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1.
Transpl Immunol ; 84: 102034, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38499048

RESUMEN

BACKGROUND: Although Hispanic patients have high rates of end-stage liver disease and liver cancer, for which liver transplantation (LT) offers the best long-term outcomes, they are less likely to receive LT. Studies of end-stage renal disease patients and kidney transplant candidates have shown that targeted, culturally relevant interventions can increase the likelihood of Hispanic patients receiving kidney transplant. However, similar interventions remain largely unstudied in potential LT candidates. METHODS: Referrals to a single center in Texas with a large Hispanic patient population were compared before (01/2018-12/2019) and after (7/2021-6/2023) the implementation of a targeted outreach program. Patient progress toward LT, reasons for ineligibility, and differences in insurance were examined between the two eras. RESULTS: A greater proportion of Hispanic patients were referred for LT after the implementation of the outreach program (23.2% vs 26.2%, p = 0.004). Comparing the pre-outreach era to the post-outreach era, more Hispanic patients achieved waitlisting status (61 vs 78, respectively) and received a LT (971 vs 82, respectively). However, the proportion of Hispanic patients undergoing LT dropped from 30.2% to 20.3%. In the post-outreach era, half of the Hispanic patients were unable to get LT for financial reasons (112, 50.5%). CONCLUSIONS: A targeted outreach program for Hispanic patients with end-stage liver disease effectively increased the total number of Hispanic LT referrals and recipients. However, many of the patients who were referred were ineligible for LT, most frequently for financial reasons. These results highlight the need for additional research into the most effective ways to ameliorate financial barriers to LT in this high-need community.


Asunto(s)
Hispánicos o Latinos , Trasplante de Hígado , Derivación y Consulta , Humanos , Femenino , Masculino , Persona de Mediana Edad , Texas , Adulto , Listas de Espera , Enfermedad Hepática en Estado Terminal/cirugía , Anciano
2.
Transplant Direct ; 10(4): e1590, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38464428

RESUMEN

Background: The COVID-19 pandemic has led to an increase in SARS-CoV-2-test positive potential organ donors. The benefits of life-saving liver transplantation (LT) must be balanced against the potential risk of donor-derived viral transmission. Although emerging evidence suggests that the use of COVID-19-positive donor organs may be safe, granular series thoroughly evaluating safety are still needed. Results of 29 consecutive LTs from COVID-19-positive donors at a single center are presented here. Methods: A retrospective cohort study of LT recipients between April 2020 and December 2022 was conducted. Differences between recipients of COVID-19-positive (n = 29 total; 25 index, 4 redo) and COVID-19-negative (n = 472 total; 454 index, 18 redo) deceased donor liver grafts were compared. Results: COVID-19-positive donors were significantly younger (P = 0.04) and had lower kidney donor profile indices (P = 0.04) than COVID-19-negative donors. Recipients of COVID-19-positive donor grafts were older (P = 0.04) but otherwise similar to recipients of negative donors. Donor SARS-CoV-2 infection status was not associated with a overall survival of recipients (hazard ratio, 1.11; 95% confidence interval, 0.24-5.04; P = 0.89). There were 3 deaths among recipients of liver grafts from COVID-19-positive donors. No death seemed virally mediated because there was no qualitative association with peri-LT antispike antibody titers, post-LT prophylaxis, or SARS-CoV-2 variants. Conclusions: The utilization of liver grafts from COVID-19-positive donors was not associated with a decreased overall survival of recipients. There was no suggestion of viral transmission from donor to recipient. The results from this large single-center study suggest that COVID-19-positive donors may be used safely to expand the deceased donor pool.

3.
JAC Antimicrob Resist ; 6(1): dlad158, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38213312

RESUMEN

Background: Solid organ transplant (SOT) recipients are at risk of bloodstream infections (BSIs) with MDR organisms (MDROs). Objectives: To describe the epidemiology of BSI in the year after several types of SOT, as well as the prevalence of MDRO infections in this population. Methods: We conducted a single-centre, retrospective study of kidney, liver, heart, and multi-organ transplantation patients. We examined BSIs ≤1 year from SOT and classified MDRO phenotypes for Staphylococcus aureus, enterococci, Enterobacterales, Pseudomonas aeruginosa and Candida spp. We compared BSI characteristics between SOT types and determined risk factors for 90 day mortality. Results: We included 2293 patients [1251 (54.6%) kidney, 663 (28.9%) liver, 219 (9.6%) heart and 160 (7.0%) multi-organ transplant]. Overall, 8.5% of patients developed a BSI. BSIs were most common after multi-organ (23.1%) and liver (11.3%) transplantation (P < 0.001). Among 196 patients with BSI, 323 unique isolates were recovered, 147 (45.5%) of which were MDROs. MDROs were most common after liver transplant (53.4%). The most frequent MDROs were VRE (69.8% of enterococci) and ESBL-producing and carbapenem-resistant Enterobacterales (29.2% and 27.2% of Enterobacterales, respectively). Mortality after BSI was 9.7%; VRE was independently associated with mortality (adjusted OR 6.0, 95% CI 1.7-21.3). Conclusions: BSI incidence after SOT was 8.5%, with a high proportion of MDROs (45.5%), especially after liver transplantation. These data, in conjunction with local antimicrobial resistance patterns and prescribing practices, may help guide empirical antimicrobial selection and stewardship practices after SOT.

