic involvement occurs in about 7% of patients with dyskeratosis congenita, end-stage liver disease is rare. Treatment of dyskeratosis congenita generally involves hematopoietic stem cell transplant. For patients with hepatic failure, liver transplant can be an option. Here, we describe a case of a patient with dyskeratosis congenita who presented with liver failure and pulmonary failure, precluding him from hematopoietic stem cell transplant. After liver transplant, the patient had significant improvements in pulmonary function and transfusion requirements, allowing the patient to qualify for hematopoietic stem cell transplant. Although hematopoietic stem cell transplant is typically the first step in the management of dyskeratosis congenita, for patients with severe hepatic manifestations of the disease, a liver transplant first approach may result in better disease management.


Assuntos
Disceratose Congênita , Transplante de Fígado , Disceratose Congênita/complicações , Disceratose Congênita/diagnóstico , Disceratose Congênita/genética , Humanos , Leucoplasia Oral/complicações , Fígado , Transplante de Fígado/efeitos adversos , Masculino , Resultado do Tratamento
8.
Exp Clin Transplant ; 20(6): 609-612, 2022 06.
Artigo em Inglês | MEDLINE | ID: mdl-32039669

RESUMO

Patients with glycogen storage diseases pose unique management challenges to clinicians.These challenges are exacerbated wheneverthey undergo surgery as the basic anomaly in their glycogen storage pathways make them susceptible to organic acidosis, which may in turn complicate their preoperative, intraoperative, and postoperative course. Because of the rarity of these diseases, clinicians may not be aware of the specific management concerns. In the case reported here, a 37-year-old patient with glycogen storage disease type 1 underwentleft hepatectomy for hepatic adenomatosis, which was complicated by intraoperative severe lactic acidosis that was successfully treated. After successful hepatectomy, the patient underwent liver transplant without major lactic acidosis or hemodynamic instability. Early recognition and aggressive management of blood sugar and lactic acidosis in patients with glycogen storage diseases can allow for successful outcomes even when complex surgical procedures are required.


Assuntos
Acidose Láctica , Doença de Depósito de Glicogênio , Adulto , Doença de Depósito de Glicogênio/diagnóstico , Doença de Depósito de Glicogênio/cirurgia , Hepatectomia , Humanos , Fígado , Resultado do Tratamento
9.
Exp Clin Transplant ; 19(8): 771-778, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-33877039

RESUMO

OBJECTIVES: Liver allograft shortage has necessitated greater use of donations after circulatory death. Limited data are available to compare recipients' health care utilization for donation after circulatory death versus brain death. MATERIALS AND METHODS: Liver transplant data for our center from November 2016 until May 2019 were obtained (208 donations after brain death and 39 after circulatory death). We excluded patients <18 years old and multiorgan transplants; for cost data only, we also excluded retransplants. Primary outcome was recipients' health care utilization in donation after circulatory death versus brain death and included index admission length of stay, readmissions, and charges from transplant to 6 months. Secondary outcomes were patient and graft survival. RESULTS: Donors from circulatory death were younger than donors from brain death (median age 32 vs 40 years; P < .01). Recipient body mass index (31.23 vs 29.38 kg/m2), Model for End-Stage Liver Disease score (17 vs 19), portal vein thrombosis (15.8% vs 18.0%), length of stay (7 vs 8 days), and 30-, 90-, and 180-day posttransplant index admissions were not significantly different. Charges for index admission were equivalent for donation after circulatory death ($370771) and brain death ($374272) (P = .01). Charges for readmissions at 30 and 180 days were not significantly different (P = .80 and P = .19, respectively). Rates for graft failure (10.3% vs 4.8%; P = .08) and recipient death (10.3% vs 3.8%; P = .17) at 6 months posttransplant were similar. CONCLUSIONS: Donation after circulatory death versus brain death liver transplant recipients had similar lengths of stay and equivalent index admission charges. Graft and patient survival and charges from transplant to 6 months were similar. Donation after circulatory death liver allografts provide a safe, costequivalent donor pool expansion after careful donorrecipient selection.


