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1.
J R Coll Physicians Edinb ; : 14782715241244839, 2024 Apr 04.
Artigo em Inglês | MEDLINE | ID: mdl-38576167

RESUMO

A 49-year-old female patient presented at the hospital with a history of herpetic blisters, frequent episodes of vomiting and loose stools, bilateral upper and lower limb weakness, and diminishing sensorium. She was diagnosed with hyponatraemia and respiratory failure and later became unconscious with absent brainstem reflexes. The patient was initially treated for herpetic encephalitis, a chronic obstructive pulmonary disease with acute exacerbation, hyponatraemia and neuroparalytic snake bite. Further evaluation, however, identified the uncommon Guillain Barre syndrome presentation with overlap of Bickerstaff brainstem encephalitis. This is an uncommon disorder characterised by the involvement of higher mental functions, fixed dilated pupils, absent brainstem reflexes and quadriplegia that resembles a neuroparalytic snake bite and brain death. After receiving intravenous immunoglobulins for treatment, the patient completely recovered.

2.
Chest ; 165(4): 959-966, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38599752

RESUMO

Technical and clinical developments have raised challenging questions about the concept and practice of brain death, culminating in recent calls for revision of the Uniform Determination of Death Act (UDDA), which established a whole brain standard for neurologic death. Proposed changes range from abandoning the concept of brain death altogether to suggesting that current clinical practice simply should be codified as the legal standard for determining death by neurologic criteria (even while acknowledging that significant functions of the whole brain might persist). We propose a middle ground, clarifying why whole brain death is a conceptually sound standard for declaring death, and offering procedural suggestions for increasing certainty that this standard has been met. Our approach recognizes that whole brain death is a functional, not merely anatomic, determination, and incorporates an understanding of the difficulties inherent in making empirical judgments in medicine. We conclude that whole brain death is the most defensible standard for determining neurologic death-philosophically, biologically, and socially-and ought to be maintained.


Assuntos
Morte Encefálica , Encéfalo , Humanos , Morte Encefálica/diagnóstico
3.
World J Transplant ; 14(1): 89702, 2024 Mar 18.
Artigo em Inglês | MEDLINE | ID: mdl-38576765

RESUMO

BACKGROUND: Prolonged donor hepatectomy time may be implicated in early and late complications of liver transplantation. AIM: To evaluate the impact of donor hepatectomy time on outcomes of liver transplant recipients, mainly early allograft dysfunction. METHODS: This multicenter retrospective study included brain-dead donors and adult liver graft recipients. Donor-recipient matching was obtained through a crossover list. Clinical and laboratory data were recorded for both donors and recipients. Donor hepatectomy, cold ischemia, and warm ischemia times were recorded. Primary outcome was early allograft dysfunction. Secondary outcomes included need for retransplantation, length of intensive care unit and hospital stay, and patient and graft survival at 12 months. RESULTS: From January 2019 to December 2021, a total of 243 patients underwent a liver transplant from a brain-dead donor. Of these, 57 (25%) developed early allograft dysfunction. The median donor hepatectomy time was 29 (23-40) min. Patients with early allograft dysfunction had a median hepatectomy time of 25 (22-38) min, whereas those without it had a median time of 30 (24-40) min (P = 0.126). CONCLUSION: Donor hepatectomy time was not associated with early allograft dysfunction, graft survival, or patient survival following liver transplantation.

4.
Trauma Surg Acute Care Open ; 9(Suppl 2): e001408, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38646028

RESUMO

Major improvements in trauma care during the last decade have improved survival rates in the severely injured. The unintended consequence is the presentation of patients with non-survivable injuries in a time frame in which intervention is considered and often employed due to prognostic uncertainty. In light of this, discerning survivability in these patients remains increasingly problematic. Evidence-based cut-points of futility can guide early decisions for discontinuing aggressive treatment and use of precious resources in severely injured patients arriving in extremis.

