RESUMO
This randomized, prospective, multicenter trial compared the safety and efficacy of steroid-free immunosuppression (IS) to the safety and efficacy of 2 standard IS regimens in patients undergoing transplantation for hepatitis C virus (HCV) infection. The outcome measures were acute cellular rejection (ACR), severe HCV recurrence, and survival. The patients were randomized (1:1:2) to tacrolimus (TAC) and corticosteroids (arm 1; n = 77), mycophenolate mofetil (MMF), TAC, and corticosteroids (arm 2; n = 72), or MMF, TAC, and daclizumab induction with no corticosteroids (arm 3; n = 146). In all, 295 HCV RNA-positive subjects were enrolled. At 2 years, there were no differences in ACR, HCV recurrence (biochemical evidence), patient survival, or graft survival rates. The side effects of IS did not differ, although there was a trend toward less diabetes in the steroid-free group. Liver biopsy samples revealed no significant differences in the proportions of patients in arms 1, 2, and 3 with advanced HCV recurrence (ie, an inflammation grade ≥ 3 and/or a fibrosis stage ≥ 2) in years 1 (48.2%, 50.4%, and 43.0%, respectively) and 2 (69.5%, 75.9%, and 68.1%, respectively). Although we have found that steroid-free IS is safe and effective for liver transplant recipients with chronic HCV, steroid sparing has no clear advantage in comparison with traditional IS.
Assuntos
Corticosteroides/uso terapêutico , Anticorpos Monoclonais Humanizados/uso terapêutico , Hepatite C Crônica/complicações , Imunoglobulina G/uso terapêutico , Imunossupressores/uso terapêutico , Falência Hepática/cirurgia , Transplante de Fígado/imunologia , Ácido Micofenólico/análogos & derivados , Tacrolimo/uso terapêutico , Corticosteroides/efeitos adversos , Anticorpos Monoclonais Humanizados/efeitos adversos , Antivirais/uso terapêutico , Biópsia , Distribuição de Qui-Quadrado , Daclizumabe , Quimioterapia Combinada , Feminino , Rejeição de Enxerto/imunologia , Rejeição de Enxerto/prevenção & controle , Hepacivirus/genética , Hepatite C Crônica/diagnóstico , Hepatite C Crônica/tratamento farmacológico , Hepatite C Crônica/mortalidade , Humanos , Imunoglobulina G/efeitos adversos , Imunossupressores/efeitos adversos , Estimativa de Kaplan-Meier , Falência Hepática/diagnóstico , Falência Hepática/mortalidade , Falência Hepática/virologia , Transplante de Fígado/mortalidade , Masculino , Pessoa de Meia-Idade , Ácido Micofenólico/efeitos adversos , Ácido Micofenólico/uso terapêutico , Modelos de Riscos Proporcionais , Estudos Prospectivos , RNA Viral/sangue , Recidiva , Medição de Risco , Fatores de Risco , Taxa de Sobrevida , Tacrolimo/efeitos adversos , Fatores de Tempo , Resultado do Tratamento , Estados UnidosRESUMO
PVT or PVS and HVOO are known causes of graft and patient loss after pediatric liver transplantation. Increased incidences of these complications have been reported in partial livers including DDSLT or LDLT. From 1997 to 2008, 241 consecutive pediatric patients received 271 hepatic grafts at a single center. Median follow-up is 1856 days. Surgical technique, demographics, lab values, and radiologic imaging procedures were obtained utilizing OTTR to evaluate the relationship of portal and hepatic complications with risk factors, patient and graft survival. Grafts were composed of 115/271 (42.4%) partial livers of which 90 (33.2%) were DDSLT and 25 (9.2%) LDLT. Of 271 patients, 156 (57.6%) received whole-sized grafts. There were six PVC in five patients with one patient requiring retransplantation (0.34%) and no patient deaths. Utilizing all three hepatic vein orifices on the recipient hepatic vena cava and the donor hepatic vein cut short enables a wide hepatic outflow tract unlikely to twist. None of the 241 patients developed early or late complications of the hepatic vein. None of the last 128 consecutive patients who received 144 grafts over seven and a half yr have developed either early or late complications of the hepatic or portal vein. Partial-graft actuarial survival was similar to whole-graft survival (87.2% vs. 85.3% at one yr; 76.6% vs. 80.2 at three yr; p = 0.488). Likewise, patient survival was similar between partial grafts and whole grafts (93.8% vs. 93.1% at one yr; 89.8% vs. 87.2% at three yr; p = 0.688) with median follow-up of 1822 (+/-1334) days. Patients receiving partial livers were significantly younger and smaller than patients receiving whole livers (p < 0.001). Portal and hepatic venous complications may have negative effects on patient or graft survival after pediatric liver transplantation. In our series, there was one graft and no patient loss related to portal or hepatic venous complications after pediatric liver transplantation over 12 yr.
