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1.
Curr Opin Pulm Med ; 30(4): 382-390, 2024 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-38411211

RESUMO

PURPOSE OF REVIEW: Infections in lung transplant recipients remain a major challenge and can affect lung allograft function and cause significant morbidity and mortality. New strategies for the prevention and treatment of infection in lung transplantation have emerged and are reviewed. RECENT FINDINGS: For important vaccine preventable infections (VPIs), guidance has been updated for at risk solid organ transplant (SOT) recipients. However, data on the efficacy of newer vaccines in lung transplant, including the respiratory syncytial virus (RSV) vaccine, are limited. Studies demonstrate improved vaccination rate with Infectious Diseases consultation during pretransplant evaluation. Two new antiviral agents for the treatment and prevention of cytomegalovirus (CMV) in SOT, letermovir and maribavir, are being incorporated into clinical care. CMV-specific cell-mediated immune function assays are more widely available. Antibiotics for the management of multidrug resistant pathogens and Burkholderia cepacia complex have been described in case series and case reports in lung transplant. SUMMARY: Although new vaccines and novel therapies for preventing and treating infections are available, larger studies evaluating efficacy in lung transplant recipients are needed.


Assuntos
Antivirais , Transplante de Pulmão , Humanos , Transplante de Pulmão/efeitos adversos , Antivirais/uso terapêutico , Transplantados , Infecções por Citomegalovirus/prevenção & controle , Infecções por Citomegalovirus/diagnóstico , Antibacterianos/uso terapêutico
2.
Am J Transplant ; 22(9): 2217-2227, 2022 09.
Artigo em Inglês | MEDLINE | ID: mdl-35730252

RESUMO

Coronavirus disease-19 has had a marked impact on the transplant population and processes of care for transplant centers and organ allocation. Several single-center studies have reported successful utilization of deceased donors with positive severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) tests. Our aims were to characterize testing, organ utilization, and transplant outcomes with donor SARS-CoV-2 status in the United States. We used Scientific Registry of Transplant Recipients data from March 12, 2020 to August 31, 2021 including a custom file with SARS-CoV-2 testing data. There were 35 347 donor specimen SARS-CoV-2 tests, 77.5% upper respiratory samples, 94.6% polymerase chain reaction tests, and 1.2% SARS-CoV-2-positive tests. Donor age, gender, history of hypertension, and diabetes were similar by SARS-CoV-2 status, while positive SARS-CoV-2 donors were more likely African-American, Hispanic, and donors after cardiac death (p-values <.01). Recipient demographic characteristics were similar by donor SARS CoV-2 status. Adjusted donor kidney discard (odds ratio = 2.08, 95% confidence interval [CI] 1.66-2.61) was higher for SARS-CoV-2-positive donors while donor liver (odds ratio = 0.44, 95% CI 0.33-0.60) and heart recovery (odds ratio = 0.44, 95% CI 0.31-0.63) were significantly reduced. Overall post-transplant graft survival for kidney, liver, and heart recipients was comparable by donor SARS-CoV-2 status. Cumulatively, there has been significantly lower utilization of SARS-CoV-2 donors with no evidence of reduced recipient graft survival with variations in practice over time.


Assuntos
COVID-19 , Transplante de Fígado , Transplante de Órgãos , Obtenção de Tecidos e Órgãos , COVID-19/epidemiologia , Teste para COVID-19 , Humanos , Doadores Vivos , SARS-CoV-2 , Doadores de Tecidos , Estados Unidos/epidemiologia
3.
Am J Transplant ; 22(12): 2903-2911, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-36176236

