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2.
Isr Med Assoc J ; 9(22): 486-490, 2020 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-32954694

RESUMO

OBJECTIVES: To investigate the impact of recipient age on the occurrence of rejections, vasculopathy, and mortality after HTx. METHODS: Study population comprised all consecutive 291 patients who underwent HTx between 1991-2016 and were followed at our center. Patients were categorized by age tertiles: < 46 years (mean 31.4 ± 11.7, range 16-45, n=90), 46-57 years (mean 51.4 ± 3.2, range 46-56, n=92), and ≥ 57 years (mean 61.6 ± 3.4, range 57-73, n=109). RESULTS: Patients aged ≥ 57 years were more often males and had more pre-HTx co-morbidities including hypertension, diabetes, dyslipidemia, and history of smoking (P < 0.05) compared to the younger age groups. Kaplan-Meier analysis by age tertiles showed the rates of major rejections and vasculopathy at 15 years were similar among the three age groups. Mortality rates at 15 years were directly related to the age groups (39%, 52%, 62% log-rank, P = 0.01). However, the association between age and mortality was no longer statistically significant after multivariate analysis (hazard ratio 1.01, 95% confidence interval 1.00-1.03). CONCLUSIONS: In a contemporary cohort of patients undergoing HTx, recipient age does not significantly impact the risk of major rejections, vasculopathy, and long-term mortality.


Assuntos
Rejeição de Enxerto/epidemiologia , Transplante de Coração/estatística & dados numéricos , Seleção de Pacientes , Adolescente , Adulto , Fatores Etários , Idoso , Estudos de Coortes , Feminino , Transplante de Coração/mortalidade , Humanos , Estimativa de Kaplan-Meier , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Estudos Retrospectivos , Fatores de Risco , Fatores Sexuais , Fatores de Tempo , Adulto Jovem
3.
Medicine (Baltimore) ; 99(33): e21355, 2020 Aug 14.
Artigo em Inglês | MEDLINE | ID: mdl-32871987

RESUMO

RATIONALE: Coronary artery abnormalities are usually of major significance in clinical cardiology and cardiac surgery departments due to associated myocardial ischemia, myocardial infarction, and sudden cardiac death. Among them, anatomical malformations account for most coronary artery abnormalities. However, hypoplasia of the coronary artery is a rare type of coronary artery without any genetic screening information. PATIENT CONCERNS: A 10-year-old boy suffered severe chest pain, and a subsequent syncope occurred. DIAGNOSIS AND INTERVENTION: The boy complained of significant chest pain with syncope. Computerized tomography (CT) angiography scanning showed that the left coronary artery was dominated by abnormal origins and dramatically narrow artery lesions. Moreover, cardiac magnetic resonance imaging (MRI) confirmed myocardial ischemia. Cardiac catheterization confirmed that this was an extremely rare hypoplastic coronary case. Finally, a mutation was identified in NOTCH1 c.1023C>A for the first time. OUTCOMES: The boy was discharged after completing all examinations and was forbidden to play any kind of sport activity while waiting for heart transplantation. LESSONS: Hypoplastic coronary artery diseases have only been reported within very limited cases. This is the only report that has identified hypoplasia in 3 epicardial major coronary arteries. In addition, this is the first case to provide evidence between NOTCH1 genetic disorder and hypoplastic coronary artery disease in the clinic.


Assuntos
Anomalias dos Vasos Coronários/genética , Receptor Notch1/genética , Criança , Angiografia por Tomografia Computadorizada , Anomalias dos Vasos Coronários/diagnóstico por imagem , Anomalias dos Vasos Coronários/cirurgia , Transplante de Coração , Humanos , Imagem por Ressonância Magnética , Masculino , Mutação
4.
J Heart Lung Transplant ; 39(9): 894-903, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32891266

RESUMO

BACKGROUND: Orthotopic heart transplantation (OHT) recipients may be particularly vulnerable to coronavirus disease 2019 (COVID-19). OHT during the pandemic presents unique challenges in terms of feasibility and safety. METHODS: Chart review was performed for consecutive OHT recipients with COVID-19 and waitlisted patients who underwent OHT from March 1, 2020 to May 15, 2020. RESULTS: Of the approximately 400 OHT recipients followed at our institution, 22 acquired COVID-19. Clinical characteristics included median age 59 (range, 49-71) years, 14 (63.6%) were male, and median time from OHT to infection was 4.6 (2.5-20.6) years. Symptoms included fever (68.2%), gastrointestinal complaints (55%), and cough (46%). COVID-19 was severe or critical in 5 (23%). All patients had elevated inflammatory biomarkers. Immunosuppression was modified in 85% of patients. Most (n = 16, 86.4%) were hospitalized, 18% required intubation, and 14% required vasopressor support. Five patients (23%) expired. None of the patients requiring intubation survived. Five patients underwent OHT during the pandemic. They were all males, ranging from 30 to 59 years of age. Two were transplanted at United Network of Organ Sharing Status 1 or 2, 1 at Status 3, and 2 at Status 4. All were successfully discharged and are alive without allograft dysfunction or rejection. One contracted mild COVID-19 after the index hospitalization. CONCLUSION: OHT recipients with COVID-19 appear to have outcomes similar to the general population hospitalized with COVID-19. OHT during the pandemic is feasible when appropriate precautions are taken. Further study is needed to guide immunosuppression management in OHT recipients affected by COVID-19.