5.
J Surg Res ; 298: 109-118, 2024 Apr 10.
Artigo em Inglês | MEDLINE | ID: mdl-38603941

RESUMO

INTRODUCTION: Brain death (BD) compromises the viability of the lung for donation. Hypertonic saline solution (HSS) induces rapid intravascular volume expansion and immunomodulatory action. We investigated its role in ventilatory mechanics (VMs) and in the inflammatory activity of the lungs of rats subjected to BD. METHODS: Wistar rats were divided into four groups: control, n = 10: intact rats subjected to extraction of the heart-lung block; BD, n = 8 (BD): rats treated with isotonic saline solution (4 mL/kg) immediately after BD; hypertonic saline 0 h, n = 9 (Hip.0'): rats treated with HSS (4 mL/kg) immediately after BD; and hypertonic saline 1 h, n = 9 (Hip.60'), rats treated with HSS (4 mL/kg) 60 min after BD. The hemodynamic characteristics, gas exchange, VMs, inflammatory mediators, and histopathological evaluation of the lung were evaluated over 240 min of BD. RESULTS: In VMs, we observed increased airway resistance, tissue resistance, tissue elastance, and respiratory system compliance in the BD group (P < 0.037), while the treated groups showed no impairment over time (P > 0.05). In the histological analysis, the BD group showed a greater area of perivascular edema and a higher neutrophil count than the control group and the Hip.60' group (P < 0.05). CONCLUSIONS: Treatment with HSS was effective in preventing changes in the elastic and resistive pulmonary components, keeping them at baseline levels. Late treatment reduced perivascular and neutrophilic edema in lung tissue.

6.
Respirology ; 2024 Apr 22.
Artigo em Inglês | MEDLINE | ID: mdl-38648859

RESUMO

Lung transplantation is a well-established treatment for advanced lung disease, improving survival and quality of life. Over the last 60 years all aspects of lung transplantation have evolved significantly and exponential growth in transplant volume. This has been particularly evident over the last decade with a substantial increase in lung transplant numbers as a result of innovations in donor utilization procurement, including the use donation after circulatory death and ex-vivo lung perfusion organs. Donor lungs have proved to be surprisingly robust, and therefore the donor pool is actually larger than previously thought. Parallel to this, lung transplant outcomes have continued to improve with improved acute management as well as microbiological and immunological insights and innovations. The management of lung transplant recipients continues to be complex and heavily dependent on a tertiary care multidisciplinary paradigm. Whilst long term outcomes continue to be limited by chronic lung allograft dysfunction improvements in diagnostics, mechanistic understanding and evolutions in treatment paradigms have all contributed to a median survival that in some centres approaches 10 years. As ongoing studies build on developing novel approaches to diagnosis and treatment of transplant complications and improvements in donor utilization more individuals will have the opportunity to benefit from lung transplantation. As has always been the case, early referral for transplant consideration is important to achieve best results.

7.
Neurocrit Care ; 2024 Apr 05.
Artigo em Inglês | MEDLINE | ID: mdl-38580801

RESUMO

BACKGROUND: Hypoxemia is the main modifiable factor preventing lungs from being transplanted from organ donors after brain death. One major contributor to impaired oxygenation in patients with brain injury is atelectasis. Apnea testing, an integral component of brain death declaration, promotes atelectasis and can worsen hypoxemia. In this study, we tested whether performing a recruitment maneuver (RM) after apnea testing could mitigate hypoxemia and atelectasis. METHODS: During the study period, an RM (positive end-expiratory pressure of 15 cm H2O for 15 s then 30 cm H2O for 30 s) was performed immediately after apnea testing. We measured partial pressure of oxygen, arterial (PaO2) before and after RM. The primary outcomes were oxygenation (PaO2 to fraction of inspired oxygen [FiO2] ratio) and the severity of radiographic atelectasis (proportion of lung without aeration on computed tomography scans after brain death, quantified using an image analysis algorithm) in those who became organ donors. Outcomes in RM patients were compared with control patients undergoing apnea testing without RM in the previous 2 years. RESULTS: Recruitment maneuver was performed in 54 patients after apnea testing, with a median immediate increase in PaO2 of 63 mm Hg (interquartile range 0-109, p = 0.07). Eighteen RM cases resulted in hypotension, but none were life-threatening. Of this cohort, 37 patients became organ donors, compared with 37 donors who had apnea testing without RM. The PaO2:FiO2 ratio was higher in the RM group (355 ± 129 vs. 288 ± 127, p = 0.03), and fewer had hypoxemia (PaO2:FiO2 ratio < 300 mm Hg, 22% vs. 57%; p = 0.04) at the start of donor management. The RM group showed less radiographic atelectasis (median 6% vs. 13%, p = 0.045). Although there was no difference in lungs transplanted (35% vs. 24%, p = 0.44), both better oxygenation and less atelectasis were associated with a higher likelihood of lungs being transplanted. CONCLUSIONS: Recruitment maneuver after apnea testing reduces hypoxemia and atelectasis in organ donors after brain death. This effect may translate into more lungs being transplanted.