RESUMO

Emerging data support the safety of transplantation of extra-pulmonary organs from donors with SARS-CoV-2-detection. Our center offered kidney transplantation (KT) from deceased donors (DD) with SARS-CoV-2 with and without COVID-19 as a cause of death (CoV + COD and CoV+) to consenting candidates. No pre-emptive antiviral therapies were given. We retrospectively compared outcomes to contemporaneous DDKTs with negative SARS-CoV-2 testing (CoVneg). From February 1, 2021 to January 31, 2022, there were 220 adult KTs, including 115 (52%) from 35 CoV+ and 33 CoV + COD donors. Compared to CoVneg and CoV+, CoV + COD were more often DCD (100% vs. 40% and 46%, p < .01) with longer cold ischemia times (25.2 h vs. 22.9 h and 22.2 h, p = .02). At median follow-up of 5.7 months, recipients of CoV+, CoV + COD and CoVneg kidneys had similar rates of delayed graft function (10.3%, 21.8% and 21.9%, p = .16), rejection (5.1%, 0% and 8.5%, p = .07), graft failure (1.7%, 0% and 0%, p = .35), mortality (0.9%, 0% and 3.7%; p = .29), and COVID-19 diagnoses (13.6%, 7.1%, and 15.2%, p = .33). Though follow-up was shorter, CoV + COD was associated with lower but acceptable eGFR on multivariable analysis. KT from DDs at various stages of SARS-CoV-2 infection appears safe and successful. Extended follow-up is required to assess the impact of CoV + COD donors on longer term graft function.


Assuntos
COVID-19 , Transplante de Rim , Obtenção de Tecidos e Órgãos , Adulto , Humanos , Transplante de Rim/efeitos adversos , SARS-CoV-2 , Sobrevivência de Enxerto , Estudos Retrospectivos , COVID-19/epidemiologia , Teste para COVID-19 , Seguimentos , Fatores de Risco , Doadores de Tecidos , Função Retardada do Enxerto/etiologia
4.
Emerg Infect Dis ; 27(12): 3182-3184, 2021 12.
Artigo em Inglês | MEDLINE | ID: mdl-34808079

RESUMO

Phylogenetic analysis of a clinical isolate associated with subclinical Burkholderia pseudomallei infection revealed probable exposure in the British Virgin Islands, where reported infections are limited. Clinicians should consider this geographic distribution when evaluating possible infection among persons with compatible travel history.


Assuntos
Burkholderia pseudomallei , Melioidose , Ilhas Virgens Britânicas , Burkholderia pseudomallei/genética , Humanos , Melioidose/diagnóstico , Melioidose/epidemiologia , Filogenia , Viagem
5.
Am J Transplant ; 21(11): 3743-3749, 2021 11.
Artigo em Inglês | MEDLINE | ID: mdl-34254424

RESUMO

Transplantation of solid organs from donors with active SARS-CoV-2 infection has been advised against due to the possibility of disease transmission to the recipient. However, with the exception of lungs, conclusive data for productive infection of transplantable organs do not exist. While such data are awaited, the organ shortage continues to claim thousands of lives each year. In this setting, we put forth a strategy to transplant otherwise healthy extrapulmonary organs from SARS-CoV-2-infected donors. We transplanted 10 kidneys from five deceased donors with new detection of SARS-CoV-2 RNA during donor evaluation in early 2021. Kidney donor profile index ranged from 3% to 56%. All organs had been turned down by multiple other centers. Without clear signs or symptoms, the veracity of timing of SARS-CoV-2 infection could not be confirmed. With 8-16 weeks of follow-up, outcomes for all 10 patients and allografts have been excellent. All have been free of signs or symptoms of donor-derived SARS-CoV-2 infection. Our findings raise important questions about the nature of SARS-CoV-2 RNA detection in potential organ donors and suggest underutilization of exceptionally good extrapulmonary organs with low risk for disease transmission.


Assuntos
COVID-19 , Transplante de Rim , SARS-CoV-2 , Doadores de Tecidos , Obtenção de Tecidos e Órgãos , Humanos , Rim , RNA Viral/genética
6.
Am J Transplant ; 21(3): 1312-1316, 2021 03.
Artigo em Inglês | MEDLINE | ID: mdl-33017864

RESUMO

SARS-CoV2, first described in December 2019, was declared a pandemic by the World Health Organization in March 2020. Various surgical and medical societies promptly published guidelines, based on expert opinion, on managing patients with COVID-19, with a consensus to postpone elective surgeries and procedures. We describe the case of an orthotopic liver transplantation (OLT) in a young female who presented with acute liver failure secondary to acetaminophen toxicity to manage abdominal pain and in the setting of a positive SARS-CoV2 test. Despite a positive test, she had no respiratory symptoms at time of presentation. The positive test was thought to be residual viral load. The patient had a very favorable outcome, likely related to multiple factors including her young age, lack of respiratory COVID-19 manifestations and plasma exchange peri-operatively. We recommend a full work-up for OLT in COVID-19 patients with uncomplicated disease according to standard of care, with careful interpretation of COVID-19 testing in patients presenting with conditions requiring urgent or emergent surgery as well as repeat testing even a few days after initial testing, as this could alter management.