Assuntos
Doença Hepática Terminal , Transplante de Fígado , Obtenção de Tecidos e Órgãos , Adolescente , Adulto , Morte Encefálica , Morte , Doença Hepática Terminal/diagnóstico , Doença Hepática Terminal/cirurgia , Sobrevivência de Enxerto , Humanos , Transplante de Fígado/efeitos adversos , Estudos Retrospectivos , Índice de Gravidade de Doença , Taxa de Sobrevida , Doadores de Tecidos , Resultado do Tratamento
10.
Ann Hepatol ; 24: 100318, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33515801

RESUMO

INTRODUCTION AND OBJECTIVES: The success of direct-acting antivirals (DAA) has transformed the management of hepatitis C virus (HCV) infection and has led to the expansion of the deceased donor organ pool for liver transplantation. MATERIAL AND METHODS: We present a single center retrospective review of liver transplantations performed on HCV-seronegative recipients from HCV-seropositive organs from 11/2017 to 05/2020. HCV nucleic acid testing (NAT) was performed on HCV-seropositive donors to assess active HCV infection. RESULTS: 42 HCV-seronegative recipients underwent a liver transplant from a HCV-seropositive donor, including 21 NAT negative (20 liver, 1 simultaneous liver kidney transplant) and 21 NAT positive liver transplants. Two (9.5%) HCV antibody positive/NAT negative recipients developed HCV viremia and achieved sustained virologic response with DAA therapy. The remaining patients with available data (19 patients) remained polymerase chain reaction (PCR) negative at 6 months. 20 (95%) of HCV antibody positive/NAT positive recipients had a confirmed HCV viremia. 100% of patients with available data (15 patients) achieved SVR. Observed events include 1 mortality and graft loss and equivalent rates of post-transplant complications between NAT positive and NAT negative recipients. CONCLUSIONS: HCV-seropositive organs can be safely transplanted into HCV-seronegative patients with minimal complications post-transplant.


Assuntos
Seleção do Doador , Hepacivirus/isolamento & purificação , Hepatite C/diagnóstico , Hepatopatias/cirurgia , Hepatopatias/virologia , Transplante de Fígado , Adulto , Idoso , Antivirais/uso terapêutico , Feminino , Hepatite C/epidemiologia , Hepatite C/terapia , Humanos , Hepatopatias/diagnóstico , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Resposta Viral Sustentada , Resultado do Tratamento
11.
Exp Clin Transplant ; 19(4): 374-377, 2021 04.
Artigo em Inglês | MEDLINE | ID: mdl-30501587

RESUMO

OBJECTIVES: Large spontaneous splenorenal shunts can result in portal vein steal syndrome and is a risk factor for portal vein thrombosis after orthotopic liver transplant. Disconnection of these shunts by left renal vein ligation has been suggested as a potential technique for improving portal venous flow and mitigating risk of portal vein thrombus, thus improving graft perfusion. We present a series of 6 patients who underwent left renal vein ligation for spontaneous splenorenal shunts and their outcomes. MATERIALS AND METHODS: This retrospective analysis included all orthotopic liver transplant recipients who underwent left renal vein ligation for spontaneous splenorenal shunts between 2016 and 2017. Portal venous flow, patency, and renal function were assessed postoperatively. Liver Doppler ultrasonography scans were obtained 1, 3, and 5 days postligation, and serum creatinine was evaluated at 1 and 2 weeks and 1, 3, 6, and 12 months postligation. RESULTS: Over the 1-year study period, 92 orthotopic liver transplants were performed. In 6 patients who underwent left renal vein ligation, spontaneous splenorenal shunts were identified preoperatively. One patient received a retransplant complicated by portal vein thrombus and underwent thrombectomy with left renal vein ligation. Concurrent left renal vein ligation and liver transplant were performed in 5 patients, 2 with known portal vein thrombus at the time of transplant requiring thrombectomy. All patients had subjective intraoperative improvements in portal venous flow after ligation. Zero patients developed postoperative portal vein thrombus. No patients developed clinically significant renal dysfunction at 1-year follow-up. CONCLUSIONS: Left renal vein ligation is technically feasible, has minimal and transient effects on renal function, and can improve portal venous flow, thus mitigating the risk for portal vein thrombus, graft hypoperfusion, and possible dysfunction.