Assuntos
Betacoronavirus , Infecções por Coronavirus/complicações , Rejeição de Enxerto/prevenção & controle , Insuficiência Cardíaca/cirurgia , Transplante de Coração/métodos , Imunossupressão/métodos , Imunossupressores/uso terapêutico , Pneumonia Viral/complicações , Idoso , Infecções por Coronavirus/epidemiologia , Estudos de Viabilidade , Feminino , Insuficiência Cardíaca/complicações , Humanos , Masculino , Pessoa de Meia-Idade , Pandemias , Pneumonia Viral/epidemiologia , Estudos Retrospectivos , Fatores de Risco , Transplante Homólogo , Resultado do Tratamento
5.
Pediatrics ; 146(4)2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-32973120

RESUMO

BACKGROUND: Low socioeconomic status (SES) has emerged as an important risk factor for higher short-term mortality and neurodevelopmental outcomes in children with hypoplastic left heart syndrome and related anomalies; yet little is known about how SES affects these outcomes over the long-term. METHODS: We linked data from the Single Ventricle Reconstruction trial to US Census Bureau data to analyze the relationship of neighborhood SES tertiles with mortality and transplantation, neurodevelopment, quality of life, and functional status at 5 and 6 years post-Norwood procedure (N = 525). Cox proportional hazards regression and linear regression were used to assess the association of SES with mortality and neurodevelopmental outcomes, respectively. RESULTS: Patients in the lowest SES tertile were more likely to be racial minorities, older at stage 2 and Fontan procedures, and to have more complications and fewer cardiac catheterizations over follow-up (all P < .05) compared with patients in higher SES tertiles. Unadjusted mortality was highest for patients in the lowest SES tertile and lowest in the highest tertile (41% vs 29%, respectively; log-rank P = .027). Adjustment for patient birth and Norwood factors attenuated these differences slightly (P = .055). Patients in the lowest SES tertile reported lower functional status and lower fine motor, problem-solving, adaptive behavior, and communication skills at 6 years (all P < .05). These differences persisted after adjustment for baseline and post-Norwood factors. Quality of life did not differ by SES. CONCLUSIONS: Among patients with hypoplastic left heart syndrome, those with low SES have worse neurodevelopmental and functional status outcomes at 6 years. These differences were not explained by other patient or clinical characteristics.


Assuntos
Técnica de Fontan/métodos , Síndrome do Coração Esquerdo Hipoplásico/cirurgia , Classe Social , Cateterismo Cardíaco/estatística & dados numéricos , Criança , Desenvolvimento Infantil , Pré-Escolar , Deficiências do Desenvolvimento/epidemiologia , Escolaridade , Feminino , Técnica de Fontan/mortalidade , Técnica de Fontan/estatística & dados numéricos , Transplante de Coração/estatística & dados numéricos , Humanos , Síndrome do Coração Esquerdo Hipoplásico/complicações , Síndrome do Coração Esquerdo Hipoplásico/etnologia , Síndrome do Coração Esquerdo Hipoplásico/mortalidade , Renda , Recém-Nascido , Masculino , Ocupações , Complicações Pós-Operatórias/epidemiologia , Modelos de Riscos Proporcionais , Qualidade de Vida , Características de Residência , Resultado do Tratamento , Coração Univentricular/mortalidade , Coração Univentricular/cirurgia
6.
Medicine (Baltimore) ; 99(35): e21844, 2020 Aug 28.
Artigo em Inglês | MEDLINE | ID: mdl-32871907

RESUMO

RATIONALE: The heart transplantation is the most important treatment for patients with end-stage severe heart disease who failed to conventional therapy. Post-transplant lymphoproliferative disorder is the second most common malignancy in heart transplant recipients. However, primary central nervous system lymphoma (PCNSL) after heart transplantation is an extremely rare condition. PATIENTS CONCERNS: This report described a 53-year-old male who was diagnosed as PCNSL 17 months after heart transplantation. DIAGNOSES: The patient was admitted to the local hospital presenting with dizziness, headache, and reduced left-sided power and sensation for 1 week. He had a medical history of heart transplantation because of the dilated cardiomyopathy 17 months ago and had a 17-month history of immunosuppressive therapy with tacrolimus. A computed tomography scan of the brain revealed a bulky mass in the right temporal lobe. The emergency intracranial mass resection and cerebral decompression were performed in our hospital. The histopathology of the brain lesions showed diffuse large B-cell lymphoma. A further FDG positron emission tomography-computed tomography scan of the whole body showed no significantly increased metabolic activity in other regions. The final diagnosis of this patient was PCNSL after heart transplantation. INTERVENTIONS: Given the poor health condition, with the patient's consent, the whole brain radiotherapy was performed with supportive care. OUTCOMES: The disease deteriorated rapidly during the period of receiving radiotherapy, and he died within 2 months from the diagnosis. LESSONS: PCNSL after heart transplantation is an extremely rare phenomenon with extremely poor prognosis. We should pay close attention to the heart recipients, especially when the patients present with neurological symptoms and signs. The available treatment options for PCNS-post-transplant lymphoproliferative disorder include the reduction of immunosuppressive drugs, immune-chemotherapy, operation, radiotherapy. However, individual treatments for heart transplant recipients with PCNSL should be based on the performance status and tolerance to treatment, combined with the doctor's experience and supportive care.


