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1.
Minerva Anestesiol ; 90(5): 452-461, 2024 05.
Artigo em Inglês | MEDLINE | ID: mdl-38571405

RESUMO

Liver transplantation is the only curative treatment option for patients with end-stage liver disease. Anesthesiologists and intensivists are fully involved in this procedure due to the perioperative care focus on hemodynamic, respiratory and metabolic support. However, quite surprisingly, postoperative pain management does not have clinical primary consideration in this class of patients due to a combination of factors including the thought that liver transplantation recipients have less pain and require lower doses of analgesics than patients who undergo other types of major abdominal surgery. Other factors contribute to make the management of postoperative pain somewhat complex in this class of patients: 1) drug pharmacokinetics and metabolism by the new liver is not predictable; 2) the multifactorial nature of liver graft recovery; and 3) the alterations of homeostasis, including circulatory, respiratory and metabolic vulnerability, in the days postoperative period. As a result, post-liver transplantation analgesia is underestimated not only from the clinical point of view but also in the literature and only a few papers deal with the management of postoperative pain in this particular class of patients. Thus, in the experts' opinion paper we aimed to report the possible strategies for managing post-LT pain with a focus on opioids alternatives and possible future developments in this particular clinical setting also in the view that improvements in perioperative care have made it possible to adopt fast track and Enhanced Recovery After Surgery-oriented protocols also in this class of patients.


Assuntos
Transplante de Fígado , Manejo da Dor , Dor Pós-Operatória , Humanos , Dor Pós-Operatória/tratamento farmacológico , Dor Pós-Operatória/terapia , Manejo da Dor/métodos , Analgésicos/uso terapêutico , Analgésicos Opioides/uso terapêutico , Previsões
2.
Clin Transplant ; 36(10): e14637, 2022 10.
Artigo em Inglês | MEDLINE | ID: mdl-35249250

RESUMO

BACKGROUND: Liver transplantation (LT) is frequently complicated by coagulopathy associated with end-stage liver disease (ESLD), that is, often multifactorial. OBJECTIVES: The objective of this systematic review was to identify evidence based intraoperative transfusion and coagulation management strategies that improve immediate and short-term outcomes after LT. METHODS: PRISMA-guidelines and GRADE-approach were followed. Three subquestions were formulated. (Q); Q1: transfusion management; Q2: antifibrinolytic therapy; and Q3: coagulation monitoring. RESULTS: Sixteen studies were included for Q1, six for Q2, and 10 for Q3. Q1: PRBC and platelet transfusions were associated with higher mortality. The use of prothrombin complex concentrate (PCC) and fibrinogen concentrate (FC) were not associated with reductions in intraoperative transfusion or increased thrombotic events. The use of cell salvage was not associated with hepatocellular carcinoma (HCC) recurrence or mortality. Cell salvage and transfusion education significantly decreased blood product transfusions. Q2: Epsilon-aminocaproic acid (EACA) and tranexamic acid (TXA) were not associated with decreased blood product transfusion, improvements in patient or graft survival, or increases in thrombotic events. Q3: Viscoelastic testing (VET) was associated with decreased allogeneic blood product transfusion compared to conventional coagulation tests (CCT) and is likely to be cost-effective. Coagulation management guided by VET may be associated with increases in FC and PCC use. CONCLUSION: Q1: A specific blood product transfusion practice is not recommended (QOE; low | Recommendation; weak). Cell salvage and educational interventions are recommended (QOE: low | Grade of Recommendation: moderate). Q2: The routine use of antifibrinolytics is not recommended (QOE; low | Recommendation; weak). Q3: The use of VET is recommended (QOE; low-moderate | Recommendation; strong).


Assuntos
Antifibrinolíticos , Carcinoma Hepatocelular , Neoplasias Hepáticas , Transplante de Fígado , Humanos , Antifibrinolíticos/uso terapêutico , Transfusão de Sangue , Tromboelastografia
3.
Transplantation ; 106(3): 552-561, 2022 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-33966024