Assuntos
Síndrome de Budd-Chiari/epidemiologia , Doença Hepática Terminal/cirurgia , Transplante de Fígado/efeitos adversos , Veia Porta , Trombose Venosa/epidemiologia , Adolescente , Anastomose Cirúrgica , Atresia Biliar/cirurgia , Criança , Pré-Escolar , Constrição Patológica , Feminino , Sobrevivência de Enxerto , Veias Hepáticas/cirurgia , Humanos , Transplante de Fígado/métodos , Transplante de Fígado/mortalidade , Masculino , Veia Porta/patologia , Complicações Pós-Operatórias/epidemiologia , Reoperação , Análise de Sobrevida , Resultado do TratamentoRESUMO
Liver retransplantation is routinely offered at our institution. Previous reports document that patient and graft survival is significantly less after pediatric rLT compared to primary LT. This has engendered intense debate regarding optimal allocation of organs. Here, we examine our program's approach to pediatric hepatic retransplantation related to patient factors affecting outcomes. Between 1997 and 2009, 272 LTs were performed in 234 patients (mean survival 1994 +/- 1367 days) at our center. Thirty-four patients required rLT including 10 who received their primary transplant elsewhere and four who required two retransplantations. Patient survival did not differ significantly between rLT and LT at one and three yr (p = 0.56). Graft survival between rLT and LT was also similar (p = 0.606) at one and three yr. No significant difference in graft or patient survival was noted between: Patients retransplanted <30 days after LT vs. those >30 days (p = 0.152); patients transplanted with technical variants vs. whole grafts (p = 0.966); technical variants utilized for LT vs. rLT (p = 0.713); rLT recipient age (< or >5 yr; p = 0.298); or ABOI for rLT and LT (p = 0.650). Retransplantation should be offered to optimize pediatric recipient survival after LT and offers similar survival as primary transplant.
Assuntos
Transplante de Fígado , Avaliação de Resultados em Cuidados de Saúde , Adolescente , Distribuição de Qui-Quadrado , Criança , Pré-Escolar , Feminino , Georgia/epidemiologia , Rejeição de Enxerto , Sobrevivência de Enxerto , Humanos , Lactente , Testes de Função Hepática , Masculino , Complicações Pós-Operatórias/epidemiologia , Reoperação/estatística & dados numéricos , Fatores de Risco , Análise de SobrevidaRESUMO
Children transplanted for ALF urgently require an optimal graft and have lower post-transplant survival compared with children transplanted for chronic liver disease. Over 10 yr, 33 consecutive children transplanted for ALF were followed. Demographics, encephalopathy, intubation, dialysis, laboratory values, graft type ABOI, XL (GRWR > 5%), DDSLT, LDLT and WLT were evaluated. Complications and survival were determined. ALF accounted for 33/201 (16.4%) of transplants during this period. Twelve of 33 received ABOI, five XL grafts, 18 DDSLT, and three LDLT. Waiting time pretransplant was 2.1 days. One- and three-yr patient survival in the ALF group was 93.4% and 88.9%, and graft survivals were 86.4% and 77.7%. Median follow-up was 1452 days. ABOI one- and three yr patient and graft survival in the ALF was 91.6% and 78.6%. No difference in graft or patient survival was noted in the ALF and chronic liver disease group or the ABOI and the ABO compatible group. A combination of ABO incompatible donor livers, XL grafts, DDSLT, LDLT and WLT led to a short wait time and subsequent graft and patient survival comparable to patients with non-acute disease.
Assuntos
Falência Hepática Aguda/cirurgia , Transplante de Fígado/mortalidade , Adolescente , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Recém-Nascido , Falência Hepática Aguda/mortalidade , Transplante de Fígado/estatística & dados numéricos , Masculino , Análise de Sobrevida , Doadores de Tecidos/provisão & distribuiçãoRESUMO
PH1 is a metabolic disorder characterized by urolithiasis and the accumulation of oxalate crystals in the kidneys and other organs. Although patients often first present with renal failure, PH1 results from a deficiency of the hepatic peroxisomal enzyme AGT. Ultimately only liver transplantation will cure the underlying metabolic defect. Herein, we report the case of a three-month-old male infant diagnosed with PH and treated using a combined liver and en bloc-kidney transplant from a single donor. At the time of transplant, the patient was 11 months old and weighed 7.9 kg. He received a full size liver graft and en bloc kidneys from a two-yr-old donor. At 36 months post-transplant, the patient is steadily growing with normal renal and hepatic function. This is one of the first reports of successful liver and en bloc-kidney transplantation with abdominal compartment expansion by PTFE for the infantile form of PH1 in a high risk child before one yr of age. Prompt diagnosis and early referral to a specialized center for liver and kidney replacement offer the best chance for survival for infants with this otherwise fatal disease.