4.
Transplant Direct ; 9(5): e1482, 2023 May.
Artículo en Inglés | MEDLINE | ID: mdl-37096152

RESUMEN

Combined liver-lung transplantation is an uncommon, although vital, procedure for patients with simultaneous end-stage lung and liver disease. The utility of lung-liver transplant has been questioned because of initial poor survival outcomes, particularly when compared with liver-alone transplant recipients. Methods: A single-center, retrospective review of the medical records of 19 adult lung-liver transplant recipients was conducted, comparing early recipients (2009-2014) with a recent cohort (2015-2021). Patients were also compared with the center's single lung or liver transplant recipients. Results: Recent lung-liver recipients were older (P = 0.004), had a higher body mass index (P = 0.03), and were less likely to have ascites (P = 0.02), reflecting changes in the etiologies of lung and liver disease. Liver cold ischemia time was longer in the modern cohort (P = 0.004), and patients had a longer posttransplant length of hospitalization (P = 0.048). Overall survival was not statistically different between the 2 eras studied (P = 0.61), although 1-y survival was higher in the more recent group (90.9% versus 62.5%). Overall survival after lung-liver transplant was equivalent to lung-alone recipients and was significantly lower than liver-alone recipients (5-y survival: 52%, 51%, and 75%, respectively). Lung-liver recipient mortality was primarily driven by deaths within 6 mo of transplant due to infection and sepsis. Graft failure was not significantly different (liver: P = 0.06; lung: P = 0.74). Conclusions: The severity of illness in lung-liver recipients combined with the infrequency of the procedure supports its continued use. However, particular attention should be paid to patient selection, immunosuppression, and prophylaxis against infection to ensure proper utilization of scarce donor organs.

5.
Transplantation ; 107(7): 1513-1523, 2023 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-36706077

RESUMEN

BACKGROUND: The need for liver retransplantation (reLT) has increased proportionally with greater numbers of liver transplants (LTs) performed, use of marginal donors, degree of recipient preoperative liver dysfunction, and longer survival after LT. However, outcomes following reLT have been historically regarded as poor. METHODS: To evaluate reLT in modern recipients, we retrospectively examined our single-center experience. Analysis included 1268 patients undergoing single LT and 68 patients undergoing reLT from January 2008 to December 2021. RESULTS: Pre-LT mechanical ventilation, body mass index at LT, donor-recipient ABO incompatibility, early acute rejection, and length of hospitalization were associated with increased risk of needing reLT following index transplant. Overall and graft survival outcomes in the reLT cohort were equivalent to those after single LT. Mortality after reLT was associated with Kidney Donor Profile Index, national organ sharing at reLT, and LT donor death by anoxia and blood urea nitrogen levels. Survival after reLT was independent of the interval between initial LT and reLT, intraoperative packed red blood cell use, cold ischemia time, and preoperative mechanical ventilation, all previously linked to worse outcomes. CONCLUSIONS: These data suggest that reLT is currently a safer option for patients with liver graft failure, with comparable outcomes to primary LT.


Asunto(s)
Hepatopatías , Trasplante de Hígado , Humanos , Reoperación/efectos adversos , Estudios Retrospectivos , Factores de Riesgo , Trasplante de Hígado/efectos adversos , Supervivencia de Injerto
6.
Liver Transpl ; 29(4): 422-430, 2023 04 01.
Artículo en Inglés | MEDLINE | ID: mdl-35976078