RESUMO

BACKGROUND: Enhanced Recovery After Surgery (ERAS) is a multimodal, evidence-based, program of care developed to minimize the response to surgical stress, associated with reduced perioperative morbidity and hospital stay. This study presents the specific ERAS Society recommendations for liver transplantation (LT) based on the best available evidence and on expert consensus. METHODS: PubMed and ClinicalTrials.gov were searched in April 2019 for published and ongoing randomized clinical trials on LT in the last 15 y. Studies were selected by 5 independent reviewers and were eligible if focusing on each validated ERAS item in the area of adult LT. An e-Delphi method was used with an extended interdisciplinary panel of experts to validate the final recommendations. RESULTS: Forty-three articles were included in the systematic review. A consensus was reached among experts after the second round. Patients should be screened for malnutrition and treated whenever possible. Prophylactic nasogastric intubation and prophylactic abdominal drainage may be omitted, and early extubation should be considered. Early oral intake, mobilization, and multimodal-balanced analgesia are recommended. CONCLUSIONS: The current ERAS recommendations were elaborated based on the best available evidence and endorsed by the e-Delphi method. Nevertheless, prospective studies need to confirm the clinical use of the suggested protocol.


Assuntos
Recuperação Pós-Cirúrgica Melhorada , Transplante de Fígado , Humanos , Tempo de Internação , Transplante de Fígado/efeitos adversos , Assistência Perioperatória/métodos , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/prevenção & controle , Estudos Prospectivos
4.
Transplantation ; 105(3): 561-568, 2021 03 01.
Artigo em Inglês | MEDLINE | ID: mdl-32568955

RESUMO

BACKGROUND: Critically ill cirrhotic patients are increasingly transplanted, but there is no consensus about futile liver transplantation (LT). Therefore, the decision to delay or deny LT is often extensively debated. These debates arise from different opinions of futility among transplant team members. This study aims to achieve a multinational and multidisciplinary consensus on the definition of futility in LT and to develop well-articulated criteria for not proceeding with LT due to futility. METHODS: Thirty-five international experts from anesthesiology/intensive care, hepatology, and transplant surgery were surveyed using the Delphi method. More than 70% of similar answers to a question were necessary to define agreement. RESULTS: The panel recommended patient and graft survival at 1 year after LT to define futility. Severe frailty and persistent fever or <72 hours of appropriate antimicrobial therapy in case of ongoing sepsis were considered reasons to delay LT. A simple assessment of the number of organs failing was considered the most appropriate way to decide whether LT should be delayed or denied, with respiratory, circulatory and metabolic failures having the most influence in this decision. The thresholds of severity of organ failures contraindicating LT for which a consensus was achieved were a Pao2/FiO2 ratio<150 mm Hg, a norepinephrine dose >1 µg/kg per minute and a serum lactate level >9 mmol/L. CONCLUSIONS: Our expert panel provides a consensus on the definition of futile LT and on specific criteria for postponing or denying LT. A framework that may facilitate the decision if a patient is too sick for transplant is presented.


Assuntos
Consenso , Estado Terminal , Cirrose Hepática/cirurgia , Transplante de Fígado/normas , Sobrevivência de Enxerto , Humanos , Índice de Gravidade de Doença
5.
Best Pract Res Clin Anaesthesiol ; 34(1): 25-33, 2020 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-32334784

RESUMO

Acute-on-chronic liver failure (AoCLF) represents a newly defined entity in patients with liver disease leading to multiple organ failures and increased mortality. To date, no universally accepted definition exists, and different academic societies developed guidelines on the early diagnosis and classification of AoCLF. Recently published trials focused on factors associated with a poor outcome and on the development of severity scores aimed to identify patients who may benefit for advanced monitoring and treatment. No specific therapies are demonstrated to improve survival, and liver transplantation (LT) remains the only treatment associated with improved outcome. Our review focuses on current evidence for early diagnosis and prognostication of disease in patients with AoCLF, as well of criteria for intensive care unit admission, indication, and futility markers of LT, as well as bridging therapy and optimal timing of surgery.


Assuntos
Insuficiência Hepática Crônica Agudizada/cirurgia , Transplante de Fígado/métodos , Insuficiência Hepática Crônica Agudizada/complicações , Animais , Embrião de Galinha , Doença Crônica , Cuidados Críticos , Humanos , Insuficiência de Múltiplos Órgãos/etiologia , Prognóstico
6.
BMC Anesthesiol ; 20(1): 31, 2020 01 30.
Artigo em Inglês | MEDLINE | ID: mdl-32000668