Assuntos
Hiperoxalúria Primária/cirurgia , Hiperoxalúria Primária/terapia , Transplante de Rim/métodos , Transplante de Fígado/métodos , Sobrevivência de Enxerto , Humanos , Lactente , Falência Renal Crônica/terapia , Hepatopatias/terapia , Masculino , Modelos Anatômicos , Resultado do TratamentoRESUMO
BACKGROUND: Recurrent disease after liver transplant is a significant problem. Recurrent primary biliary cirrhosis (RPBC) is a histologic diagnosis. Clinical data is unreliable in predicting or diagnosing recurrence. RPBC appears to have a changing clinical presentation in recent years. MATERIALS AND METHODS: The diagnosis of RPBC after liver transplantation was made histologically. Data were obtained from our prospectively maintained liver-transplant database and evaluated statistically. RESULTS: Between 1985 and 1999, 1,835 liver transplants were performed, 169 for PBC. One hundred fifty-six patients were evaluated (one patient received retransplantation, and 13 were excluded). Seventeen (10.9%) experienced recurrence. Median posttransplantation follow-up time was 72.1 months. Median time to recurrence was 49.6 months. Median follow-up time after recurrence was 11.5 months. Neither acute rejection episodes (P=0.34) nor OKT3 use (P=0.36) before diagnosis of recurrence was significant. The combination of cyclosporine, azathioprine, and prednisolone demonstrated recurrence in 6 of 71 (8.4%). Six of 49 (12.2%) patients treated with cyclosporine with or without mycophenolate mofetil and prednisolone experienced recurrence. Six of 36 (16.7%) patients treated with tacrolimus and prednisolone with or without mycophenolate mofetil experienced recurrence. Patients treated with cyclosporine had numerically fewer recurrences than those treated with tacrolimus (P=0.11). CONCLUSIONS: Patients with RPBC demonstrated prolonged survival. Clinical factors did not aid in predicting RPBC. The clinical course of RPBC appears to be different than in the earlier years of liver transplantation. Immunosuppression may play a role. The use and type of antimetabolite drugs had no affect on recurrence. RPBC demonstrated a different clinical course with tacrolimus treatment (shorter time to recurrence) and increased incidence when compared with cyclosporine treatment. Controlled randomized studies are necessary to determine differences between tacrolimus and cyclosporine treatment, if any.
Assuntos
Cirrose Hepática Biliar/epidemiologia , Cirrose Hepática Biliar/patologia , Transplante de Fígado/estatística & dados numéricos , Quimioterapia Combinada , Seguimentos , Rejeição de Enxerto/epidemiologia , Antígenos HLA/análise , Teste de Histocompatibilidade/métodos , Humanos , Imunossupressores/uso terapêutico , Isoanticorpos/sangue , Transplante de Fígado/imunologia , Transplante de Fígado/mortalidade , Complexo Principal de Histocompatibilidade , Seleção de Pacientes , Valor Preditivo dos Testes , Recidiva , Reoperação , Estudos Retrospectivos , Análise de Sobrevida , Fatores de TempoRESUMO
PURPOSE: The incidence of ulcerated, bleeding, autologous, hemodialysis fistulas has been felt to be increasing in recent years. This review was undertaken to examine our experience with patients who presented with episodes of spontaneous bleeding in the presence of an ulcerated lesion over their autologous dialysis accesses. METHODS: A database of hemodialysis access procedures was reviewed for individuals with spontaneous bleeding from ulcerations. Twenty-four patients were identified with 28 ulcerating lesions over a ten-year period from 2001 to 2011. Each had at least a single episode of spontaneous bleeding. Treatment methods were reviewed including five techniques of surgical intervention. RESULTS: Two of 24 patients expired from major hemorrhagic events before obtaining surgical consultation (8.3%). Twenty-one patients (87.5%) underwent 28 surgical procedures for correction of the ulcers. One patient (4.1%) with simultaneous ulcers healed under antibiotic therapy during close observation in hospital. Simple suturing of the ulcer was found to be inconsistent in effectively maintaining hemostasis. Surgical excision of the ulcer with primary closure, vein patching of the fistula, or end-end anastomosis were equally effective in definitively correcting the problem. CONCLUSIONS: The ulcerated autologous dialysis fistula is a life-threatening lesion and requires prompt surgical intervention to reduce mortality. The frequency of this problem appears to be increasing. Simple suturing of the ulcers was not consistently effective in remedying the problem and should be utilized as a temporizing measure until surgical correction can be undertaken. Fistulas can be uniformly salvaged with surgical intervention enabling uninterrupted dialysis treatments.