RESUMEN

Pretransplantation bariatric surgery in patients with high Model for End-Stage Liver Disease (MELD) score is fraught with risks. Bariatric surgery after liver transplantation (LT) may be complicated by surgical adhesions but could have advantages if performed at the time of transplantation. We investigated a method of brief-interval staging combining LT and sleeve gastrectomy (SG). LT recipients with a body mass index (BMI) > 40 kg/m 2 received an SG during the same hospitalization as the LT (LT/SG), at the same time as a planned brief-interval return to the operating room for biliary anastomosis. Differences in intraoperative attributes of the LT (Stage 1) versus SG (Stage 2) procedures were analyzed using Wilcoxon signed-rank test with significance p < 0.05 and compared with patients with obesity having a two-stage LT without SG. A total of 14 cases {median MELD score 33 (interquartile range [IQR], 18-40)} were compared with 28 controls; 60% were critically ill prior to surgery with mechanical ventilation, vasopressors, or continuous renal replacement therapy. Median interval between procedures was 16.1 (IQR, 12.5-22.7) hours for cases and 12.2 (IQR, 11.1-16.6) hours for controls, p  = 0.27. Median BMI at LT/SG was 47.0 (IQR, 41.7-51.3) kg/m 2 versus 38.1 (IQR, 35.7-39.8) kg/m 2 for controls, p < 0.001. At 1 year, median excess body weight loss was 74.0% (IQR, 46.2%-78.7%) in cases and 15.8% (IQR, -5.4% to 62.6%) in controls, p  = 0.13; total weight loss was 38.1% (IQR, 23.9-42.9) in cases versus 7.7% (IQR, -2.4% to 27.6%) for controls, p  = 0.03. Graft survival at 1 year was 92.9% for cases and 89.3% for controls with similar early postoperative outcomes. This proof-of-concept study revealed that a brief-interval SG during LT is feasible in patients with high MELD and resulted in sustained weight loss at 1 year with similar graft survival. Further studies are needed to determine an optimal strategy.


Asunto(s)
Enfermedad Hepática en Estado Terminal , Derivación Gástrica , Trasplante de Hígado , Obesidad Mórbida , Humanos , Trasplante de Hígado/efectos adversos , Trasplante de Hígado/métodos , Enfermedad Hepática en Estado Terminal/cirugía , Enfermedad Hepática en Estado Terminal/complicaciones , Índice de Severidad de la Enfermedad , Pérdida de Peso , Gastrectomía/efectos adversos , Gastrectomía/métodos , Estudios Retrospectivos , Obesidad Mórbida/cirugía , Obesidad Mórbida/complicaciones , Resultado del Tratamiento
7.
Front Transplant ; 2: 1181770, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38993927

RESUMEN

Background: Liver retransplantation (reLT) has historically had inferior survival relative to primary liver transplant (LT). To improve outcomes after reLT, researchers have identified factors predicting overall (OS) and/or graft survival (GS) after reLT. This systematic review and random effects meta-analysis sought to summarize this literature to elucidate the strongest independent predictors of post-reLT. Methods: A systematic review was conducted to identify manuscripts reporting factors affecting survival in multivariable Cox proportional hazards analyses. Papers with overlapping cohorts were excluded. Results: All 25 included studies were retrospective, and 15 (60%) were single-center studies. Patients on pre-transplant ventilation (HR, 3.11; 95% CI, 1.56-6.20; p = 0.001) and with high serum creatinine (HR, 1.46; 95% CI, 1.15-1.87; p = 0.002) had the highest mortality risk after reLT. Recipient age, Model for End-Stage Liver Disease score, donor age, and cold ischemia time >12 h also conferred a significant risk of post-reLT death (all p < 0.05). Factors affecting GS included donor age and retransplant interval (the time between LT and reLT; both p < 0.05). OS is significantly higher when the retransplant interval is ≤7 days relative to 8-30 days (p = 0.04). Conclusions: The meta-analysis was complicated by papers utilizing non-standardized cut-off values to group variables, which made between-study comparisons difficult. However, it did identify 7 variables that significantly impact survival after reLT, which could stimulate future research into improving post-reLT outcomes.

8.
Pharmacotherapy ; 42(3): 263-267, 2022 03.
Artículo en Inglés | MEDLINE | ID: mdl-35075688

RESUMEN

BACKGROUND: Management of dual antiplatelet therapy (DAPT) in the perioperative setting is challenging, particularly in complex patient populations, such as those with underlying coagulopathy and/or recent percutaneous coronary interventions. METHODS: In this case series, we describe the perioperative use of cangrelor bridge therapy in two patients undergoing liver transplantation after recent coronary drug-eluting stent placement. OUTCOMES: In both patient cases, cangrelor use as a P2Y12 bridge at a dose of 0.75 µg/kg/min was safe and effective. Both patients were successfully switched back to their oral DAPT regimen post-operatively without additive bleeding or thrombotic complications. CONCLUSION: The use of cangrelor as bridge therapy in high-risk perioperative liver transplant patients appears to be a viable option when DAPT is warranted.