8.
Ann Gastroenterol Surg ; 8(2): 312-320, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38455485

RESUMO

Aims: The use of extended criteria donors is a routine practice that sometimes involves extracorporeal membrane oxygenation (ECMO) in donations after cardiac death or brain death. Methods: We performed a retrospective study in a single center from January 2006 to December 2019. The study included 90 deceased donor liver transplants. The patients were divided into three groups: the donation after brain death (DBD) group (n = 58, 64.4%), the DBD with ECMO group (n = 11, 12.2%) and the donation after cardiac death (DCD) with ECMO group (n = 21, 23.3%). Results: There were no significant differences between the DBD with ECMO group and the DBD group. When comparing the DCD with ECMO group and the DBD group, there were statistically significant differences for total warm ischemia time (p < 0.001), total cold ischemia time (p = 0.023), and split liver transplantation (p < 0.001), and there was significantly poor recovery in regard to total bilirubin level (p = 0.027) for the DCD with ECMO group by repeated measures ANOVA. The 5-year survival rates of the DBD, DBD with ECMO, and DCD with ECMO groups were 78.1%, 90.9%, and 75.6%, respectively. The survival rate was not significantly different when comparing the DBD group to either the DBD with ECMO group (p = 0.435) or the DCD with ECMO group (p = 0.310). Conclusions: Using ECMO in donations after cardiac death or brain death is a good technology, and it contributed to 35.6% of the liver graft pool.

9.
Front Neurol ; 15: 1294601, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38456154

RESUMO

Objective: This study aims to explore the training mode for brain death determination to ensure the quality of subsequent brain death determination. Methods: A four-skill and four-step (FFT) training model was adopted, which included a clinical neurological examination, an electroencephalogram (EEG) examination, a short-latency somatosensory evoked potential (SLSEP) examination, and a transcranial Doppler (TCD) examination. Each skill is divided into four steps: multimedia theory teaching, bedside demonstration, one-on-one real or dummy simulation training, and assessment. The authors analyzed the training results of 1,577 professional and technical personnel who participated in the FFT training model from 2013 to 2020 (25 sessions), including error rate analysis of the written examination, knowledge gap analysis, and influencing factors analysis. Results: The total error rates for all four written examination topics were < 5%, at 4.13% for SLSEP, 4.11% for EEG, 3.71% for TCD, and 3.65% for clinical evaluation. The knowledge gap analysis of the four-skill test papers suggested that the trainees had different knowledge gaps. Based on the univariate analysis and the multiple linear regression analysis, among the six factors, specialty categories, professional and technical titles, and hospital level were the independent influencing factors of answer errors (p < 0.01). Conclusion: The FFT model is suitable for brain death (BD) determination training in China; however, the authors should pay attention to the professional characteristics of participants, strengthen the knowledge gap training, and strive to narrow the difference in training quality.

10.
BMC Med Educ ; 24(1): 346, 2024 Mar 28.
Artigo em Inglês | MEDLINE | ID: mdl-38549110

RESUMO

BACKGROUND: The medical students' knowledge and attitude toward brain death has not been investigated in China. The aims of this study were to assess the knowledge and attitude toward brain death among medical students in China and assess the influence of medical education on the knowledge and attitude. METHODS: An online questionnaire consisting of 17 questions was developed and completed by undergraduates majoring in clinical medicine in China Medical University. The students' demographic data, knowledge and attitude toward brain death were collected and analyzed. RESULTS: A total of 1075 medical students participated in the survey, and 1051 of them completed the valid questionnaire. The exploratory factor analysis grouped the 17 items into four dimensions, which explained 63.5% of the total variance. These dimensions were named as knowledge (5 items), attitude (5 items), concern (3 items) and education needs (4 items) respectively. The global Cronbach α of the questionnaire was 0.845 and the Cronbach α of the four dimensions ranged from 0.756 to 0.866. The mean dimension scores of knowledge, attitude, concern and education needs was 3.67 ± 0.89, 3.67 ± 0.87, 3.10 ± 1.03 and 4.12 ± 0.72 respectively. The clinical students had a better knowledge than the preclinical students (P < 0.001). The clinical students had a more favorable attitude in stopping the treatment for a brain-dead family member and using the organs and/or tissues of brain-dead patients for transplantation (P < 0.001). The clinical students showed more concerns than the preclinical students (P < 0.001). There was no significant difference in the education needs between the clinical and pre-clinical students. CONCLUSIONS: Most medical students in China had insufficient knowledge about brain death. Although their knowledge of brain death increased with their university degree, their attitude toward organ donation after brain death did not evolve accordingly. Their concerns about brain death increased with seniority. Most students had great education needs about brain death.