Assuntos
Transplante de Fígado , Veias Renais , Derivação Esplenorrenal Cirúrgica , Trombose , Humanos , Transplante de Fígado/efeitos adversos , Veias Renais/diagnóstico por imagem , Veias Renais/cirurgia , Estudos Retrospectivos , Trombose/diagnóstico por imagem , Trombose/etiologia , Trombose/prevenção & controle , Resultado do Tratamento
12.
J Pediatr Hematol Oncol ; 43(4): e605-e607, 2021 05 01.
Artigo em Inglês | MEDLINE | ID: mdl-32590423

RESUMO

We present the case of a successful liver transplant in a young adult patient with cholestasis and cirrhosis secondary to severe pyruvate kinase (PK) deficiency. Liver transplant resulted in resolution of liver dysfunction, decreased need for blood transfusions and eligibility for bone marrow transplantation. This case represents the third reported patient in the literature with severe PK deficiency who successfully underwent liver transplant as a result of profound cholestasis and liver failure. Explant pathology demonstrated a lack of significant iron deposition indicating that PK deficiency predisposes the liver to injury independent of transfusion-related iron overload.


Assuntos
Anemia Hemolítica Congênita não Esferocítica/complicações , Cirrose Hepática/etiologia , Cirrose Hepática/terapia , Transplante de Fígado , Piruvato Quinase/deficiência , Erros Inatos do Metabolismo dos Piruvatos/complicações , Adolescente , Anemia Hemolítica Congênita não Esferocítica/patologia , Colestase/etiologia , Colestase/patologia , Colestase/terapia , Feminino , Humanos , Cirrose Hepática/patologia , Erros Inatos do Metabolismo dos Piruvatos/patologia , Resultado do Tratamento
13.
Am J Transplant ; 21(1): 307-313, 2021 01.
Artigo em Inglês | MEDLINE | ID: mdl-32463950

RESUMO

Burnout among surgeons has been attributed to increased workload and decreased autonomy. Although prior studies have examined burnout among transplant surgeons, no studies have evaluated burnout in abdominal transplant surgery fellows. The objective of our study was to identify predictors of burnout and understand its impact on personal and patient care during fellowship. A survey was sent to all abdominal transplant surgery fellows in an American Society of Transplant Surgeons-accredited fellowship. The response rate was 59.2% (n = 77) and 22.7% (n = 17) of fellows met criteria for burnout. Fellows with lower grit scores were more likely to exhibit burnout compared with fellows with higher scores (3.6 vs 4.0, P = .026). Those with burnout were more likely to work >100 hours per week (58.8% vs 27.6%, P = .023), have severe work-related stress (58.8% vs 22.4%, P = .010), consider quitting fellowship (94.1% vs 20.7%, P < .001), or make a medical error (35.3% vs 5.2%, P = .003). This national analysis of abdominal transplant fellows found that burnout rates are relatively low, but few fellows engage in self-care. Personal and program-related factors attribute to burnout and it has unacceptable effects on patient care. Transplant societies and fellowship programs should develop interventions to give fellows tools to prevent and combat burnout.


Assuntos
Esgotamento Profissional , Cirurgiões , Esgotamento Profissional/etiologia , Bolsas de Estudo , Humanos , Inquéritos e Questionários , Estados Unidos/epidemiologia
14.
Sci Rep ; 10(1): 19254, 2020 11 06.
Artigo em Inglês | MEDLINE | ID: mdl-33159123