Asunto(s)
Stents Liberadores de Fármacos , Trasplante de Hígado , Intervención Coronaria Percutánea , Adenosina Monofosfato/análogos & derivados , Quimioterapia Combinada , Humanos , Intervención Coronaria Percutánea/efectos adversos , Inhibidores de Agregación Plaquetaria , Resultado del Tratamiento
9.
Clin Transplant ; 36(5): e14600, 2022 05.
Artículo en Inglés | MEDLINE | ID: mdl-35083796

RESUMEN

Response to two doses of a nucleoside-modified messenger ribonucleic acid (mRNA) vaccine was evaluated in a large solid-organ transplant program. mRNA COVID-19 vaccine was administered to transplant candidates and recipients who met study inclusion criteria. Qualitative anti-SARS-CoV-2 Spike Total Immunoglobulin (Ig) and IgG-specific assays, and a semi-quantitative test for anti-SARS-CoV-2 Spike protein IgG were measured in 241 (17.2%) transplant candidates and 1163 (82.8%) transplant recipients; 55.2% of whom were non-Hispanic White and 44.8% identified as another race. Transplant recipients were a median (IQR) of 3.2 (1.1, 6.8) years from transplantation. Response differed by transplant status: 96.0% versus 43.2% by the anti-SARS-CoV-2 Total Ig (candidates vs. recipients, respectively), 93.5% versus 11.6% by the anti-SARS-CoV-2 IgG assay, and 91.9% versus 30.1% by anti-spike titers after two doses of vaccine. Multivariable analysis revealed candidates had higher likelihood of response versus recipients (odds ratio [OR], 14.6; 95 %CI 2.19, 98.11; P = .02). A slightly lower response was demonstrated in older patients (OR .96; 95 %CI .94, .99; P = .002), patients taking antimetabolites (OR, .21; 95% CI .08, .51; P = .001). Vaccination prior to transplantation should be encouraged.


Asunto(s)
COVID-19 , Trasplante de Órganos , Anciano , Anticuerpos Antivirales , Vacuna BNT162 , COVID-19/epidemiología , COVID-19/prevención & control , Vacunas contra la COVID-19 , Humanos , Inmunidad Humoral , Inmunoglobulina G , ARN Mensajero , SARS-CoV-2 , Receptores de Trasplantes
10.
Liver Transpl ; : 422-430, 2022 Sep 09.
Artículo en Inglés | MEDLINE | ID: mdl-37160061

RESUMEN

ABSTRACT: Pretransplantation bariatric surgery in patients with high Model for End-Stage Liver Disease (MELD) score is fraught with risks. Bariatric surgery after liver transplantation (LT) may be complicated by surgical adhesions but could have advantages if performed at the time of transplantation. We investigated a method of brief-interval staging combining LT and sleeve gastrectomy (SG). LT recipients with a body mass index (BMI) > 40 kg/m 2 received an SG during the same hospitalization as the LT (LT/SG), at the same time as a planned brief-interval return to the operating room for biliary anastomosis. Differences in intraoperative attributes of the LT (Stage 1) versus SG (Stage 2) procedures were analyzed using Wilcoxon signed-rank test with significance p < 0.05 and compared with patients with obesity having a two-stage LT without SG. A total of 14 cases {median MELD score 33 (interquartile range [IQR], 18-40)} were compared with 28 controls; 60% were critically ill prior to surgery with mechanical ventilation, vasopressors, or continuous renal replacement therapy. Median interval between procedures was 16.1 (IQR, 12.5-22.7) hours for cases and 12.2 (IQR, 11.1-16.6) hours for controls, p  = 0.27. Median BMI at LT/SG was 47.0 (IQR, 41.7-51.3) kg/m 2 versus 38.1 (IQR, 35.7-39.8) kg/m 2 for controls, p < 0.001. At 1 year, median excess body weight loss was 74.0% (IQR, 46.2%-78.7%) in cases and 15.8% (IQR, -5.4% to 62.6%) in controls, p  = 0.13; total weight loss was 38.1% (IQR, 23.9-42.9) in cases versus 7.7% (IQR, -2.4% to 27.6%) for controls, p  = 0.03. Graft survival at 1 year was 92.9% for cases and 89.3% for controls with similar early postoperative outcomes. This proof-of-concept study revealed that a brief-interval SG during LT is feasible in patients with high MELD and resulted in sustained weight loss at 1 year with similar graft survival. Further studies are needed to determine an optimal strategy.

11.
Case Rep Transplant ; 2021: 8667589, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34912585

RESUMEN

Mucormycosis is caused by ubiquitous fungi and encompasses a variety of different opportunistic syndromes in humans that disproportionately affect immunocompromised patients. Mortality has been documented to range between 50 and 100%; however, location of infection greatly dictates likelihood of survival. Treatment of mucormycosis involves aggressive surgical intervention and combination therapy of antifungal agents. In solid organ transplant recipients, immunosuppressive agents used to prevent rejection of the transplanted organ pose additional obstacles in the treatment of invasive fungal infections. We report on 3 high models for end-stage liver disease (MELD-Na) score orthotopic liver transplant (OLT) recipients who all were diagnosed with Rhizopus spp. infections with positive, 1-year outcomes after aggressive, individualized treatment.