Assuntos
Derivação Arteriovenosa Cirúrgica/efeitos adversos , Hemorragia/cirurgia , Diálise Renal , Terapia de Salvação , Úlcera/cirurgia , Extremidade Superior/irrigação sanguínea , Adulto , Idoso , Idoso de 80 Anos ou mais , Angioplastia , Antibacterianos/uso terapêutico , Feminino , Hemorragia/etiologia , Humanos , Masculino , Pessoa de Meia-Idade , Reoperação , Retalhos Cirúrgicos , Técnicas de Sutura , Texas , Fatores de Tempo , Úlcera/etiologia , Veias/transplanteRESUMO
The unusual development of massive ascites, 3 years after renal transplant, caused by undefined, innate renal allograft pathology is described. Challenges of surgical correction of this problem, allowing for salvage of the allograft, are reviewed.
Assuntos
Ascite/cirurgia , Nefropatias Diabéticas/cirurgia , Nefropatias/cirurgia , Transplante de Rim/efeitos adversos , Ascite/diagnóstico , Ascite/etiologia , Diabetes Mellitus Tipo 1/complicações , Nefropatias Diabéticas/etiologia , Feminino , Humanos , Nefropatias/diagnóstico , Nefropatias/etiologia , Reoperação , Terapia de Salvação , Fatores de Tempo , Resultado do Tratamento , Adulto JovemRESUMO
BACKGROUND: The most frequent reason for orthotopic liver transplantation (OLT) in the United States is due to complications of hepatitis C (HCV). Recent reports have shown decreased survival for HCV after OLT. Of note, the use of interferon (IFN) products has become wide spread with the majority of HCV patients being treated before transplant. AIM: To review the outcomes of HCV patients who have received IFN products before liver transplant compared with HCV patients those who have never received IFN. METHOD: Single-center, retrospective review of patients transplanted for HCV since December 1998 (n=131). Primary endpoint is the effect of IFN exposure before transplant on posttransplant outcomes. RESULTS: Patients receiving before transplant (pre-IFN group; n=45) had a more aggressive recurrence of HCV with earlier recurrence (181.1+/-236 days vs. 303.4+/- 327 days; P=0.031), frequency of recurrence [41/45 (91.1%) vs. 62/86 (72.1%); P=0.013], and 1-year recurrence free survival [20% (+/-0.06) vs. 48.2% (+/-0.05); P=0.005]. Survival difference was noted in the pre-IFN group at 1 year and 3 years [79.7% (+/-0.06) vs. 90.5% (+/-0.03); 65.7 (+/-0.08) vs. 75.9% (+/-0.05); P=0.05] when compared with patients not receiving IFN (n=86) before transplant. CONCLUSIONS: Based on this study, interferon use before transplant for the HCV patient indicates poor outcomes After OLT. Because of the increasing numbers of HCV patients coming to transplant, validation of these results should be of utmost importance.