RESUMO

Reduction of early hospital readmissions is a declared goal in the United States economic and quality improvement agenda. A retrospective study was performed using the Nationwide Readmissions Database from 2010 to 2014. Our primary aim was to study the rate of early readmissions and its predictors in liver transplant recipients (LTRs). Our secondary aims were to determine the trends of LT, reasons for readmission, costs and predictors of calendar year mortality. Multivariable logistic regression and Cox proportional hazards models were utilized. The 30-day readmission rate was 30.6% among a total of 25,054 LTRs. Trends of LT were observed to be increased in patients > 65 years (11.7-17.8%, p < 0.001) and decreased in 40-64 years (78.0-73.5%, p = 0.001) during study period. The majority of 30-day readmissions were due to post transplant complications, with packed red blood cell transfusions being the most common intervention during readmission. Medicaid or Medicare insurance, surgery at low and medium volume centers, infections, hemodialysis, liver biopsy, and length of stay > 10 days were the predictors of 30-day readmission. Moreover, number of early readmission, age > 64 years, non-alcoholic cirrhosis, and length of stay > 10 days were significant predictor of calendar year mortality in LTRs. Approximately one third of patients require early admission after LT. Early readmission not only increases burden on healthcare, but is also associated with calendar year mortality. Strategies should be implemented to reduce readmission in patients with high risk of readmission identified in our study.


Assuntos
Bases de Dados Factuais , Tempo de Internação , Cirrose Hepática , Transplante de Fígado , Readmissão do Paciente , Adolescente , Adulto , Fatores Etários , Idoso , Feminino , Humanos , Cirrose Hepática/mortalidade , Cirrose Hepática/cirurgia , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Estados Unidos/epidemiologia
15.
Clin Transplant ; 34(12): e14115, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-33048383

RESUMO

The use of diabetic kidneys is increasing worldwide with better outcome than being on waitlist and possible reversal of diabetic changes in transplanted kidneys. But particular caution is warranted in diabetic donor-recipient combination. Total 1223 deceased donor kidney transplants were performed at our center between 2008 and 2018. 689 from non-diabetic donor (NDD) to non-diabetic recipient, 400 from non-diabetic donor to diabetic recipient, 97 from diabetic to non-diabetic recipient, and 32 from diabetic donor (DD) to diabetic recipient. The DD was older than NDDs (median age 48 vs 39 years, P < 0.0001). DD had higher BMI (35.6 vs 26.9, P < 0.0001), higher KDPI (74% vs 37%, P < 0.0001), and higher terminal creatinine (1.10 mg/dl vs 0.95 mg/dl, p 0.0046) than the NDD. Diabetes recipients were comparatively older (57 vs 54, P < 0.001). DD recipients had higher serum creatinine at 6 months (1.70 vs 1.50 mg/dl, p 0.00304) and 2 years post-transplant (1.70 vs 1.50 mg/dl P < 0.0002). DD recipients had more favorable end CPRA than NDD recipients (77.5% at 0% vs 67.4% at 0, P = 0.0074). Ten-year patient and graft survival was best in NDD-recipient pair and worse in DD-recipient pair. Diabetic donor kidneys to diabetic recipients have lower 1-, 3-, and 5-year graft survival.


Assuntos
Diabetes Mellitus , Transplante de Rim , Sobrevivência de Enxerto , Humanos , Rim , Pessoa de Meia-Idade , Doadores de Tecidos
16.
Clin Transplant ; 34(3): e13822, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-32037573

RESUMO

BACKGROUND: Hospital readmission (HR) after surgery is considered a quality metric. METHODS: Data on 2371 first-time adult kidney transplant (KT) recipients were collected to analyze the "early" (≤30 days) and "late" (31-365 days) HR patterns after KT at a single center over a 12-year time span (2002-2013). RESULTS: 30-day, 90-day, and 1-year HR were 31%, 41%, and 53%, respectively. Risk factors for HR included age >50, female sex, black race, BMI >30, transplant LOS >5 days, and pre-transplant time on dialysis >765 days. Indications for early (n = 749) and late (n = 508) HR were similar. Early HR (OR: 3.80, P = .007) and black race (OR: 2.38, P = .009) were associated with higher odds of 1-year graft failure while frequency (1-2, 3-4, 5+) of HR (ORs: 4.68, 8.36, 9.44, P < .001) and age > 50 (OR: 2.11, P = .007) were associated with higher odds of 1-year mortality. Transplant LOS > 5 days increased both odds of 1-year graft failure (OR: 3.51, P = .001) and mortality (OR: 2.05, P = .006). One-year graft and recipient survival were 96.7% and 94.8%, respectively. CONCLUSIONS: Hospital readmission was associated with reduced graft and patient survival; however, despite a relatively high and consistent HR rate after KT, overall 1-year graft and patient survival was high.