RESUMO

BACKGROUND: Jehovah's Witnesses represent a tremendous clinical challenge when indicated to liver transplantation because they refuse blood transfusion on religious grounds and the procedure is historically associated with potential massive peri-operative blood loss. We herein describe a peri-operative management pathway with strategies toward a transfusion-free environment with the aim not only of offering liver transplant to selected Jehovah's Witnesses patients but also, ultimately, of translating this practice to all general surgical procedures. METHODS: This is a retrospective review of prospective medical records of JW patients who underwent LT at our Institution. The peri-operative multimodal strategy to liver transplantation in Jehovah's Witnesses includes a pre-operative red cell mass optimization package and the intra-operative use of normovolemic haemodilution, veno-venous bypass and low central venous pressure. RESULTS: In a 9-year period, 13 Jehovah's Witness patients received liver transplantation at our centre representing the largest liver transplant program from deceased donors in Jehovah's Witnesses patients reported so far. No patient received blood bank products but 3 had fibrinogen concentrate and one tranexamic acid to correct ongoing hyper-fibrinolysis. There were 4 cases of acute kidney injury (one required extracorporeal renal replacement treatment) and one patient needed vasoactive medications to support blood pressure for the first 2 postoperative days. Two patients underwent re-laparotomy. Finally, of the 13 recipients, 12 were alive at the 1 year follow-up interview and 1 died due to septic complications. CONCLUSIONS: Our experience confirms that liver transplantation in selected Jehovah's Witnesses patients can be feasible and safe provided that it is carried out at a very experienced centre and according to a multidisciplinary approach.


Assuntos
Perda Sanguínea Cirúrgica/prevenção & controle , Testemunhas de Jeová , Transplante de Fígado/métodos , Assistência Perioperatória/métodos , Religião e Medicina , Adulto , Pressão Venosa Central/fisiologia , Feminino , Hemodiluição/métodos , Humanos , Cuidados Intraoperatórios/métodos , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Estudos Retrospectivos
7.
Minerva Anestesiol ; 85(7): 782-798, 2019 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-30945514

RESUMO

Recent data demonstrated that amongst patients undergoing elective surgery the prevalence of cirrhosis is 0.8% equating to approximately 25 million cirrhotic patients undergoing surgery each year worldwide. Overall, the presence of cirrhosis is independently associated with 47% increased risk of postoperative complications and over two and a half-increased risk of in-hospital mortality in patients undergoing elective surgery. In particular, perioperative patients with chronic liver disease have long been assumed to have a major bleeding risk on the basis of abnormal results for standard tests of hemostasis. However, recent evidence outlined significant changes to traditional knowledge and beliefs and, nowadays, with more sophisticated laboratory tests, it has been shown that patients with chronic liver disease may be in hemostatic balance as a result of concomitant changes in both pro- and antihemostatic pathways. The aim of this paper endorsed by the Liver Intensive Care Group of Europe was to provide an up-to-date overview of coagulation management in perioperative patients with chronic liver disease focusing on patient blood management, monitoring of hemostasis, and current role of hemostatic agents.


Assuntos
Transtornos da Coagulação Sanguínea/etiologia , Perda Sanguínea Cirúrgica/prevenção & controle , Procedimentos Cirúrgicos Eletivos , Técnicas Hemostáticas , Cirrose Hepática/complicações , Assistência Perioperatória/métodos , Hemorragia Pós-Operatória/terapia , Anemia/epidemiologia , Anemia/terapia , Transtornos da Coagulação Sanguínea/tratamento farmacológico , Transtornos da Coagulação Sanguínea/terapia , Fatores de Coagulação Sanguínea/uso terapêutico , Testes de Coagulação Sanguínea , Desamino Arginina Vasopressina/uso terapêutico , Europa (Continente)/epidemiologia , Fator VIIa/uso terapêutico , Fibrinogênio/uso terapêutico , Fibrinólise , Fibrinolíticos/uso terapêutico , Hemostasia/efeitos dos fármacos , Hemostasia/fisiologia , Hemostáticos/uso terapêutico , Humanos , Cirrose Hepática/epidemiologia , Assistência Perioperatória/normas , Plasma , Testes de Função Plaquetária , Transfusão de Plaquetas , Hemorragia Pós-Operatória/etiologia , Proteínas Recombinantes/uso terapêutico
8.
Transpl Immunol ; 52: 45-52, 2019 02.
Artigo em Inglês | MEDLINE | ID: mdl-30414446