Assuntos
Hepatite C/tratamento farmacológico , Hepatite C/cirurgia , Interferons/uso terapêutico , Transplante de Fígado/fisiologia , Adulto , Anticorpos Monoclonais/uso terapêutico , Anticorpos Monoclonais Humanizados , Daclizumabe , Intervalo Livre de Doença , Feminino , Hepatite C Crônica/tratamento farmacológico , Hepatite C Crônica/cirurgia , Humanos , Imunoglobulina G/uso terapêutico , Imunossupressores/uso terapêutico , Transplante de Fígado/mortalidade , Masculino , Pessoa de Meia-Idade , Grupos Raciais/estatística & dados numéricos , Recidiva , Estudos Retrospectivos , Análise de Sobrevida , Resultado do TratamentoRESUMO
Hepatopulmonary syndrome (HPS) is a triad of liver dysfunction, hypoxemia, and intrapulmonary vascular dilatation. We describe the prevalence and clinical features of HPS at a pediatric liver transplant center. Patients referred to Children's Healthcare of Atlanta/Emory University transplant program from February 1999 to May 2005 were reviewed. Oxygen saturation in room air was screened by percutaneous pulse oximetry. HPS cases were compared with similar age non-HPS recipients (n = 38) to determine differences in clinical characteristics, Pediatric End-Stage Liver Disease (PELD) scores, and posttransplantation survival. Of 211 patients referred and 114 patients transplanted, 7 met criteria for HPS (3.3% and 6.1%, respectively). Patients with HPS had lower PELD score (-0.4 +/- 5.9 vs. 11 +/- 11; P = 0.01) and total bilirubin (1.7 +/- 1.1 vs. 11.2 +/- 10.1; P = 0.02) at the time of transplantation. Four of 7 patients with HPS had polysplenia/interrupted inferior vena cava (PS/IVC) compared with 0 of 38 age-matched controls (P = 0.0002). Three patients with HPS did not have cirrhosis; 2 of these 3 had PS/IVC. All HPS cases normalized room air oxygen saturation by 6 months, and survival after transplantation in HPS cases was 100%. Marked hepatic synthetic or biochemical dysfunction may not be present, and cirrhosis is not a requirement for the development of HPS in children. HPS in children is frequently associated with PS/IVC. Histologic evidence of abnormal intrahepatic portal vein flow and the demonstration of portosystemic communications at any level should be sought in children presenting with unexplained intrapulmonary vascular dilatation. Liver transplantation for HPS in childhood may be appropriate even in the absence of cirrhosis.
Assuntos
Anormalidades Múltiplas , Síndrome Hepatopulmonar/complicações , Síndrome Hepatopulmonar/cirurgia , Transplante de Fígado , Baço/anormalidades , Veia Cava Inferior/anormalidades , Adolescente , Criança , Feminino , Síndrome Hepatopulmonar/epidemiologia , Síndrome Hepatopulmonar/fisiopatologia , Humanos , Cirrose Hepática/complicações , Transplante de Fígado/estatística & dados numéricos , Masculino , Prevalência , Análise de Sobrevida , SíndromeRESUMO
We present a case report of a cytomegalovirus (CMV)-seronegative, 58-year-old male who received a CMV-seropositive donor liver transplant without CMV prophylaxis. On postoperative day 30, the patient developed primary CMV disease that responded to ganciclovir. On postoperative day 114, however, he was diagnosed with recurrent CMV infection. Despite aggressive, combined antiviral treatment with ganciclovir and foscarnet and reduction of immunosuppression, viral clearance was never achieved. Serum samples were collected throughout the infectious process for viral DNA analysis. Portions of the UL97 and UL54 genes were amplified and compared to the AD169 wild-type strain. Sequencing studies revealed the presence of mutations in viral isolates obtained after clinical resistance was observed. These mutations were not present in samples obtained during the primary CMV infection. Our findings suggest the presence of coinfection with at least 2 different strains of CMV rather than induction of mutations after ganciclovir therapy.
Assuntos
Antivirais/uso terapêutico , Infecções por Citomegalovirus/tratamento farmacológico , Citomegalovirus/genética , Farmacorresistência Viral Múltipla , Foscarnet/uso terapêutico , Ganciclovir/uso terapêutico , Transplante de Fígado/efeitos adversos , Anticorpos Antivirais/análise , Citomegalovirus/imunologia , Infecções por Citomegalovirus/virologia , DNA Viral/genética , Quimioterapia Combinada , Evolução Fatal , Seguimentos , Humanos , Falência Hepática/cirurgia , Masculino , Pessoa de Meia-Idade , Reação em Cadeia da PolimeraseRESUMO
NH is a rare disorder of iron storage in newborns resulting in rapid liver failure. Outcomes are dismal with 20-30% survival. We report our experience in eight children with NH. Assessment of liver function included admission PT and serum levels of FV and FVII. Medical treatment (antioxidant cocktail) was started in all patients, with chelation therapy in six. Of these six, three survived with medical treatment alone. The other three underwent liver transplant. One died 158 days after transplant to sepsis: two are well more than five yr after transplant. The two neonates who did not receive chelation therapy, died to multi-organ failure and sepsis. In summary, five children (62.5%) survived long-term. In the three transplanted, one- and five-yr-survival was 66%. Older children with compromised synthetic liver function (FVII levels < or = 15%) required liver replacement for survival. Early referral to a tertiary care center is essential to increase survival of these children with a rare and otherwise fatal disease. Single center experience of children with NH is here presented. Potentials for survival improvement with of medical and surgical treatment are examined.