Assuntos
Acetaminofen/intoxicação , COVID-19/virologia , Overdose de Drogas/complicações , Falência Hepática Aguda/induzido quimicamente , Transplante de Fígado/métodos , Pandemias , SARS-CoV-2/genética , Adulto , Analgésicos não Narcóticos/intoxicação , COVID-19/epidemiologia , Feminino , Humanos , Falência Hepática Aguda/cirurgia , RNA Viral , Resultado do Tratamento , Tratamento Farmacológico da COVID-19
7.
Transpl Infect Dis ; 23(1): e13461, 2021 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-32894607

RESUMO

BACKGROUND: Trimethoprim-sulfamethoxazole (TMP-SMX) is the drug of choice for Pneumocystis jirovecii pneumonia (PJP) prophylaxis and has activity against other opportunistic infections (OIs) after solid organ transplant (SOT). We aimed to describe the incidence, reasons for and outcomes of use of alternative prophylactic agents (APAs) across SOT programs in our high volume centers. METHODS: Solid organ transplant recipients (SOTRs) at our centers from 1/2015-12/2016 were identified. Pharmacy records identified APA (pentamidine, atovaquone, or dapsone) use within 1 year. Records were reviewed for allergies, laboratory values at APA initiation, diagnostic tests for TMP-SMX-preventable OIs, and APA side effects. RESULTS: An APA was initiated in 105/1173 (8.9%) SOTRs. Of these, 51 (48.6%) were because of sulfonamide allergy recorded pre-SOT, mostly rash/hives (58.8%). The remaining 54 (51.4%) had TMP-SMX discontinued post-SOT, mostly for neutropenia (48%) and renal effects (34%). Differences occurred across programs, with kidney transplant never stopping TMP-SMX for renal issues. Of those changed to APAs post-transplant, 19 (35%) were later successfully re-challenged with TMP-SMX. With thresholds in mind, 67 (64%) received an APA unnecessarily, accounting for up to $100 000/y excess cost. Potential TMP-SMX-preventable OIs occurred in 7 (5 Nocardia; 2 PJP). APA side effects occurred in 14/105 (13.3%). CONCLUSIONS: Use of APAs for PJP prophylaxis after SOT is less than previously reported but often unwarranted. Such decisions require scrutiny to avoid TMP-SMX-preventable OIs, cost and important APA side effects. Use of reasonable thresholds for cessation of TMP-SMX and data-driven approaches to re-challenge would substantially reduce APA use.


Assuntos
Transplante de Órgãos , Pneumocystis carinii , Pneumonia por Pneumocystis , Humanos , Estudos Retrospectivos
8.
Ann Plast Surg ; 87(1): 105-106, 2021 07 01.
Artigo em Inglês | MEDLINE | ID: mdl-33661221

RESUMO

ABSTRACT: Recent literature suggests that severe COVID-19 is associated with an exaggerated immune response during viral infection, resulting in cytokine storm. Although elevated plasma interleukin 6 (IL-6) has been reported in severe COVID-19 infections, and treatment with anti-IL-6 (tocilizumab) has demonstrated promising outcomes both domestically and abroad, reports remain limited and therapeutic regimens vary considerably. Furthermore, research pertaining to transplant recipients, COVID-19 infection, and anti-IL-6 therapy remains underdeveloped. Herein, we report the successful treatment of the only reported facial vascularized composite allograft (VCA) recipient who contracted severe COVID-19 and the first reported VCA recipient with COVID-19 infection that received anti-IL-6 immunotherapy resulting in an excellent recovery despite his multiple preexisting and COVID-19-related comorbidities-adult respiratory distress syndrome, acute renal failure requiring hemodialysis, and concomitant sepsis due to extensive drug-resistant bacterial pneumonia upon presentation. To date, he has not demonstrated any anti-IL-6 drug-related adverse effects. This preliminary report also suggests that our immunosuppressed VCA patients can indeed demonstrate a robust cytokine response during COVID-19 infection and may also respond favorably to emerging anticytokine immune therapies. We hope that our experience proves helpful to other centers that might encounter critically ill VCA recipients in the ongoing COVID-19 pandemic and in the years to follow.