Assuntos
Educação Médica , Estudantes de Medicina , Humanos , Estudos Transversais , Morte Encefálica , Conhecimentos, Atitudes e Prática em Saúde , Atitude , Inquéritos e Questionários
11.
J Med Philos ; 49(3): 313-323, 2024 Apr 20.
Artigo em Inglês | MEDLINE | ID: mdl-38538066

RESUMO

The controversy over the equivalence of continuous sedation until death (CSD) and physician-assisted suicide/euthanasia (PAS/E) provides an opportunity to focus on a significant extended use of CSD. This extension, suggested by the equivalence of PAS/E and CSD, is designed to promote additional patient autonomy at the end-of-life. Samuel LiPuma, in his article, "Continuous Sedation Until Death as Physician-Assisted Suicide/Euthanasia: A Conceptual Analysis" claims equivalence between CSD and death; his paper is seminal in the equivalency debate. Critics contend that sedation follows proportionality protocols for which LiPuma's thesis does not adequately account. Furthermore, sedation may not eliminate consciousness, and as such LiPuma's contention that CSD is equivalent to neocortical death is suspect. We not only defend the equivalence thesis, but also expand it to include additional moral considerations. First, we explain the equivalence thesis. This is followed by a defense of the thesis against five criticisms. The third section critiques the current use of CSD. Finally, we offer two proposals that, if adopted, would broaden the use of PAS/E and CSD and thereby expand options at the end-of-life.


Assuntos
Sedação Profunda , Eutanásia , Suicídio Assistido , Assistência Terminal , Humanos , Assistência Terminal/métodos , Cuidados Paliativos/métodos , Morte
12.
Am J Transplant ; 2024 Mar 21.
Artigo em Inglês | MEDLINE | ID: mdl-38521350

RESUMO

Donation after circulatory death (DCD) could account for the largest expansion of the donor allograft pool in the contemporary era. However, the organ yield and associated costs of normothermic regional perfusion (NRP) compared to super-rapid recovery (SRR) with ex-situ normothermic machine perfusion, remain unreported. The Organ Procurement and Transplantation Network (December 2019 to June 2023) was analyzed to determine the number of organs recovered per donor. A cost analysis was performed based on our institution's experience since 2022. Of 43 502 donors, 30 646 (70%) were donors after brain death (DBD), 12 536 (29%) DCD-SRR and 320 (0.7%) DCD-NRP. The mean number of organs recovered was 3.70 for DBD, 3.71 for DCD-NRP (P < .001), and 2.45 for DCD-SRR (P < .001). Following risk adjustment, DCD-NRP (adjusted odds ratio 1.34, confidence interval 1.04-1.75) and DCD-SRR (adjusted odds ratio 2.11, confidence interval 2.01-2.21; reference: DBD) remained associated with greater odds of allograft nonuse. Including incomplete and completed procurement runs, the total average cost of DCD-NRP was $9463.22 per donor. By conservative estimates, we found that approximately 31 donor allografts could be procured using DCD-NRP for the cost equivalent of 1 allograft procured via DCD-SRR with ex-situ normothermic machine perfusion. In conclusion, DCD-SRR procurements were associated with the lowest organ yield compared to other procurement methods. To facilitate broader adoption of DCD procurement, a comprehensive understanding of the trade-offs inherent in each technique is imperative.