Assuntos
Antioxidantes/uso terapêutico , Terapia por Quelação/métodos , Desferroxamina/uso terapêutico , Hemocromatose/terapia , Transplante de Fígado/métodos , Sideróforos/uso terapêutico , Progressão da Doença , Quimioterapia Combinada , Fator VII/metabolismo , Feminino , Seguimentos , Rejeição de Enxerto/diagnóstico , Rejeição de Enxerto/epidemiologia , Rejeição de Enxerto/prevenção & controle , Hemocromatose/sangue , Hemocromatose/complicações , Humanos , Incidência , Lactente , Recém-Nascido , Falência Hepática/epidemiologia , Falência Hepática/etiologia , Falência Hepática/prevenção & controle , Imageamento por Ressonância Magnética , Masculino , Estudos Retrospectivos , Índice de Gravidade de Doença , Taxa de Sobrevida , Fatores de Tempo , Resultado do Tratamento , Estados Unidos/epidemiologiaRESUMO
This work is a 1-yr interim analysis of a prospective, randomized, multicenter trial evaluating the effect of corticosteroid-free immunosuppression on hepatitis C virus-positive (HCV(+)) liver transplant recipients following liver transplantation (LT). Patients received tacrolimus and corticosteroids (Arm 1; n = 80); tacrolimus, corticosteroids, and mycophenolate mofetil (MMF) (Arm 2; n = 79); or daclizumab induction, tacrolimus, and MMF (Arm 3; n = 153). At 1 yr, 64.1%, 63.4%, and 69.4% of patients achieved the composite primary endpoint of freedom from rejection, freedom from HCV recurrence, and freedom from treatment failure, respectively. Excellent patient and graft survival did not differ significantly among treatment arms. Freedom from HCV recurrence at 1 yr was 61.8 +/- 6.2%, 60.1 +/- 6.1%, and 67.0 +/- 4.3% in Arms 1, 2, and 3, respectively (P = not significant). Freedom from rejection was significantly higher in Arm 3 compared to Arm 1 (93.0 +/- 2.2% vs. 81.9 +/- 4.4%; P = 0.011). Multivariate analysis identified acute rejection (hazard ratio = 2.692; P = 0.001) and donor age (hazard ratio = 1.015; P = 0.001) as significant risk factors for HCV recurrence. HCV recurrence was not influenced by recipient demographics, HCV genotype, or immunosuppression. In conclusion, these results suggest that a corticosteroid-free regimen of tacrolimus and MMF following daclizumab induction is safe and effective in HCV(+) liver transplant recipients.
Assuntos
Anticorpos Monoclonais/administração & dosagem , Rejeição de Enxerto/prevenção & controle , Hepacivirus/efeitos dos fármacos , Imunoglobulina G/administração & dosagem , Terapia de Imunossupressão/métodos , Imunossupressores/administração & dosagem , Transplante de Fígado , Corticosteroides/administração & dosagem , Anti-Inflamatórios não Esteroides/administração & dosagem , Anticorpos Monoclonais Humanizados , Daclizumabe , Quimioterapia Combinada , Feminino , Hepatite C/prevenção & controle , Humanos , Fígado/efeitos dos fármacos , Fígado/virologia , Masculino , Pessoa de Meia-Idade , Ácido Micofenólico/administração & dosagem , Ácido Micofenólico/análogos & derivados , Prevenção Secundária , Tacrolimo/administração & dosagem , Resultado do TratamentoRESUMO
Bilateral pulmonary agenesis (PA) is a rare embryological defect incompatible with life. Unilateral PA has a wide range of clinical presentations: its prognosis depends on the presence and severity of other associated anomalies. Fetal biliary atresia has been associated with a number of congenital anomalies, but the etiology is still not understood. An unusual case of a child with right PA, right diaphragmatic hernia, and delayed diagnosed biliary atresia leading to liver failure is presented herein. At the age of 4 months the patient was referred to the Transplant Department at Children Healthcare of Atlanta at Egleston with cholestasis and failure to thrive. With a rapidly progressive liver insufficiency, this child was evaluated for liver transplantation. In the absence of any respiratory symptom, the patient received a deceased donor size-matched left lateral segment liver transplant, which covered the diaphragmatic defect, with no further repair required. Twenty-seven months post-transplant, the patient has good graft function, a normal Z-score and is thriving. In spite of the increased physiological and surgical challenges (absence of right lung tissue, hemi-diaphragm, and ectopic position of the liver in the right chest), liver transplantation was performed with positive outcome in this high-risk child. Whether PA, may have developmentally contributed to expression of biliary atresia will need further investigation.