Assuntos
COVID-19 , Pandemias , Adulto , Síndrome da Liberação de Citocina , Humanos , Masculino , SARS-CoV-2 , Transplantados
9.
Am J Transplant ; 20(11): 3191-3197, 2020 11.
Artigo em Inglês | MEDLINE | ID: mdl-32476261

RESUMO

There are emerging data depicting the clinical presentation of coronavirus disease 19 (COVID-19) in solid organ transplant recipients but negligible data-driven guidance on clinical management. A biphasic course has been described in some infected with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), beginning with a flu-like illness followed by an intense inflammatory response characterized by elevated c-reactive protein (CRP), interleukin 6 (IL-6), and acute respiratory distress syndrome (ARDS) associated with high mortality. The exuberant and possibly dysregulated immune response has prompted interest in therapeutic agents that target the cytokines involved, particularly IL-6. Tocilizumab is an IL-6 receptor antagonist with a record of use for a variety of rheumatologic conditions and cytokine release syndrome due to chimeric antigen receptor T-cell therapy but experience in solid organ and composite tissue transplant recipients (SOT/CTTRs) with SARS-CoV-2-related ARDS has not been previously reported in detail. We present the clinical course of 5 SOT/CTTRs with SARS-CoV-2-related ARDS that received tocilizumab with favorable short-term outcomes in 4. Responses were characterized by reductions in CRP, discontinuation of vasopressors, improved oxygenation and respiratory mechanics, and variable duration of ventilator support. Four bacterial infections occurred within 2 weeks of tocilizumab administration. We discuss safety concerns and the need for randomized comparative trials to delineate tocilizumab's clinical utility in this population.


Assuntos
Anticorpos Monoclonais Humanizados/uso terapêutico , COVID-19/epidemiologia , Rejeição de Enxerto/prevenção & controle , Transplante de Órgãos/métodos , Pandemias , SARS-CoV-2 , Idoso , Comorbidade , Feminino , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Fatores de Tempo , Transplantados
10.
Transpl Infect Dis ; 22(5): e13351, 2020 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-32500666

RESUMO

Coronavirus disease 2019 (COVID-19), mediated by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), can manifest with flu-like illness and severe pneumonia with acute respiratory distress syndrome (ARDS). Immunocompromised patients merit particular attention as altered host immunity may influence both disease severity and duration of viral shedding as is described with several other ribonucleic acid respiratory viruses. Yet immunocompromised status alone, in the absence of other comorbidities, may not necessarily predict severe illness presentations and poorer clinical outcomes as indicated by recent reports of COVID-19-infected solid organ transplant recipients and people living with human immunodeficiency virus (HIV). Such patients may even be spared the robust inflammatory response that precipitates ARDS associated with COVID-19, complicating the management of iatrogenic immunosuppression in this setting. We present a case of an orthotopic liver transplant recipient with well-controlled HIV who successfully recovered from a mild, flu-like illness attributed to SARS-CoV-2.


Assuntos
Fármacos Anti-HIV/efeitos adversos , COVID-19/diagnóstico , Infecções por HIV/tratamento farmacológico , Transplante de Fígado/efeitos adversos , SARS-CoV-2/imunologia , Adulto , Fármacos Anti-HIV/administração & dosagem , COVID-19/imunologia , COVID-19/virologia , Doença Hepática Induzida por Substâncias e Drogas/etiologia , Doença Hepática Induzida por Substâncias e Drogas/cirurgia , Relação Dose-Resposta a Droga , Quimioterapia Combinada/métodos , Rejeição de Enxerto/imunologia , Rejeição de Enxerto/prevenção & controle , Infecções por HIV/imunologia , Humanos , Hidroxicloroquina/administração & dosagem , Hospedeiro Imunocomprometido , Imunossupressores/administração & dosagem , Imunossupressores/efeitos adversos , Masculino , Prednisona/administração & dosagem , SARS-CoV-2/isolamento & purificação , Resultado do Tratamento , Tratamento Farmacológico da COVID-19
11.
Indian J Crit Care Med ; 24(5): 367-368, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-32728333