12.
Ann Surg ; 274(3): 411-418, 2021 09 01.
Artículo en Inglés | MEDLINE | ID: mdl-34132702

RESUMEN

OBJECTIVE: This study investigated the ability of pre-transplant T-cell clonality to predict sepsis after liver transplant (LT). SUMMARY BACKGROUND DATA: Sepsis is a leading cause of death in LT recipients. Currently, no biomarkers predict sepsis before clinical symptom manifestation. METHODS: Between December 2013 and March 2018, our institution performed 478 LTs. After exclusions (eg, patients with marginal donor livers, autoimmune disorders, nonabdominal multi-organ, and liver retransplantations), 180 consecutive LT were enrolled. T-cell characterization was assessed within 48 hours before LT (immunoSEQ Assay, Adaptive Biotechnologies, Seattle, WA). Sepsis-2 and Sepsis-3 cases, defined by presence of acute infection plus ≥2 SIRS criteria, or clinical documentation of sepsis, were identified by chart review. Receiver-operating characteristic analyses determined optimal T-cell repertoire clonality for predicting post-LT sepsis. Kaplan-Meier and Cox proportional hazard modeling assessed outcome-associated prognostic variables. RESULTS: Patients with baseline T-cell repertoire clonality ≥0.072 were 3.82 (1.25, 11.40; P = 0.02), and 2.40 (1.00, 5.75; P = 0.049) times more likely to develop sepsis 3 and 12 months post-LT, respectively, when compared to recipients with lower (<0.072) clonality. T-cell repertoire clonality was the only predictor of sepsis 3 months post-LT in multivariate analysis (C-Statistic, 0.75). Adequate treatment resulted in equivalent survival rates between both groups: (93.4% vs 96.2%, respectively, P = 0.41) at 12 months post-LT. CONCLUSIONS: T-cell repertoire clonality is a novel biomarker predictor of sepsis before development of clinical symptoms. Early sepsis monitoring and management may reduce post-LT mortality. These findings have implications for developing sepsis-prevention protocols in transplantation and potentially other populations.


Asunto(s)
Hematopoyesis Clonal/inmunología , Trasplante de Hígado , Receptores de Antígenos de Linfocitos T/inmunología , Sepsis/diagnóstico , Anciano , Biomarcadores , Femenino , Humanos , Masculino , Persona de Mediana Edad , Valor Predictivo de las Pruebas , Periodo Preoperatorio , Sepsis/inmunología
13.
Clin Transplant ; 35(6): e14304, 2021 06.
Artículo en Inglés | MEDLINE | ID: mdl-33792971

RESUMEN

BACKGROUND: Careful donor-recipient matching and reduced ischemia times have improved outcomes following donation after circulatory death (DCD) liver transplantation (LT). This study examines a single-center experience with DCD LT including high-acuity and hospitalized recipients. METHODS: DCD LT outcomes were compared to a propensity score-matched (PSM) donation after brain death (DBD) LT cohort (1:4); 32 DCD LT patients and 128 PSM DBD LT patients transplanted from 2008 to 2018 were included. Analyses included Kaplan-Meier estimates and Cox proportional hazards models examining patient and graft survival. RESULTS: Median MELD score in the DCD LT cohort was 22, with median MELD of 27 for DCD LT recipients with decompensated cirrhosis. No difference in mortality or graft loss was found (p < .05) between DCD LT and PSM DBD LT at 3 years post-transplant, nor was DCD an independent risk factor for patient or graft survival. Post-LT severe acute kidney injury was similar in both groups. Ischemic-type biliary lesions (ITBL) occurred in 6.3% (n = 2) of DCD LT recipients, resulting in 1 graft loss and 1 death. CONCLUSION: This study supports that DCD LT outcomes can be similar to DBD LT, with a low rate of ITBL, in a cohort including high-acuity recipients. Strict donor selection criteria, ischemia time minimization, and avoiding futile donor/recipient combinations are essential considerations.