Assuntos
Atresia Biliar/complicações , Atresia Biliar/cirurgia , Hérnias Diafragmáticas Congênitas , Transplante de Fígado , Pulmão/anormalidades , Feminino , Seguimentos , Sobrevivência de Enxerto , Hérnia Diafragmática/diagnóstico , Hérnia Diafragmática/diagnóstico por imagem , Hérnia Diafragmática/cirurgia , Humanos , Lactente , Radiografia , Fatores de Tempo , Resultado do TratamentoRESUMO
Transplanting blood group A, B, or O (ABO)-incompatible (ABO-I) liver grafts has resulted in lower patient and graft survival with an increased incidence of vascular and biliary complications and rejection. We report that, without modification of our standard immunosuppression protocol, crossing blood groups is an acceptable option for children requiring liver transplantation. In our study, ABO-I liver grafts -- regardless of recipient age -- have comparable long-term survival (mean follow-up of 3.25 yr) with ABO-compatible grafts without any difference in rejection, vascular or biliary complications. From January 1, 1999 to October 1, 2005, we studied 138 liver transplants in 121 children: 16 (13.2%) received an ABO incompatible liver allograft. One-year actuarial patient survival for ABO-matched grafts vs. ABO-I grafts was 93.0% and 100%, respectively, whereas graft survival was 83.4% and 92.3%. Additionally, 6 of 16 (37.5%) ABO-I transplanted children had 8 rejection episodes, whereas 47 patients (44.8%) had 121 rejection episodes in the ABO-compatible group. There were no vascular complications and 2 biliary strictures in the ABO-I group. Plasmapheresis was not used for pretransplantation desensitization and was only required in 1 posttransplantation recipient. No child was splenectomized. Six of the 16 children were older than 13 yr of age, suggesting the possibility of successfully expanding this technique to an older population. In conclusion, our outcomes may support the concept of using ABO-I grafts in a more elective setting associated with split and living donor liver transplants.
Assuntos
Sistema ABO de Grupos Sanguíneos , Incompatibilidade de Grupos Sanguíneos , Terapia de Imunossupressão , Transplante de Fígado , Plasmaferese , Adolescente , Criança , Pré-Escolar , Feminino , Rejeição de Enxerto/imunologia , Rejeição de Enxerto/prevenção & controle , Humanos , Lactente , MasculinoRESUMO
The risk of hepatic artery thrombosis (HAT) after pediatric liver transplantation (PLT) has been reported to range from 0 to 25%. We report our experience focusing on the interrelationships between risk factors, surgical technique and the incidence of HAT after liver transplantation in the pediatric age group. From February 18, 1997 to December 31, 2003, 150 consecutive liver transplants were performed in 132 pediatric patients. There were similar numbers of whole grafts when compared with partial grafts, 80 (53.3%) vs. 70 (46.7%), p = 0.30. Four grafts (2.7%) developed HAT. Of the grafts with HAT, three were successfully revascularized within the first 24 h. Only one graft (0.66%) was lost to HAT. A single surgeon utilizing 3.5-6.0 magnification loupes performed all but one hepatic arterial anastomoses. All patients were followed postoperatively by a daily ultrasound protocol and with anticoagulation of aspirin and alprostadil only. Living and deceased donor left lateral segment grafts had an increased rate of HAT when compared with whole liver grafts. HAT with subsequent graft loss may be minimized in PLT with the use of surgical loupes only, anticoagulation utilizing aspirin, alprostadil, and daily ultrasounds.
Assuntos
Anticoagulantes/administração & dosagem , Artéria Hepática , Transplante de Fígado , Complicações Pós-Operatórias/epidemiologia , Trombose/epidemiologia , Criança , Pré-Escolar , Sobrevivência de Enxerto , Humanos , Incidência , Lactente , Microscopia , Estudos Prospectivos , Fatores de Risco , Trombose/etiologiaRESUMO
Hepatic artery strictures (HASs) may be a source of morbidity and mortality in liver transplant recipients. This study evaluated the potential correlation between intraoperative arterial and venous blood flows measured after implantation of the liver allograft and the occurrence of postoperative HASs requiring repair. Prospectively collected data from 1,038 patients with complete data sets who underwent initial orthotopic liver transplantations between December 1984 and December 1999 were used. Electromagnetic flow measurements were routinely obtained in these cases. Hepatic artery and portal vein patency were reassessed routinely according to our protocol in the first postoperative day by Doppler ultrasound. When considered hemodynamically significant, strictures were corrected. There was a 6.2% incidence (n = 64) of hepatic artery stenosis in our transplant population. When considered as a whole, the hepatic artery stenosis group had lower intraoperative flow volumes than transplant recipients who did not develop strictures (mean flows, 452 v 518 mL/min, respectively; P =.025). The hepatic artery stenosis group also had lower intraoperative portal vein flows compared with the group without hepatic artery stenosis (1.80 v 2.11 L/min, respectively; P =.0043). Strictures were less frequent among transplant recipients with cryptogenic cirrhosis. We did not observe differences among the groups for retransplantation or patient and graft survival. In our series, there was a 6.2% incidence of postoperative HASs. We observed a significant association between intraoperative hepatic artery and portal vein flows and postoperative HASs.