RESUMO

AIM: Viral causes of acute respiratory distress syndrome (ARDS) are mostly limited to influenza A; however, adenovirus has been emerging as a cause of fulminant ARDS with a high mortality rate and no consensus on its management. Here we present a series of five patients with confirmed adenovirus infection treated for ARDS at our quaternary referral institution. MATERIALS AND METHODS: All patients were above 18 years old, had confirmed adenovirus infection, and were treated for acute hypoxic respiratory failure requiring mechanical ventilation in our medical intensive care unit (MICU). Demographic and clinical data were collected and analyzed. RESULTS: Among these patients, the median age was 28 years, median BMI 28 kg/m2 median sequential organ failure assessment (SOFA) score 9, and median acute physiology and chronic health evaluation (APACHE) III score 74. All patients received lung-protective mechanical ventilation with high positive end-expiratory pressure and low plateau pressures. Three patients developed severe ARDS, two received prone position ventilation, and one was placed on extracorporeal membrane oxygenation. The median duration of mechanical ventilation, MICU length of stay, and hospital length of stay were 24, 19, and 27 days, respectively. One out of five patients died in our study. CONCLUSION: The mortality rate for adenovirus-associated pneumonia in the literature is estimated to be 40% in those requiring mechanical ventilation. The lower mortality at our institution could be attributed to the use of standardized protocols, which include low tidal volume ventilation, early use of neuromuscular blockade, targeting low plateau pressures, conservative fluid management, and comfort and familiarity with the use of adjunctive and rescue therapies. We recommend testing for adenovirus as part of a routine respiratory viral panel in ARDS patients, and if tested positive, transfer to tertiary or quaternary centers with the experience and rescue modalities needed to manage complicated ARDS patients. HOW TO CITE THIS ARTICLE: Vashisht R, Mirzai S, Koval C, Duggal A. Adenovirus-associated Acute Respiratory Distress Syndrome: Need for a Protocol-based Approach. Indian J Crit Care Med 2020;24(5):367-368.

12.
Am J Transplant ; 19(9): 2631-2639, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-31207123

RESUMO

Bacteriophage therapy (BT) uses bacteriophages to treat pathogenic bacteria and is an emerging strategy against multidrug-resistant (MDR) infections. Experience in solid organ transplant is limited. We describe BT in 3 lung transplant recipients (LTR) with life-threatening MDR infections caused by Pseudomonas aeruginosa (n = 2) and Burkholderia dolosa (n = 1). For each patient, lytic bacteriophages were selected against their bacterial isolates. BT was administered for variable durations under emergency Investigational New Drug applications and with patient informed consent. Safety was assessed using clinical/laboratory parameters and observed clinical improvements described, as appropriate. All patients received concurrent antibiotics. Two ventilator-dependent LTR with large airway complications and refractory MDR P. aeruginosa pneumonia received BT. Both responded clinically and were discharged from the hospital off ventilator support. A third patient had recurrent B. dolosa infection following transplant. Following BT initiation, consolidative opacities improved and ventilator weaning was begun. However, infection relapsed on BT and the patient died. No BT-related adverse events were identified in the 3 cases. BT was well tolerated and associated with clinical improvement in LTRs with MDR bacterial infection not responsive to antibiotics alone. BT may be a viable adjunct to antibiotics for patients with MDR infections.


Assuntos
Infecções Bacterianas/prevenção & controle , Infecções Bacterianas/terapia , Farmacorresistência Bacteriana Múltipla , Pneumopatias/cirurgia , Transplante de Pulmão , Terapia por Fagos/métodos , Adulto , Idoso , Antibacterianos/uso terapêutico , Burkholderia , Feminino , Humanos , Pneumopatias/complicações , Pneumopatias/microbiologia , Transplante de Pulmão/efeitos adversos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias , Pseudomonas aeruginosa , Infecções Respiratórias/microbiologia , Transplantados
13.
Clin Transplant ; 33(9): e13552, 2019 09.
Artigo em Inglês | MEDLINE | ID: mdl-30924952

RESUMO

The Infectious Diseases Community of Practice of the American Society of Transplantation has published evidenced-based guidelines on the prevention and management of infectious complications in SOT recipients since 2004. This updated guideline reviews the epidemiology of ventricular assist device (VAD) infections and provides recommendations for the management and prevention of these infections. Almost one half of those awaiting heart transplantation are supported with VADs. Despite advances in device technologies, VAD infections commonly complicate mechanical circulatory support and remain typified by common components and anatomic locations. These infections have important implications for transplant candidates, most notably increased wait-list mortality. Strategic management of these infections is crucial for successful transplantation. Coincidentally, explantation of all VAD components at the time of transplantation is often the definitive cure for the device-associated infection. Highlighted in this updated guideline is the reported success of transplantation in patients with a variety of pre-existing VAD infections and guidance on post-transplant management strategies.