Asunto(s)
Trasplante de Hígado , Obtención de Tejidos y Órganos , Muerte Encefálica , Muerte , Supervivencia de Injerto , Humanos , Puntaje de Propensión , Estudios Retrospectivos , Donantes de Tejidos , Resultado del Tratamiento
14.
Transplantation ; 104(8): 1591-1603, 2020 08.
Artículo en Inglés | MEDLINE | ID: mdl-32732836

RESUMEN

BACKGROUND: Combined liver-kidney transplantation (CLKT) improves survival for liver transplant recipients with renal dysfunction; however, the tenuous perioperative hemodynamic and metabolic milieu in high-acuity CLKT recipients increases delayed graft function and kidney allograft failure. We sought to analyze whether delayed KT through pumping would improve kidney outcomes following CLKT. METHODS: A retrospective analysis (University of California Los Angeles [n = 145], Houston Methodist Hospital [n = 79]) was performed in all adults receiving CLKT at 2 high-volume transplant centers from February 2004 to January 2017, and recipients were analyzed for patient and allograft survival as well as renal outcomes following CLKT. RESULTS: A total of 63 patients (28.1%) underwent delayed implantation of pumped kidneys during CLKT (dCLKT) and 161 patients (71.9%) received early implantation of nonpumped kidneys during CLKT (eCLKT). Most recipients were high-acuity with median biologic model of end-stage liver disease (MELD) score of, 35 for dCLKT and 34 for eCLKT (P = ns). Pretransplant, dCLKT had longer intensive care unit stay, were more often intubated, and had greater vasopressor use. Despite this, dCLKT exhibited improved 1-, 3-, and 5-year patient and kidney survival (P = 0.02) and decreased length of stay (P = 0.001), kidney allograft failure (P = 0.012), and dialysis duration (P = 0.031). This reduced kidney allograft futility (death or continued need for hemodialysis within 3 mo posttransplant) for dCLKT (6.3%) compared with eCLKT (19.9%) (P = 0.013). CONCLUSIONS: Delayed implantation of pumped kidneys is associated with improved patient and renal allograft survival and decreased hospital length of stay despite longer kidney cold ischemia. These data should inform the ethical debate as to the futility of performing CLKT in high-acuity recipients.


Asunto(s)
Enfermedad Hepática en Estado Terminal/cirugía , Rechazo de Injerto/epidemiología , Trasplante de Riñón/efectos adversos , Trasplante de Hígado/efectos adversos , Preservación de Órganos/métodos , Anciano , Aloinjertos/inmunología , Aloinjertos/provisión & distribución , Isquemia Fría/instrumentación , Isquemia Fría/métodos , Isquemia Fría/estadística & datos numéricos , Enfermedad Hepática en Estado Terminal/complicaciones , Estudios de Factibilidad , Femenino , Rechazo de Injerto/inmunología , Rechazo de Injerto/prevención & control , Supervivencia de Injerto/inmunología , Humanos , Riñón/inmunología , Trasplante de Riñón/ética , Trasplante de Riñón/métodos , Trasplante de Riñón/estadística & datos numéricos , Trasplante de Hígado/ética , Trasplante de Hígado/métodos , Trasplante de Hígado/estadística & datos numéricos , Masculino , Inutilidad Médica/ética , Persona de Mediana Edad , Preservación de Órganos/instrumentación , Preservación de Órganos/estadística & datos numéricos , Perfusión/instrumentación , Perfusión/métodos , Perfusión/estadística & datos numéricos , Insuficiencia Renal/etiología , Insuficiencia Renal/cirugía , Estudios Retrospectivos , Factores de Tiempo , Tiempo de Tratamiento/estadística & datos numéricos , Trasplante Homólogo/efectos adversos , Trasplante Homólogo/ética , Trasplante Homólogo/métodos , Resultado del Tratamiento
15.
Case Rep Transplant ; 2020: 7873803, 2020.
Artículo en Inglés | MEDLINE | ID: mdl-32257502

RESUMEN

Herein, we discuss a case of a 39-year-old male with hemophilia B, who developed end-stage liver disease secondary to nonalcoholic steatohepatitis, that underwent orthotopic liver transplantation (OLT) as a curative means for his liver disease and coagulation disorder. Existing case reports have demonstrated favorable outcomes in patients outside of the United States who received continuous infusions of recombinant factor IX replacement in the perioperative setting after liver transplant. Given limitations in the stability of the recombinant factor IX products in the United States, a dosing strategy was comprised of once daily bolus dosing to achieve satisfactory factor IX levels. Within 48 hours of initial surgery, the patient had sustained factor IX levels above 70% of normal and the patient required no further dosing of factor IX products to date. This strategy helped facilitate less frequent dosing as well as achieved targeted factor levels while synthetic function of the transplanted liver recovered.