13.
J Hepatol ; 2024 Mar 21.
Artigo em Inglês | MEDLINE | ID: mdl-38521169

RESUMO

BACKGROUND & AIMS: The National Liver Offering Scheme (NLOS) was introduced in the UK in 2018 to offer livers from deceased donors to patients on the national waiting list based, for most patients, on calculated transplant benefit. Before NLOS, livers were offered to transplant centres by geographic donor zones and, within centres, by estimated recipient need for a transplant. METHODS: UK Transplant Registry data on patient registrations and transplants were analysed to build survival on the list (M1) and survival post-transplantation (M2) statistical models. A separate cohort of registrations - not seen by the models before - was analysed to simulate what liver allocation would have been under M1, M2 and a Transplant Benefit Score (TBS) model (combining both M1 and M2), and to compare these allocations to what had been recorded in the Registry. Number of deaths on the waiting list and patient life years were used to compare the different simulation scenarios and to select the optimal allocation model. Registry data were monitored, pre- and post-NLOS, to understand the performance of the scheme. RESULTS: The TBS was identified as the optimal model to offer livers from donors after brain death (DBD) to adult and large paediatric elective recipients and, in the first two years of NLOS, 68% of DBD livers were offered using the TBS to this type of recipient. Monitoring data indicate that mortality on the waiting list post-NLOS significantly decreased compared with pre-NLOS (p<0.0001), and that patient survival post-listing is significantly greater post-than pre-NLOS (p=0.005). CONCLUSIONS: In the first two years of NLOS offering, waiting list mortality fell while post-transplant survival was not negatively impacted, delivering on the scheme's objectives. IMPACT AND IMPLICATIONS: The National Liver Offering Scheme (NLOS) was introduced in the UK in 2018 to increase transparency of the deceased donor liver offering process, maximise the overall survival of the waiting list population, and improve equity of access to liver transplantation. To our knowledge, it is the first scheme that offers organs based on statistical prediction of transplant benefit; the Transplant Benefit Score (TBS). The results are important to the transplant community - from healthcare practitioners to patients - and demonstrate that, in the first two years of NLOS offering, waiting-list mortality fell while post-transplant survival was not negatively impacted, thus delivering on the scheme's objectives. The scheme continues to be monitored to ensure that the TBS remains up-to-date and that signals that suggest the possible disadvantage of some patients are investigated.

14.
Front Public Health ; 12: 1356285, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38444435

RESUMO

Introduction: The COVID-19 pandemic had a negative impact on the number of solid organ transplantations. After a global decline of 16% in 2020, their numbers subsequently returned to pre-pandemic levels. In contrast, numbers in Germany remained almost constant in 2020 and 2021 but fell by 6.9% in 2022. The reasons for this divergent development are unknown. Methods: The number of deceased with a severe brain damage, potential and utilized donors after braindeath and the intensive care unit treatment capacity were retrospectively compared for the years 2022 and 2021 at five university hospitals in North Rhine-Westphalia, Germany. Reasons for a donation not utilized were reviewed. To enable a comparison of the results with the whole of Germany and the pre-pandemic period, numbers of potential and utilized donors were extracted from official organ donation activity reports of all harvesting hospitals in Germany for the years 2019-2022. Results: The numbers of deceased with a severe brain damage (-10%), potential (-9%), and utilized donors after braindeath (-44%), and intensive care unit treatment capacities (-7.2%) were significantly lower in 2022 than 2021. A COVID-19 infection was a rarer (-79%), but donor instability (+44%) a more frequent reason against donation in 2022, whereas preserved brain stem reflexes remained the most frequent reason in both years (54%). Overall numbers of potential and utilized donations in Germany were lower in 2022 than in the pre-pandemic period, but this was mainly due to lower numbers in hospitals of lower care. The number of potential donors in all university hospitals were higher in 2022 but utilized donations still lower than in 2019. Conclusion: The decrease in potential and utilized donations was a result of reduced intensive care unit treatment capacities and a lower conversion rate at the five university hospitals. A COVID-19 infection did not play a role in 2022. These results indicate that ICU treatment capacities must be restored to increase donations. The lower number of potential donors and the even lower conversion rate in 2022 throughout Germany show that restructuring the organ procurement process in Germany needs to be discussed to increase the number of donations.


Assuntos
COVID-19 , Transplante de Órgãos , Obtenção de Tecidos e Órgãos , Humanos , Pandemias , Estudos Retrospectivos , COVID-19/epidemiologia , Alemanha/epidemiologia , Hospitais Universitários
15.
Ann Hepatol ; 29(3): 101484, 2024 Feb 27.
Artigo em Inglês | MEDLINE | ID: mdl-38417629