Assuntos
Anti-Infecciosos/uso terapêutico , Coração Auxiliar/efeitos adversos , Transplante de Órgãos/efeitos adversos , Guias de Prática Clínica como Assunto/normas , Infecções Relacionadas à Prótese/diagnóstico , Infecções Relacionadas à Prótese/tratamento farmacológico , Humanos , Infecções Relacionadas à Prótese/etiologia , Sociedades Médicas , Transplantados
14.
Transpl Infect Dis ; 21(5): e13160, 2019 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-31419347

RESUMO

Immunization rates in pre-liver transplant patients have been historically below rates for immunocompetent patients. At Cleveland Clinic, an infectious diseases (ID) consult is required for all patients during the liver transplant evaluation and may beneficially impact vaccination rates. The goal of this study was to evaluate pre-transplant vaccination rates in pre-liver transplant candidates. This single-center, retrospective chart review included adults transplanted between January 1, 2013, and December 31, 2016. Prior to transplant, rates of vaccination and/or documented seropositivity were 35% for hepatitis B vaccine, 92% for hepatitis A vaccine, 57% for pneumococcal conjugate vaccine, 62% for pneumococcal polysaccharide vaccine, and 77% for influenza vaccine. Vaccination rates were higher than to previously reported. Rates were also higher for several vaccines compared to transplant candidates for other organs without ID consult. With ongoing ID consult requirements for liver transplant candidates, combined with standardization of vaccine recommendations via technology, and increased multi-disciplinary collaboration, vaccination rates should improve further.


Assuntos
Transplante de Fígado , Transplantados , Vacinação/estatística & dados numéricos , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Encaminhamento e Consulta , Estudos Retrospectivos , Vacinas/administração & dosagem
16.
Curr Opin Organ Transplant ; 23(4): 400-406, 2018 08.
Artigo em Inglês | MEDLINE | ID: mdl-29979263

RESUMO

PURPOSE OF REVIEW: VAD infections remain a frequent complication of VAD care and can markedly affect patient management before and after transplantation. This review highlights the standard-of-care approaches offered by recent guidelines as well as published data that may improve the care for patients with these challenging and often persistent infections. RECENT FINDINGS: Prevention and management of VAD infections has become more standardized with updated consensus guidelines published in 2017. Unfortunately, advanced devices have not markedly affected the incidence of VAD infection. Efforts to improve, yet streamline, the prevention of VAD-specific infections are ongoing. However, the data provided in the best of recent publications are rarely effectively comparative. Granular data on management strategies are limited to a few studies. Nevertheless, several publications provide more detailed posttransplant outcomes for patients with pretransplant VAD infections and demonstrate overall excellent posttransplant survival. SUMMARY: Prevention and management of VAD-specific and VAD-related infections are the ongoing work of all VAD programs. Consensus guidelines are a marker of progress for this field. Despite very good posttransplant outcomes for these patients, more granular data are required to understand how such patients arrive successfully to transplantation and how their posttransplant course is affected.


Assuntos
Transplante de Coração/métodos , Coração Auxiliar/microbiologia , Infecções Relacionadas à Prótese/tratamento farmacológico , Infecções Relacionadas à Prótese/prevenção & controle , Antibacterianos/administração & dosagem , Antibioticoprofilaxia , Humanos , Cuidados Pré-Operatórios/métodos , Infecções Relacionadas à Prótese/microbiologia , Estudos Retrospectivos
17.
Med Mycol ; 55(3): 278-284, 2017 Apr 01.
Artigo em Inglês | MEDLINE | ID: mdl-27601609