16.
Am J Transplant ; 18(8): 1947-1953, 2018 08.
Artículo en Inglés | MEDLINE | ID: mdl-29509285

RESUMEN

Blood group B candidates, many of whom represent ethnic minorities, have historically had diminished access to deceased donor kidney transplantation (DDKT). The new national kidney allocation system (KAS) preferentially allocates blood group A2/A2B deceased donor kidneys to B recipients to address this ethnic and blood group disparity. No study has yet examined the impact of KAS on A2 incompatible (A2i) DDKT for blood group B recipients overall or among minorities. A case-control study of adult blood group B DDKT recipients from 2013 to 2017 was performed, as reported to the Scientific Registry of Transplant Recipients. Cases were defined as recipients of A2/A2B kidneys, whereas controls were all remaining recipients of non-A2/A2B kidneys. A2i DDKT trends were compared from the pre-KAS (1/1/2013-12/3/2014) to the post-KAS period (12/4/2014-2/28/2017) using multivariable logistic regression. Post-KAS, there was a 4.9-fold increase in the likelihood of A2i DDKT, compared to the pre-KAS period (odds ratio [OR] 4.92, 95% confidence interval [CI] 3.67-6.60). However, compared to whites, there was no difference in the likelihood of A2i DDKT among minorities post-KAS. Although KAS resulted in increasing A2/A2B→B DDKT, the likelihood of A2i DDKT among minorities, relative to whites, was not improved. Further discussion regarding A2/A2B→B policy revisions aiming to improve DDKT access for minorities is warranted.


Asunto(s)
Incompatibilidad de Grupos Sanguíneos , Implementación de Plan de Salud , Trasplante de Riñón/mortalidad , Grupos Minoritarios/estadística & datos numéricos , Asignación de Recursos/normas , Donantes de Tejidos/provisión & distribución , Listas de Espera/mortalidad , Femenino , Estudios de Seguimiento , Humanos , Isoanticuerpos/inmunología , Masculino , Persona de Mediana Edad , Pronóstico , Tasa de Supervivencia , Obtención de Tejidos y Órganos/tendencias , Receptores de Trasplantes
17.
Lancet Gastroenterol Hepatol ; 3(5): 337-348, 2018 05.
Artículo en Inglés | MEDLINE | ID: mdl-29548617

RESUMEN

BACKGROUND: At present, intrahepatic cholangiocarcinoma is a contraindication for liver transplantation. However, previous studies in this field did not preselect patients on the basis of chemosensitivity or disease trajectory after neoadjuvant therapy. Experience with hilar cholangiocarcinoma has indicated that neoadjuvant therapy followed by liver transplantation in patients without disease progression results in a long-term survival benefit. We aimed to establish the potential efficacy of liver transplantation in patients with biologically responsive intrahepatic cholangiocarcinoma who have had sustained tumour stability or regression with neoadjuvant therapy. METHODS: In this prospective case-series, patients with locally advanced, unresectable intrahepatic cholangiocarcinoma, without extrahepatic disease or vascular involvement, were treated at a single liver transplant centre according to a non-randomised, centre-approved clinical management protocol with neoadjuvant chemotherapy followed by liver transplantation. Neoadjuvant therapy consisted of gemcitabine-based chemotherapy, such as gemcitabine-cisplatin or gemcitabine-capecitabine, with second-line or third-line therapies given per institutional standards. Patients with a minimum of 6 months of radiographic response or stability were listed for liver transplantation. The primary endpoints were overall survival and recurrence-free survival after liver transplantation, assessed with Kaplan-Meier analysis. This report includes interim data from the initial case-series treated under this ongoing clinical management protocol, censored on Dec 1, 2017. FINDINGS: Between Jan 1, 2010, and Dec 1, 2017, 21 patients were referred for evaluation and 12 patients were accepted, of whom six patients have undergone liver transplantation for intrahepatic cholangiocarcinoma. Three patients received livers from extended criteria deceased donors that would otherwise have been discarded, two from domino living donors, and one from a standard criteria liver donor. Median duration from diagnosis to transplantation was 26 months (IQR 17-33) and median follow-up from transplantation was 36 months (29-51). All patients received neoadjuvant chemotherapy while awaiting liver transplantation. Overall survival was 100% (95% CI 100-100) at 1 year, 83·3% (27·3-97·5) at 3 years, and 83·3% (27·3-97·5) at 5 years. Three patients developed recurrent disease at a median of 7·6 months (IQR 5·8-8·6) after transplantation, with 50% (95% CI 11·1-80·4) recurrence-free survival at 1, 3, and 5 years. Adverse events after liver transplantation included one patient with postoperative ileus (grade 3) and one patient with acute kidney injury requiring temporary dialysis (grade 4). INTERPRETATION: Selected patients with locally advanced intrahepatic cholangiocarcinoma who show pre-transplant disease stability on neoadjuvant therapy might benefit from liver transplantation. FUNDING: None.