RESUMO

Immunosuppressive therapy greatly contributed to making liver transplantation the standard treatment for end-stage liver diseases. However, it remains difficult to predict and measure the efficacy of pharmacological immunosuppression. Therefore, we used a panel of standardized, commonly available, biomarkers with the aim to describe their changes in the first 3 weeks after the transplant procedure and assess if they may help therapeutic drug monitoring in better tailoring the dose of the immunosuppressive drugs. We prospectively studied 72 consecutive patients from the day of liver transplant (post-operative day #0) until the post-operative day #21. Leukocytes, neutrophils, lymphocytes (CD4+, CD8+), natural killer cells, monocytes, immunoglobulins and tacrolimus serum levels were measured on peripheral blood (at day 0, 3, 7, 14, 21 after surgery). Patients who developed infections showed significantly higher CD64+ monocytes on post operative day #7. IgG levels were lower on post operative day #3 among patients who later developed infections. We also found that a sharp decrease in IgA from post operative day #0 to 3 (-226 mg/dL in the ROC curve analysis) strongly correlates with the onset of infections among HCV- patients. No specific markers of rejection emerged from the tested panel of markers. Our results show that some early changes in peripheral blood white cells and immunoglobulins may predict the onset of infections and may be useful in modulating the immunosuppressive therapy. However, a panel of commonly available, standardized biomarkers do not support in improving therapeutic drug monitoring ability to individualize immunosuppressive drugs dosing.


Assuntos
Rejeição de Enxerto/diagnóstico , Infecções/diagnóstico , Monitorização Imunológica/métodos , Monócitos/imunologia , Complicações Pós-Operatórias/diagnóstico , Transplantados , Adulto , Idoso , Biomarcadores/metabolismo , Feminino , Rejeição de Enxerto/etiologia , Humanos , Imunoglobulina A/metabolismo , Imunoglobulina G/metabolismo , Infecções/etiologia , Transplante de Fígado , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos
9.
Semin Cardiothorac Vasc Anesth ; 22(2): 191-196, 2018 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-29488444

RESUMO

A body of scientific studies has shown that early extubation is safe and cost-effective in a large number of liver transplant (LT) recipients including pediatric patients. However, fast-track practices are not universally accepted, and debate still lingers about whether these interventions are safe and serve the patients' best interest. In this article, we focus on reasons why physicians still have a persistent, although diminishing, reluctance to adopt fast-track protocols. We stress the importance of collection/analysis of perioperative data, adoption of a consensus-based standardized protocol for perioperative care, and formation of LT anesthesia focused teams and leadership. We conclude that the practice of early extubation and fast-tracking after LT surgery could help improve anesthesia performance, safety, and cost-effectiveness.


Assuntos
Extubação , Transplante de Fígado , Assistência Perioperatória , Humanos , Curva de Aprendizado
10.
Transfus Apher Sci ; 56(2): 238-240, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28223040

RESUMO

Immunosuppressive medication dosing errors are not unfrequent and may present a number of challenges to transplant clinicians. Tacrolimus (TAC) is a widely used immunosuppressant with a narrow therapeutic index and potential severe side effects, including neurotoxicity and kidney injury. We herein report a case of 60-year-old woman who underwent deceased-donor liver transplantation at our center and due to inadvertent TAC overexposure was admitted to the Intensive Care Unit because of severe neurologic impairment, kidney injury and arterial hypotension. This case was challenging because TAC is largely bound to erythrocytes, has a high molecular weight, is highly lipophilic, has a high distribution volume and cannot be removed by hemodialysis or plasmapheresis. Based on these considerations, we decided to replace TAC-saturated erythrocytes with blood-bank red cells with the aim to accelerate its clearance. The treatment was effective in decreasing TAC whole blood trough levels within the therapeutic ranges with a significant improvement of the patient's clinical status. Red-blood cell exchange is a potentially safe and effective means of managing severe and symptomatic TAC toxicity.