RESUMO

INTRODUCTION AND OBJECTIVES: Due to organ shortages, liver transplantation (LT) using donation-after-circulatory-death (DCD) grafts has become more common. There is limited and conflicting evidence on LT outcomes using DCD grafts compared to those using donation-after-brain death (DBD) grafts for patients with hepatocellular carcinoma (HCC). We aimed to summarize the current evidence on the outcomes of DCD-LT and DBD-LT in patients with HCC. MATERIALS AND METHODS: Online databases were searched for studies comparing DCD-LT and DBD-LT outcomes in patients with HCC and a meta-analysis was conducted using fixed- or random-effects models. RESULTS: Five studies involving 487 (33.4%) HCC DCD-LT patients and 973 (66.6%) DBD-LT patients were included. The meta-analysis showed comparable 1-year [relative risk (RR)=0.99, 95%CI:0.95 to 1.03, p=0.53] and 3-year [RR=0.99, 95%CI:0.89 to 1.09, p=0.79] recurrence-free survival. The corresponding 1-year [RR=0.98, 95%CI:0.93 to 1.03, p=0.35] and 3-year [RR=0.94, 95%CI:0.87 to 1.01, p=0.08] patient survival and 1-year [RR=0.91, 95%CI:0.71 to 1.16, p=0.43] and 3-year [RR=0.92, 95%CI:0.67 to 1.26, p=0.59] graft survival were also comparable. There were no significant differences between the two cohorts regarding the tumor characteristics, donor/recipient risk factors and the incidence of post-operative complications, including acute rejection, primary non-function, biliary complications and retransplantation. CONCLUSIONS: Based on the current evidence, it has been found that comparable outcomes can be achieved in HCC patients using DCD-LT compared to DBD-LT, particularly when employing good quality graft, strict donor and recipient selection, and effective surgical management. The decision to utilize DCD-LT for HCC patients should be personalized, taking into consideration the risk of post-LT HCC recurrence. (PROSPERO ID: CRD42023445812).

16.
J Crit Care ; 81: 154545, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38395004

RESUMO

PURPOSE: The Harlequin syndrome may occur in patients treated with venoarterial extracorporal membrane oxygenation (VA-ECMO), in whom blood from the left ventricle and the ECMO system supply different parts of the body with different paCO2-levels. The purpose of this study was to compare two variants of paCO2-analysis to account for the Harlequin syndrome during apnea testing (AT) in brain death (BD) determination. MATERIALS AND METHODS: Twenty-seven patients (median age 48 years, 26-76 years; male n = 19) with VA-ECMO treatment were included who underwent BD determination. In variant 1, simultaneous arterial blood gas (ABG) samples were drawn from the right and the left radial artery. In variant 2, simultaneous ABG samples were drawn from the right radial artery and the postoxygenator ECMO circuit. Differences in paCO2-levels were analysed for both variants. RESULTS: At the start of AT, median paCO2-difference between right and left radial artery (variant 1) was 0.90 mmHg (95%-confidence intervall [CI]: 0.7-1.3 mmHg). Median paCO2-difference between right radial artery and postoxygenator ECMO circuit (variant 2) was 3.3 mmHg (95%-CI: 1.5-6.0 mmHg) and thereby significantly higher compared to variant 1 (p = 0.001). At the end of AT, paCO2-difference according to variant 1 remained unchanged with 1.1 mmHg (95%-CI: 0.9-1.8 mmHg). In contrast, paCO2-difference according to variant 2 increased to 9.9 mmHg (95%-CI: 3.5-19.2 mmHg; p = 0.002). CONCLUSIONS: Simultaneous paCO2-analysis from right and left distal arterial lines is the method of choice to reduce the risk of adverse effects (e.g. severe respiratory acidosis) while performing AT in VA-ECMO patients during BD determination.


Assuntos
Doenças do Sistema Nervoso Autônomo , Oxigenação por Membrana Extracorpórea , Rubor , Hipo-Hidrose , Humanos , Masculino , Pessoa de Meia-Idade , Feminino , Morte Encefálica , Oxigenação por Membrana Extracorpórea/métodos , Dióxido de Carbono
17.
Eur J Neurol ; 31(5): e16243, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38375732