Assuntos
Arteriopatias Oclusivas/epidemiologia , Artéria Hepática , Circulação Hepática/fisiologia , Transplante de Fígado/efeitos adversos , Monitorização Intraoperatória , Velocidade do Fluxo Sanguíneo , Humanos , Transplante de Fígado/fisiologia , Veia Porta , Estudos RetrospectivosRESUMO
HTLV I and II are unusual retroviruses associated with multiple neurologic and hematologic disorders. We observed an unusually high incidence of HTLV I-II seropositivity among young and middle-aged female organ donors, especially among those in the peripartum period. Ethical issues may arise when informing the families as well as when deciding whether to use organs from these donors. Further confirmatory tests may be difficult to obtain because of time and economic constraints associated with organ procurement.
Assuntos
Anticorpos Anti-HTLV-I/sangue , Anticorpos Anti-HTLV-II/sangue , Período Pós-Parto , Doadores de Tecidos , Adulto , Feminino , Humanos , Incidência , Pessoa de Meia-Idade , Gravidez , Estudos Retrospectivos , Estudos Soroepidemiológicos , Obtenção de Tecidos e ÓrgãosRESUMO
The Model for End-Stage Liver Disease (MELD) score is now the criteria for allocation in liver transplantation for patients with chronic disease. Although the score has been effective in the prediction of mortality in patients awaiting liver transplantation, its abilities to predict posttransplantation outcome need study. The aim of this study is to compare outcome in the first 2 years after liver transplantation according to the pretransplantation MELD score. The study includes 669 consecutive patients who underwent primary liver transplantation between December 1993 and October 1999 in a single transplant center. Patients who died of malignancy were excluded from the series. Pretransplantation MELD score was calculated using the United Network for Organ Sharing formula. Patients were stratified according to MELD score less than 15, 15 to 24, and 25 and higher. Posttransplantation survival at 3, 6, 12, 18, and 24 months was significantly lower in the groups with a higher MELD score. The difference was significant for hepatitis C and noncholestatic liver diseases, but not cholestatic diseases. In patients with a MELD score between 15 and 24, survival was significantly greater with cholestatic diseases and lower in patients with hepatitis C. In our study, pretransplantation MELD score correlates with survival in the first 2 years after transplantation. There is a survival advantage for patients with cholestatic diseases compared with those with hepatitis C. These findings suggest the need to readjust MELD score-based allocation decisions to consider patient outcome.
Assuntos
Transplante de Fígado/mortalidade , Adolescente , Adulto , Idoso , Doença Crônica , Feminino , Humanos , Falência Hepática/fisiopatologia , Falência Hepática/cirurgia , Masculino , Pessoa de Meia-Idade , Período Pós-Operatório , Prognóstico , Estudos Prospectivos , Índice de Gravidade de Doença , Análise de Sobrevida , Fatores de TempoRESUMO
The Model of End-Stage Liver Disease (MELD) score, an accurate predictor of mortality in patients awaiting liver transplantation (OLTX), did not predict graft or patient survival in the post-transplant setting. Our aim was to test the model in patients who underwent OLTX for chronic hepatitis C. Two hundred and eighty-seven adult patients who underwent primary OLTX for chronic hepatitis C between December 1993 and September 1999 were studied from a prospectively maintained database. The group was stratified by MELD scores of less than 15, 15-24, and greater than 24. Patient survival, graft survival, and interval liver biopsy pathology were reviewed. Both patient and graft survival at 3, 6, and 12 months were significantly lower in the higher MELD score groups, as was patient survival at 24 months (p-values, 0.01-0.05). The difference in survival between the low, medium, and high MELD score groups increases in time. The survival without bridging fibrosis in the allograft at 1 year post-transplant was significantly lower with higher MELD scores (p = 0.037). The decrease in survival seen in hepatitis C patients with MELD scores greater than 24 raises questions of transplant suitability for these patients. Therapeutic modalities to decrease post-transplant graft injury in these patients should be explored.