Assuntos
Citaferese , Overdose de Drogas/terapia , Transfusão de Eritrócitos , Eritrócitos , Tacrolimo/efeitos adversos , Feminino , Humanos , Pessoa de Meia-Idade , Tacrolimo/administração & dosagem
11.
Liver Transpl ; 22(5): 588-98, 2016 05.
Artigo em Inglês | MEDLINE | ID: mdl-26784011

RESUMO

The use of octogenarian donors to increase the donor pool in liver transplantation (LT) is controversial because advanced donor age is associated with a higher risk of ischemic-type biliary lesions (ITBL). The aim of this study was to investigate retrospectively the role of a number of different pre-LT risk factors for ITBL in a selected population of recipients of octogenarian donor grafts. Between January 2003 and December 2013, 123 patients underwent transplantation at our institution with deceased donor grafts from donors of age ≥80 years. Patients were divided into 2 groups based on the presence of ITBL in the posttransplant course. Exclusion criteria were retransplantations, presence of vascular complications, and no availability of procurement liver biopsy. A total of 88 primary LTs were included, 73 (83.0%) with no posttransplant ITBLs and 15 (17.0%) with ITBLs. The median follow-up after LT was 2.1 years (range, 0.7-5.4 years). At multivariate analysis, donor hemodynamic instability (hazard ratio [HR], 7.6; P = 0.005), donor diabetes mellitus (HR, 9.5; P = 0.009), and donor age-Model for End-Stage Liver Disease (HR, 1.0; P = 0.04) were risk factors for ITBL. Transplantation of liver grafts from donors of age ≥80 years is associated with a higher risk for ITBL. However, favorable results can be achieved with accurate donor selection. Donor hemodynamic instability, a donor history of diabetes mellitus, and allocation to higher Model for End-Stage Liver Disease score recipient all increase the risk of ITBL and are associated with worse graft survival when octogenarian donors are used. Liver Transplantation 22 588-598 2016 AASLD.


Assuntos
Sistema Biliar/lesões , Transplante de Fígado/efeitos adversos , Medição de Risco/métodos , Doadores de Tecidos , Idoso de 80 Anos ou mais , Algoritmos , Sistema Biliar/patologia , Doença Hepática Terminal/cirurgia , Feminino , Sobrevivência de Enxerto , Hemodinâmica , Humanos , Masculino , Modelos de Riscos Proporcionais , Curva ROC , Estudos Retrospectivos , Índice de Gravidade de Doença , Fatores de Tempo , Resultado do Tratamento
13.
J Anesth ; 29(3): 426-432, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25433498

RESUMO

PURPOSE: Acute kidney injury remains a serious complication after orthotopic liver transplantation. To date, several 'renal-protective' agents have been explored in this setting but with conflicting and disappointing results. Therefore, our aim is to evaluate the effects of fenoldopam in liver transplant patients with an established renal injury. METHODS: In this prospective study, intravenous fenoldopam 0.1 µg/kg/min was administered to consecutive liver transplant patients with postoperative (within 7 days from surgery) stage 2 acute kidney injury (AKI) according to the Acute Kidney Injury Network classification. Actual glomerular filtration rate (GFR; calculated by the iohexol plasma clearance), serum creatinine (SCr) and cystatin C (SCyC) were used to assess the effect of the medication on the patients. RESULTS: During the study, 295 patients underwent liver transplant. Fifty-one patients (17.6%) met the inclusion criteria and the data from 48 patients were analysed. SCr and SCyC levels decreased (p < 0.001 after 48 h; p < 0.0001 after 72 h) and GFR increased (p < 0.001 after 24 h; p < 0.0001 after 72 h). When compared to a cohort of comparable patients with AKI from our historical series, the patients in the present study showed better SCr and SCyC levels. It was not necessary to discontinue the infusion of fenoldopam in any patient because of the occurrence of adverse events potentially attributable to it. CONCLUSION: We showed that fenoldopam was capable of improving some renal function parameters in postoperative liver transplantation patients with on-going AKI. This preliminary study now sets the stage for a multicenter, randomized, placebo-controlled trial in order to provide definite evidence.


Assuntos
Injúria Renal Aguda/tratamento farmacológico , Fenoldopam/administração & dosagem , Transplante de Fígado/efeitos adversos , Injúria Renal Aguda/etiologia , Creatinina/metabolismo , Cistatina C/metabolismo , Feminino , Taxa de Filtração Glomerular/efeitos dos fármacos , Humanos , Testes de Função Renal , Masculino , Pessoa de Meia-Idade , Período Pós-Operatório , Estudos Prospectivos
14.
Transpl Immunol ; 28(4): 193-7, 2013 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-23597701