RESUMO

Characteristics of cirrhosis-associated cryptococcosis first diagnosed after death are not fully known. In a multicenter study, data generated as standard of care was systematically collected in 113 consecutive patients with cirrhosis and cryptococcosis followed for 80 patient-years. The diagnosis of cryptococcosis was first established after death in 15.9% (18/113) of the patients. Compared to cases diagnosed while alive, these patients had higher MELD score (33 vs. 22, P = .029) and higher rate of cryptococcemia (75.0% vs. 41.9%, P = .027). Cases diagnosed after death, in comparison to those diagnosed during life were more likely to present with shock (OR 3.42, 95% CI 1.18-9.90, P = .023), require mechanical ventilation at admission (OR 8.5, 95% CI 2.74-26.38, P = .001), less likely to undergo testing for serum cryptococcal antigen (OR 0.07, 95% CI 0.02-0.21, P < .001) and have positive antigen when the test was performed (OR 0.07, 95% CI 0.01-0.60, P = .016). In a subset of cirrhotic patients with advanced liver disease cryptococcosis was first recognized after death. These patients had the characteristics of presenting with fulminant fungemia, were less likely to have positive serum cryptococcal antigen and posed a diagnostic challenge for care providers.


Assuntos
Criptococose/patologia , Fungemia/patologia , Cirrose Hepática/complicações , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Índice de Gravidade de Doença
18.
Transpl Infect Dis ; 19(2)2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28054734

RESUMO

BACKGROUND: Respiratory syncytial virus (RSV) may cause fatal lower respiratory tract infection (LRTI) in immunocompromised patients. Ribavirin with or without standard intravenous immunoglobulin (IVIG) is frequently given although efficacy is debated. Infusion of IVIG with high levels of neutralizing antibody against RSV may offer benefit in these patients. METHODS: RI-001 contains standardized levels of high-titer anti-RSV neutralizing antibody and was provided for compassionate use to 15 patients with RSV LRTI who either failed conventional therapy or had significant risk of progression. Patients were treated on day 1 with RI-001 1500 mg/kg, followed 2 days later with 750 mg/kg. Pre- and post-infusion sera were measured for RSV neutralizing antibody. Patient data were analyzed for safety related to infusion of RI-001, and clinical outcomes. RESULTS: Patients ranged in age from 2 months to 71 years and 80% had hematologic malignancy or were bone marrow or hematopoietic stem cell transplant recipients. Administration was well tolerated. Pre-infusion neutralizing titers ranged from 51 to 1765 geometric mean titer (mean 646±519) and all patients demonstrated at least a 4-fold rise (mean 6410±4470) 5-10 days post infusion. Eleven of 15 improved and were discharged from the hospital. Days from positive RSV test to RI-001 treatment was shorter in survivors compared to non-survivors (4.4±2.8 vs. 20.3±21.0 days, P=.02). CONCLUSION: Administration of RI-001 was well tolerated and resulted in significant increases in serum neutralizing antibody titers to RSV. Our data suggest that early identification of RSV and treatment with RI-001 may offer benefit.


Assuntos
Anticorpos Neutralizantes/uso terapêutico , Anticorpos Antivirais/uso terapêutico , Antivirais/uso terapêutico , Drogas em Investigação/uso terapêutico , Imunoglobulinas Intravenosas/uso terapêutico , Infecções por Vírus Respiratório Sincicial/tratamento farmacológico , Vírus Sincicial Respiratório Humano/imunologia , Infecções Respiratórias/tratamento farmacológico , Adolescente , Adulto , Idoso , Anticorpos Neutralizantes/administração & dosagem , Anticorpos Neutralizantes/efeitos adversos , Anticorpos Antivirais/administração & dosagem , Anticorpos Antivirais/efeitos adversos , Antivirais/administração & dosagem , Antivirais/efeitos adversos , Criança , Pré-Escolar , Ensaios de Uso Compassivo , Drogas em Investigação/administração & dosagem , Drogas em Investigação/efeitos adversos , Feminino , Humanos , Hospedeiro Imunocomprometido , Imunoglobulinas Intravenosas/administração & dosagem , Imunoglobulinas Intravenosas/efeitos adversos , Lactente , Infusões Intravenosas , Aplicação de Novas Drogas em Teste , Masculino , Pessoa de Meia-Idade , Infecções por Vírus Respiratório Sincicial/virologia , Infecções Respiratórias/virologia , Resultado do Tratamento , Adulto Jovem
19.
Liver Transpl ; 20(5): 544-51, 2014 May.
Artigo em Inglês | MEDLINE | ID: mdl-24493238