RESUMO

BACKGROUND AND PURPOSE: The conceptualization of brain death (BD) was pivotal in the shaping of judicial and medical practices. Nonetheless, media reports of alleged recovery from BD reinforced the criticism that this construct is a self-fulfilling prophecy (by treatment withdrawal or organ donation). We meta-analyzed the natural history of BD when somatic support (SS) is maintained. METHODS: Publications on BD were eligible if the following were reported: aggregated data on its natural history with SS; and patient-level data that allowed censoring at the time of treatment withdrawal or organ donation. Endpoints were as follows: rate of somatic expiration after BD with SS; BD misdiagnosis, including "functionally brain-dead" patients (FBD; i.e. after the pronouncement of brain-death, ≥1 findings were incongruent with guidelines for its diagnosis, albeit the lethal prognosis was not altered); and length and predictors of somatic survival. RESULTS: Forty-seven articles were selected (1610 patients, years: 1969-2021). In BD patients with SS, median age was 32.9 years (range = newborn-85 years). Somatic expiration followed BD in 99.9% (95% confidence interval = 89.8-100). Mean somatic survival was 8.0 days (range = 1.6 h-19.5 years). Only age at BD diagnosis was an independent predictor of somatic survival length (coefficient = -11.8, SE = 4, p < 0.01). Nine BD misdiagnoses were detected; eight were FBD, and one newborn fully recovered. No patient ever recovered from chronic BD (≥1 week somatic survival). CONCLUSIONS: BD diagnosis is reliable. Diagnostic criteria should be fine-tuned to avoid the small incidence of misdiagnosis, which nonetheless does not alter the prognosis of FBD patients. Age at BD diagnosis is inversely proportional to somatic survival.


Assuntos
Morte Encefálica , Obtenção de Tecidos e Órgãos , Recém-Nascido , Humanos , Idoso de 80 Anos ou mais , Morte Encefálica/diagnóstico , Doadores de Tecidos , Causas de Morte , Incidência
18.
Omega (Westport) ; : 302228241236982, 2024 Feb 28.
Artigo em Inglês | MEDLINE | ID: mdl-38419299

RESUMO

Advancements in medicine introduced a relatively invented death into our lives: Brain Death. It intermingles with our perceptions of classical death due to knowing the heart is beating, the color of the skin is pink, and the body's temperature is warm. Hence, accepting brain death as death might get complicated in terms of relatives of the brain-dead person. The interviews revealed that the reluctance to cadaveric organ donations is highly connected to the cultural perception of death. Furthermore, folklore interferes with altruistic cadaveric donations, particularly folk beliefs, rituals, social norms, and oral traditions.

19.
Theor Med Bioeth ; 45(2): 109-131, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38332427

RESUMO

In 2017, Michael Nair-Collins formulated his Transitivity Argument which claimed that brain-dead patients are alive according to a concept that defines death in terms of the loss of moral status. This article challenges Nair-Collins' view in three steps. First, I elaborate on the concept of moral status, claiming that to understand this notion appropriately, one must grasp the distinction between direct and indirect duties. Second, I argue that his understanding of moral status implicit in the Transitivity Argument is faulty since it is not based on a distinction between direct and indirect duties. Third, I show how this flaw in Nair-Collins' argument is grounded in the more general problems between preference utilitarianism and desire fulfillment theory. Finally, I present the constructivist theory of moral status and the associated moral concept of death and explain how this concept challenges the Transitivity Argument. According to my view, brain death constitutes a valid criterion of death since brain death is incompatible with the preserved capacity to have affective attitudes and to value anything.


Assuntos
Morte Encefálica , Status Moral , Humanos , Princípios Morais , Teoria Ética , Dissidências e Disputas
20.
Adv Clin Exp Med ; 2024 Feb 14.
Artigo em Inglês | MEDLINE | ID: mdl-38353505

RESUMO

BACKGROUND: The imbalance between supply and demand for organ donations remains a hot topic for international debate. Brain-dead organ donors (DBDs) constitute the majority of organ donations in Poland. OBJECTIVES: To identify the factors that guided intensivists in qualifying a brain-dead patient as a potential organ donor, and whether the factors that significantly influenced the decision to qualify constituted an actual contraindication. MATERIAL AND METHODS: We performed a retrospective study based on data from the Silesian ICU Registry from 2010-2020 and publicly available information from Poltransplant. We compared the demographic and clinical characteristics of patients diagnosed with brain death who were identified as eligible and ineligible organ donors. RESULTS: Out of 25,465 patients enrolled in the Silesian ICU Registry, brain death was diagnosed in 385 (1.51%) study participants, and 61 of the records were excluded due to data incompleteness. In the remaining group (n = 324), there were 201 men and 123 women. Of them, only 180 study participants were reported as eligible donors (55.5%). Six patients had absolute contraindications to organ donation. CONCLUSIONS: A relatively small number of patients diagnosed with brain death were qualified by intensivists as eligible organ donors, with a limited number of medical factors influencing this decision. This means that other non-medical factors may affect the qualification of DBDs for organ procurement.

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