RESUMO

This study was prospectively aimed at having better information about the natural history of serum cytokines in cirrhotic patients undergoing liver transplant surgery and at assessing their ability to set up an appropriate dynamic relationship between pro-inflammation and anti-inflammation. The levels of six cytokines (TNF-α, IL-1, IL-2, IL-6, IL-8, IL-10) were measured in blood samples collected at different time points before, during and after (48 h) the transplant procedure from the radial artery of 62 consecutive cirrhotic patients who underwent orthotopic liver transplantation. IL-1 always stayed within the normal range; IL-2 showed elevated baseline levels but decreased up to half at the end of the study (p<0.0001). IL-6 peaked at the end of surgery and returned to baseline 48 h afterwards. The same happened to IL-8 concentrations. IL-10 levels shown above the normal threshold at baseline, peaked at the end of surgery (p<0.0001) and were halved at the end of the study (p<0.0001). TNF-α peaked at the end of surgery without, however, being different from baseline levels (p=0.6). The physiologic pattern of cytokine release and their dynamic relationship was found to be preserved with a quick return to a balance between pro-inflammation and anti-inflammation as shown by the IL-6/IL-10 and TNF-α/IL 10 ratios (used to assess the inflammatory balance). A correlation was found between perioperative pro-inflammatory cytokine levels and the severity of the liver disease necessitating OLT. In summary, cirrhotic patients can achieve a balanced inflammatory response to surgery which is considered a primary requirement for uneventful grafts and patients' postoperative recovery.


Assuntos
Citocinas/sangue , Inflamação/imunologia , Cirrose Hepática/imunologia , Transplante de Fígado , Adulto , Feminino , Humanos , Interleucina-1/sangue , Interleucina-10/sangue , Interleucina-2/sangue , Interleucina-6/sangue , Interleucina-8/sangue , Fígado/patologia , Fígado/cirurgia , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos , Fator de Necrose Tumoral alfa/sangue
15.
Anesth Analg ; 113(3): 515-22, 2011 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-21680855

RESUMO

BACKGROUND: Reliable cardiac output monitoring is particularly useful in the cirrhotic patient undergoing liver transplant surgery, because cirrhosis of the liver is associated with a vasodilated and high output state, known as cirrhotic cardiomyopathy, that challenges the reliability of pulse contour cardiac output technology. The contractility of the ventricle in cirrhosis is impaired, which is tolerated even though the ejection fraction and cardiac output are elevated because of the low peripheral resistance. However, during surgery the cirrhotic patient can decompensate because of the physiological changes and stress of surgery. Recently, we showed that the FloTrac/Vigileo™ failed to perform in cirrhotic patients undergoing transplant surgery. In response, the company upgraded their software. Therefore, we have assessed the accuracy and reliability of this new third-generation (version 3.02) FloTrac/Vigileo algorithm software in the same setting. METHODS: The cardiac index was measured simultaneously by single-bolus thermodilution (CI(TD)), using a pulmonary artery catheter, and pulse contour analysis, using the FloTrac/Vigileo (CI(V)). Readings were made at 10 time points during and after liver transplant surgery in 21 patients. Comparisons with data from our 2009 study, which used second-generation (version 01.10) software, were also made. RESULTS: Our new data show that version 3.02 software significantly reduced the adverse effect on pulse contour cardiac output reading bias in low peripheral resistance states, and thus improves the overall precision and trending ability of the system. Regression analysis between CI(TD) and CI(V) showed that the correlation was moderate (r =0.67, 95% confidence interval, 0.40 to 0.86). The Bland and Altman analysis showed that bias was 0.4 L.min(-1) · m(-2), and the percentage error was 52% (95% confidence interval, 49% to 55%). Trending ability of the new software also was improved but was still well below the current benchmarks. CONCLUSION: The new software (version 3.02) provided substantial improvements over the previous versions with better overall precision and trending ability. Further algorithm refinements will increase this technology's reliability to be extensively used in the highly complex setting of cirrhotic patients undergoing liver transplantation.