RESUMO

Bacterial and fungal infections are major causes of morbidity and mortality after liver transplantation (LT). The role of intestinal decontamination in the prevention of post-LT infections is controversial. Rifaximin is widely used for the treatment of hepatic encephalopathy. The effect of rifaximin on post-LT infections is unknown. The aim of our study was to determine the effect of rifaximin therapy in the pretransplant period on early bacterial infections (EBIs) and fungal infections within the first 30 days after LT. All adult patients who underwent LT at our institution (January 2009 to July 2011) were included in this retrospective cohort study. Patients receiving antibiotics other than pretransplant protocol antibiotics were excluded. Patients were stratified into 2 groups based on the presence or absence of rifaximin therapy for at least 2 days before LT. Infections were defined by the isolation of any bacterial or fungal organisms within 30 days of LT. Multivariate regression analysis, Student t tests, and Pearson's chi-square tests were used to compare the 2 groups. Two hundred sixty-eight patients were included, and 71 of these patients (26.5%) were on rifaximin at the time of LT. The 2 groups were comparable with respect to age, sex, race, and Model for End-Stage Liver Disease score. There were no significant differences in the rates of EBIs (30% for the non-rifaximin group and 25% for the rifaximin group, P = 0.48) or fungal infections between the 2 groups. There was no increase in antimicrobial resistance among the infecting organisms. There was no difference in survival between the rifaximin and non-rifaximin groups (98% versus 97%, P = 0.36). In conclusion, the use of rifaximin in the pre-LT period was not associated with an increased risk of bacterial or fungal infections in the early post-LT period.


Assuntos
Anti-Infecciosos/uso terapêutico , Infecções Bacterianas/prevenção & controle , Falência Hepática/cirurgia , Transplante de Fígado , Micoses/prevenção & controle , Rifamicinas/uso terapêutico , Idoso , Infecções Bacterianas/complicações , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Modelos Estatísticos , Análise Multivariada , Micoses/complicações , Estudos Retrospectivos , Rifaximina
20.
World J Hepatol ; 16(3): 379-392, 2024 Mar 27.
Artigo em Inglês | MEDLINE | ID: mdl-38577538

RESUMO

BACKGROUND: Due to development of an immune-dysregulated phenotype, advanced liver disease in all forms predisposes patients to sepsis acquisition, including by opportunistic pathogens such as fungi. Little data exists on fungal infection within a medical intensive liver unit (MILU), particularly in relation to acute on chronic liver failure. AIM: To investigate the impact of fungal infections among critically ill patients with advanced liver disease, and compare outcomes to those of patients with bacterial infections. METHODS: From our prospective registry of MILU patients from 2018-2022, we included 27 patients with culture-positive fungal infections and 183 with bacterial infections. We compared outcomes between patients admitted to the MILU with fungal infections to bacterial counterparts. Data was extracted through chart review. RESULTS: All fungal infections were due to Candida species, and were most frequently blood isolates. Mortality among patients with fungal infections was significantly worse relative to the bacterial cohort (93% vs 52%, P < 0.001). The majority of the fungal cohort developed grade 2 or 3 acute on chronic liver failure (ACLF) (90% vs 64%, P = 0.02). Patients in the fungal cohort had increased use of vasopressors (96% vs 70%, P = 0.04), mechanical ventilation (96% vs 65%, P < 0.001), and dialysis due to acute kidney injury (78% vs 52%, P = 0.014). On MILU admission, the fungal cohort had significantly higher Acute Physiology and Chronic Health Evaluation (108 vs 91, P = 0.003), Acute Physiology Score (86 vs 65, P = 0.003), and Model for End-Stage Liver Disease-Sodium scores (86 vs 65, P = 0.041). There was no significant difference in the rate of central line use preceding culture (52% vs 40%, P = 0.2). Patients with fungal infection had higher rate of transplant hold placement, and lower rates of transplant; however, differences did not achieve statistical significance. CONCLUSION: Mortality was worse among patients with fungal infections, likely attributable to severe ACLF development. Prospective studies examining empiric antifungals in severe ACLF and associations between fungal infections and transplant outcomes are critical.

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