Asunto(s)
Protocolos de Quimioterapia Combinada Antineoplásica/uso terapéutico , Neoplasias de los Conductos Biliares/tratamiento farmacológico , Neoplasias de los Conductos Biliares/cirugía , Colangiocarcinoma/tratamiento farmacológico , Colangiocarcinoma/cirugía , Trasplante de Hígado , Terapia Neoadyuvante , Adulto , Neoplasias de los Conductos Biliares/diagnóstico por imagen , Neoplasias de los Conductos Biliares/genética , Quimioterapia Adyuvante , Colangiocarcinoma/diagnóstico por imagen , Colangiocarcinoma/genética , Supervivencia sin Enfermedad , Femenino , Estudios de Seguimiento , Humanos , Estimación de Kaplan-Meier , Trasplante de Hígado/efectos adversos , Masculino , Persona de Mediana Edad , Mutación , Complicaciones Posoperatorias , Estudios Prospectivos , Radiografía , Recurrencia
18.
Curr Opin Organ Transplant ; 23(2): 145-150, 2018 04.
Artículo en Inglés | MEDLINE | ID: mdl-29461275

RESUMEN

PURPOSE OF REVIEW: Patients with liver failure and liver-related diseases are often critically ill. Here, we review advances in donor organ management, tools for patient selection and highlight ICU management of liver transplant (LT) recipients. A focused discussion on the impact each of these factors have on critical care management of liver failure patients is presented. RECENT FINDINGS: Artificial liver assist devices to increase donor organ utilization are broadening the potential for transplantation of critically ill patients. Additionally, prognostication tools continue to improve and identify patients salvageable with transplantation despite severely deranged physiology. Most importantly, early recognition of liver failure combined with proactive critical care management reduces the incidence of failure-to-rescue and increases the likelihood of transplantation. SUMMARY: Liver transplantation is often the only hope for cure, and despite the presence of profound physiologic disturbances surgery remains the goal. In this review, we cover topics key in ICU management of LT recipients. A focused discussion on development of artificial liver assist devices to increase donor organs, prognostic scoring systems to define appropriate transplant recipients, critical care management of liver failure physiology, and bridging modalities and supportive measures are presented.


Asunto(s)
Fallo Hepático/cirugía , Trasplante de Hígado , Cuidados Críticos , Enfermedad Crítica , Humanos , Hígado Artificial , Selección de Paciente
19.
Curr Opin Organ Transplant ; 22(4): 336-344, 2017 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-28562417

RESUMEN

PURPOSE OF REVIEW: Strongyloidiasis is a parasitic infection affecting millions of people worldwide. Complications of infection are strongly associated with alcoholism, immunosuppression, and organ transplantation. Delayed diagnosis results in hyperinfection syndrome and disseminated strongyloidiasis leading to mortality rates approaching 80%. Early detection, and prevention of infection and transmission are key to diminish this illness. RECENT FINDINGS: In this review, we cover the basic concepts in immunity, immunosuppression, and disorder necessary for understanding the infectious syndromes associated with Strongyloides stercoralis infection. Focused discussion on donor-derived transmission and recipient risk in solid organ transplantation is presented. Current methodology for diagnosis, screening algorithms, and treatment are also reviewed. SUMMARY: Strongyloidiasis complicated by hyperinfection and dissemination remains associated with a poor outcome. The poor outcome pleads for a high level of suspicion and aggressive treatment in at-risk patients. As the population of transplant patients continues to increase, the risk of infection also increases, compelling us to address this highly fatal infectious complication in solid organ transplantation (SOT). Here we review the pathology, immunology, diagnosis, and treatment of strongyloides infection in the immunosuppressed SOT population.


Asunto(s)
Trasplante de Órganos/efectos adversos , Strongyloides stercoralis/patogenicidad , Estrongiloidiasis/etiología , Animales , Humanos , Trasplante de Órganos/mortalidad , Estrongiloidiasis/mortalidad , Estrongiloidiasis/patología , Análisis de Supervivencia
20.
Expert Rev Med Devices ; 13(1): 1-4, 2016.
Artículo en Inglés | MEDLINE | ID: mdl-26613130

RESUMEN

Liver biology, liver disease and its management present a myriad of challenges to clinicians. Difficulties arise in determining liver functional capacity, which must be effectively measured in a quantitative reproducible manner. Measurement of indocyanine green (ICG) clearance, an exceptional tool that has been used for decades to assess liver function, has traditionally been cumbersome to perform. New technology now allows for rapid and noninvasive determination of ICG clearance making it clinically accessible. This adds ICG clearance measurement to the armamentarium of physiologic monitors that could be routinely used in the evaluation of patients undergoing liver surgery or in the intensive care setting.


Asunto(s)
Cuidados Críticos , Pruebas de Función Hepática/instrumentación , Hígado/fisiología , Hígado/cirugía , Humanos , Trasplante de Hígado , Donantes de Tejidos
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