Assuntos
Transplante de Rim , Adulto , Feminino , Sobrevivência de Enxerto , Humanos , Readmissão do Paciente , Diálise Renal , Fatores de Risco , Transplantados
17.
Transplantation ; 104(11): 2424-2434, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32032292

RESUMO

BACKGROUND: We recently reported that a novel CXCR5IFN-γCD8 T-cell subset significantly inhibits posttransplant alloantibody production in a murine transplant model. These findings prompted the current study to investigate the association of human CD8 T cells with the same phenotype with the development of de novo donor-specific antibody (DSA) after kidney transplantation. METHODS: In the current studies, we prospectively and serially analyzed peripheral blood CD8 and CD4 T-cell subsets and monitored for the development of de novo DSA in kidney transplant recipients during the first-year posttransplant. We report results on 95 first-time human kidney transplant recipients with 1-year follow-up. RESULTS: Twenty-three recipients (24.2%) developed de novo DSA within 1-year posttransplant. Recipients who developed DSA had significantly lower quantities of peripheral CXCR5IFN-γCD8 T cells (P = 0.01) and significantly lower ratios of CXCR5IFN-γCD8 T cell to combined CD4 Th1/Th2 cell subsets (IFN-γCD4 and IL-4CD4 cells; P = 0.0001) compared to recipients who remained DSA-negative over the first-year posttransplant. CONCLUSIONS: Our data raise the possibility that human CXCR5IFN-γCD8 T cells are a homolog to murine CXCR5IFN-γCD8 T cells (termed antibody-suppressor CD8 T cells) and that the quantity of CXCR5IFN-γCD8 T cells (or the ratio of CXCR5IFN-γCD8 T cells to Th1/Th2 CD4 T cells) may identify recipients at risk for development of DSA.


Assuntos
Linfócitos T CD8-Positivos/imunologia , Antígenos HLA/imunologia , Histocompatibilidade , Interferon gama/sangue , Isoanticorpos/sangue , Transplante de Rim , Receptores CXCR5/sangue , Adulto , Idoso , Biomarcadores/sangue , Contagem de Linfócito CD4 , Linfócitos T CD4-Positivos/imunologia , Linfócitos T CD8-Positivos/metabolismo , Feminino , Humanos , Transplante de Rim/efeitos adversos , Masculino , Pessoa de Meia-Idade , Fenótipo , Estudos Prospectivos , Fatores de Tempo , Resultado do Tratamento
18.
Exp Clin Transplant ; 17(2): 274-277, 2019 04.
Artigo em Inglês | MEDLINE | ID: mdl-28540837

RESUMO

Since the inception of pancreas transplant as a treatment for type 1 diabetes mellitus, there has been considerable debate about the best way to manage exocrine secretions and monitor patients for graft rejection. For patients who undergo bladder exocrine drainage of a pancreatic allograft, a bladder-to-enteric drainage conversion can serve as a rescue procedure in case of anastomotic leaks or other complications. However, this procedure is associated with its own complications, including a rarely described enterovesical fistula. Here we report on a 45-year-old man who underwent a simultaneous kidney and pancreas transplant with bladder drainage to the latter. He developed a pancreatic allograft duodenal leak (duodenal-vesical anastomosis) requiring a bladder-to-enteric drainage conversion. The patient returned 2 weeks after discharge with an enterovesical fistula. He was treated nonsurgically with intravenous antibiotics, bowel rest, and parenteral nutrition, and the fistula successfully closed in approximately 2 weeks. Overall, enterovesical fistula formation is a rare but treatable complication that can occur after a bladder-to-enteric drainage conversion of a pancreatic transplant allograft. It can be managed nonsurgically, which is preferable in these immunocompromised patients.