Assuntos
Pressão Sanguínea , Débito Cardíaco , Cardiomiopatias/fisiopatologia , Cateterismo Periférico/instrumentação , Cirrose Hepática/cirurgia , Transplante de Fígado , Monitorização Intraoperatória/instrumentação , Artéria Radial/fisiopatologia , Software , Adulto , Algoritmos , Cardiomiopatias/etiologia , Cateterismo de Swan-Ganz , Desenho de Equipamento , Feminino , Humanos , Itália , Cirrose Hepática/complicações , Cirrose Hepática/fisiopatologia , Transplante de Fígado/efeitos adversos , Masculino , Pessoa de Meia-Idade , Valor Preditivo dos Testes , Análise de Regressão , Reprodutibilidade dos Testes , Processamento de Sinais Assistido por Computador , Termodiluição , Fatores de Tempo
16.
Transfus Apher Sci ; 43(2): 167-70, 2010 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-20691639

RESUMO

Thrombotic thrombocytopenic purpura (TTP) is associated with high mortality rates. TTP may have various and different presentations depending on the organs involved. It is now recognized to be the consequence of reduction of blood levels of the disintegrin and metalloprotease with thrombospondin motifs (ADAMTS)-13. Prompt diagnosis of TTP is paramount, because plasma exchange is the only treatment capable of improving patient's survival with a dual mechanism: removal of anti-ADAMTS-13 auto-antibodies and infusion of the active protease available in the fresh frozen plasma. We report herein on the challenges in diagnosing TTP-like complications of post-surgical facial surgery in a young male patient.


Assuntos
Púrpura Trombocitopênica Trombótica/diagnóstico , Proteínas ADAM/sangue , Proteína ADAMTS13 , Adulto , Autoanticorpos/química , Criopreservação , Face/cirurgia , Seguimentos , Humanos , Masculino , Plasma/metabolismo , Troca Plasmática/métodos , Complicações Pós-Operatórias/diagnóstico
17.
Curr Opin Anaesthesiol ; 23(2): 128-32, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-20124994

RESUMO

PURPOSE OF REVIEW: This review aims to identify specific criteria for cirrhotic cardiomyopathy, examine the correlation with perioperative adverse outcomes and explore options for hemodynamic monitoring. RECENT FINDINGS: Cirrhotic cardiomyopathy is characterized by an increase in cardiac output, blunted systolic contractile response to stress, diastolic dysfunction and electrophysiological abnormalities. Adverse events due to cirrhotic cardiomyopathy are not as well characterized, but evidence suggests that some cardiovascular complications during surgery and in the postoperative period are caused by an impaired response to physiological stress. New developments in hemodynamic monitoring using not only thermodilution technology provide more reliable information about cardiac performance than pressure-derived measures. Transesophogeal echocardiography also offers the physician new information including the ability to visualize heart structures, shape, and function. SUMMARY: To detect cirrhotic cardiomyopathy, physicians must conduct a systematic examination of the patient. Overt manifestations of cirrhotic cardiomyopathy often only become evident after a patient is exposed to physiological or drug-induced stress. Appropriate hemodynamic monitoring is a cornerstone in the perioperative management of cirrhotic patients.


Assuntos
Anestesia , Cardiomiopatia Alcoólica/complicações , Cirrose Hepática Alcoólica/complicações , Assistência Perioperatória , Hemodinâmica/fisiologia , Humanos , Monitorização Fisiológica
18.
Curr Opin Organ Transplant ; 14(3): 297-302, 2009 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-19417660

RESUMO

PURPOSE OF REVIEW: The trend to extubate patients as soon as possible following large and complex surgery is supported by a large body of evidence showing early extubation is safe and saves money. However, the use of early extubation in liver transplant recipients is still debated. This review will explore the reasons why there is still resistance to the use of early extubation in liver transplantation. RECENT FINDINGS: Studies show the majority of liver transplant recipients can be extubated immediately after surgery. A multiinstitutional study addressed the safety of immediate postoperative intubation and confirmed that the rate of complications and reintubation was similar to the very low rate observed in recovery room patients. Investigators, however, cannot agree on what patient or donor factors predict successful extubation. These variables seem to differ between institutions. SUMMARY: There is robust evidence to support the use of immediate postoperative ventilation in liver transplant recipients. There is no evidence, however, to show that routine ventilation of all transplant recipients provides outcomes that are as good as those documented in extubated patients. It is probably time to turn the evidentiary tables around and ask proponents of routine ventilation to prove that they have done no harm and that they meet the new minimal performance standards established by immediate postoperative extubation.