Assuntos
Fístula Anastomótica/cirurgia , Drenagem/efeitos adversos , Duodenopatias/etiologia , Fístula Intestinal/etiologia , Transplante de Rim/efeitos adversos , Transplante de Pâncreas/efeitos adversos , Fístula da Bexiga Urinária/etiologia , Fístula Anastomótica/diagnóstico por imagem , Fístula Anastomótica/etiologia , Duodenopatias/diagnóstico por imagem , Duodenopatias/cirurgia , Humanos , Fístula Intestinal/diagnóstico por imagem , Fístula Intestinal/cirurgia , Masculino , Pessoa de Meia-Idade , Reoperação , Tomografia Computadorizada por Raios X , Resultado do Tratamento , Fístula da Bexiga Urinária/diagnóstico por imagem , Fístula da Bexiga Urinária/cirurgia
19.
Hepatology ; 70(2): 630-639, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-30218583

RESUMO

Early readmission in patients with decompensated liver cirrhosis leads to an enormous burden on health care use. A retrospective cohort study using the 2013 and 2014 Nationwide Readmission Database (NRD) was conducted. Patients with a diagnoses of cirrhosis and at least one feature of decompensation were included. The primary outcome was to develop a validated risk model for early readmission. Secondary outcomes were to study the 30-day all-cause readmission rate and the most common reasons for readmission. A multivariable logistic regression model was fit to identify predictors of readmissions. Finally, a risk model, the Mumtaz readmission risk score, was developed for prediction of 30-day readmission based on the 2013 NRD and validated on the 2014 NRD. A total of 123,011 patients were included. The 30-day readmission rate was 27%, with 79.6% of patients readmitted with liver-related diagnoses. Age <65 years; Medicare or Medicaid insurance; nonalcoholic etiology of cirrhosis; ≥3 Elixhauser score; presence of hepatic encephalopathy, ascites, variceal bleeding, hepatocellular carcinoma, paracentesis, or hemodialysis; and discharge against medical advice were independent predictors of 30-day readmission. This validated model enabled patients with decompensated cirrhosis to be stratified into groups with low (<20%), medium, (20%-30%), and high (>30%) risk of 30-day readmissions. Conclusion: One third of patients with decompensated cirrhosis are readmitted within 30 days of discharge. The use of a simple risk scoring model with high generalizability, based on demographics, clinical features, and interventions, can bring refinement to the prediction of 30-day readmission in high-risk patients; the Mumtaz readmission risk score highlights the need for targeted interventions in order to decrease rates of readmission within this population.


Assuntos
Cirrose Hepática , Modelos Estatísticos , Readmissão do Paciente/estatística & dados numéricos , Medição de Risco , Adolescente , Adulto , Idoso , Estudos de Coortes , Bases de Dados Factuais , Feminino , Previsões , Humanos , Cirrose Hepática/epidemiologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos , Fatores de Tempo , Adulto Jovem
20.
Int J Surg Case Rep ; 53: 13-16, 2018.
Artigo em Inglês | MEDLINE | ID: mdl-30366170

RESUMO

INTRODUCTION: En bloc liver-kidney transplantation can be difficult with renal artery variations for which the risk of multiple anastomoses can outweigh the benefits. PRESENTATION OF CASE: This report is the first to describe an en bloc liver-kidney transplantation using a donor kidney with double renal arteries. The indication for a combined liver-kidney transplant was non-alcoholic steatohepatitis (NASH) cirrhosis with chronic kidney disease secondary to hypertension and diabetes compounded by hepato-renal syndrome. The explant pathology was consistent with steatohepatitis, but did have PAS/D-positive intracytoplastic globules which suggest an additional component of alpha-1-antitrypsin deficiency. DISCUSSION: Diminished arterial inflow to the inferior renal pole was noted intraoperatively, requiring re-anastomosis of the inferior renal polar artery to the donor left gastric artery. The post-operative course was uncomplicated with patient discharge on post-operative day six. CONCLUSION: With increasing numbers of simultaneous liver-kidney transplants being performed, kidneys with multiple renal arteries can successfully be transplanted en-bloc without compromising ischemia time.

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