Assuntos
Intubação Intratraqueal , Transplante de Fígado , Respiração Artificial , Redução de Custos , Medicina Baseada em Evidências , História do Século XX , História do Século XXI , Custos Hospitalares , Humanos , Intubação Intratraqueal/efeitos adversos , Intubação Intratraqueal/economia , Intubação Intratraqueal/história , Transplante de Fígado/efeitos adversos , Transplante de Fígado/economia , Transplante de Fígado/história , Cuidados Pós-Operatórios , Guias de Prática Clínica como Assunto , Respiração Artificial/efeitos adversos , Respiração Artificial/economia , Respiração Artificial/história , Medição de Risco , Fatores de Tempo
19.
Transplantation ; 86(12): 1666-71, 2008 Dec 27.
Artigo em Inglês | MEDLINE | ID: mdl-19104402

RESUMO

BACKGROUND: Donor's age and immunosuppression influence the severity of hepatitis C virus (HCV) recurrence. We analyzed the 18-month mortality in 302 consecutive HCV recipients, divided into three groups, with homogeneous immunosuppression and preemptive antiviral therapy in the last group. PATIENTS: Group 1: one hundred thirty-three patients (1996-2000) mainly received a triple therapy (steroids- cyclosporine A [CyA]-azathioprine); first line treatment of biopsy-proven acute rejection (BPAR) was with steroid boluses; second-line with OKT3. Group 2: ninety-one patients (2001-2003) mainly received a double therapy (steroids-CyA) and induction with anti-CD25 antibody; first-line BPAR treatment was increased dose/switch of the calcineurin inhibitor; second-line steroid boluses; third-line extracorporeal photopheresis (ECP). Group 3: seventy-eight patients (2004-June 2006) mainly received a monotherapy (CyA) associated with ECP and induction with anti-CD25 antibody; first-line BPAR treatment was increased dose/switch of calcineurin inhibitor with increased ECP frequency, second-line steroid boluses, and third-line retransplantation. RESULTS: Median donor's age increased from 54 (13-84) years in group 1 to 60 (10-93) years in group 2 and 66 (17-84) years in group 3 (P<0.001). Overall mortality in groups 1, 2, and 3 decreased from 28.6% to 22% and 10.2% respectively (P = 0.003); HCV-related mortality from 7.5% and 12.1% to 1.3%, respectively (P = 0.029). BPAR were 33.8% in group 1 and 9.0% in group 3. Applicability of the preemptive antiviral therapy in group 3 was 69.2%. Sustained viral clearance occurred in 38.9% of 36 patients who completed the protocol. At multivariate analysis, a single-drug immunosuppressive regimen was the only variable independently associated with survival (P=0.05). CONCLUSION: Low and steady immunosuppression combined with preemptive antiviral therapy significantly improved the short-term mortality of HCV recipients transplanted with aged organs. Prolonged follow-up will assess whether this benefit is maintained in the long run.


Assuntos
Antivirais/uso terapêutico , Hepatite C/cirurgia , Imunossupressores/uso terapêutico , Transplante de Fígado/fisiologia , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Criança , Quimioterapia Combinada , Rejeição de Enxerto/patologia , Hepatite C/tratamento farmacológico , Humanos , Itália , Transplante de Fígado/imunologia , Transplante de Fígado/mortalidade , Pessoa de Meia-Idade , Estudos Retrospectivos , Taxa de Sobrevida , Resultado do Tratamento , Adulto Jovem
20.
Hepatogastroenterology ; 55(85): 1458-9, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18795711

RESUMO

Patients with severe liver trauma may be referred to liver transplantation (LT), even though no universal algorithm is currently agreed upon. LT is usually performed as a two-stage procedure after failure of primary surgery or in the event of surgery-related acute liver failure (ALF), but pre-transplant patient management, appropriate selection criteria and prompt referral to LT centers are paramount for a favorable graft outcome. This is a report on a patient who underwent LT as a two-stage procedure for sepsis-related ALF after extended right hepatectomy for a complex abdominal blunt trauma. Prompt referral to the Liver Transplant Unit of the Cisanello Hospital, Pisa, where the whole spectrum of surgical options and intensive care support are available was crucial to allow successful LT in a timely fashion. Therefore, the authors strongly advocate the whole algorithm for patients with severe liver traumas be put under control of an experienced LT team in order to improve surgical results.


Assuntos
Hepatectomia/efeitos adversos , Falência Hepática Aguda/etiologia , Falência Hepática Aguda/cirurgia , Transplante de Fígado/métodos , Fígado/lesões , Ferimentos não Penetrantes/cirurgia , Humanos , Masculino , Sepse/complicações , Adulto Jovem
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