Assuntos
Neoplasias Encefálicas/diagnóstico por imagem , Transplante de Coração , Linfoma Difuso de Grandes Células B/diagnóstico por imagem , Humanos , Imunossupressores/uso terapêutico , Masculino , Pessoa de Meia-Idade , Tacrolimo/uso terapêutico , Tomografia Computadorizada por Raios X
7.
JAMA Cardiol ; 5(9): 1048-1052, 2020 Sep 01.
Artigo em Inglês | MEDLINE | ID: mdl-32936254

RESUMO

Importance: Solid organ transplants have declined significantly during the coronavirus disease (COVID-19) pandemic in the US. Limited data exist regarding changes in heart transplant (HT). Objective: To describe national and regional trends in waitlist inactivations, waitlist additions, donor recovery, and HT volume during COVID-19. Design, Setting, and Participants: This descriptive cross-sectional study used publicly available data from the United Network for Organ Sharing and US Centers for Disease Control and Prevention, using 8 prespecified United Network for Organ Sharing regions. Adult (18 years or older) HT candidates listed and deceased donors recovered between January 19 to May 9, 2020. Exposures: COVID-19 pandemic. Main Outcomes and Measures: Changes in waitlist inactivations, waitlist additions, deceased donor recovery, and transplant volumes from the pre-COVID-19 (January 19-March 15, 2020) to the COVID-19 era (March 15-May 9, 2020). Density mapping and linear regression with interrupted time series analysis were used to characterize changes over time and changes by region. Results: During the COVID-19 era, there were 600 waitlist inactivations compared with 343 during the pre-COVID era (75% increase). Waitlist additions decreased from 637 to 395 (37% reduction). These changes were most profound in the Northeast and Great Lakes regions with high rates of COVID-19. Deceased donor recovery decreased by 26% from 1878 to 1395; the most significant decrease occurred in the North Midwest despite low COVID-19 prevalence. Heart transplant volumes were significantly reduced across all regions except the Northwest. The largest decrease was seen in the Northeast where COVID-19 case rates were highest. From the pre-COVID-19 era to the COVID-19 era, there was significant regional variation in waitlist additions (eg, 69% decrease in the Northeast vs 8.5% increase in the South Midwest; P < .001) and deceased donor recovery (eg, 41% decrease in North Midwest vs 16% decrease in South Midwest; P = .02). Conclusions and Relevance: Heart transplant volumes have been significantly reduced in recent months, even in regions with a lower prevalence of COVID-19 cases. This has been accompanied by increased waitlist inactivations, decreased waitlist additions, and decreased donor recovery. Future studies are needed to determine if the COVID-19 pandemic is associated with changes in waitlist mortality.


Assuntos
Betacoronavirus , Infecções por Coronavirus/epidemiologia , Transplante de Coração/estatística & dados numéricos , Pneumonia Viral/epidemiologia , Obtenção de Tecidos e Órgãos/estatística & dados numéricos , Listas de Espera , Adulto , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pandemias , Utilização de Procedimentos e Técnicas , Estados Unidos
8.
Circ Heart Fail ; 13(9): e007516, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32894988

RESUMO

The coronavirus disease 2019 (COVID-19) pandemic imposed severe restrictions on traditional methods of patient care. During the pandemic, the heart failure program at New York-Presbyterian Hospital in New York, NY rapidly and comprehensively transitioned its care delivery model and administrative organization to conform to a new healthcare environment while still providing high-quality care to a large cohort of patients with heart failure, heart transplantation, and left ventricular assist device. In addition to the widespread adoption of telehealth, our program restructured outpatient care, initiating a shared clinic model and introducing a comprehensive remote monitoring program to manage patients with heart failure and heart transplant. All conferences, including administrative meetings, support groups, and educational seminars were converted to teleconferencing platforms. Following the peak of COVID-19, many of the new changes have been maintained, and the program structure will be permanently altered as a lasting effect of this pandemic. In this article, we review the details of our program's transition in the face of COVID-19 and highlight the programmatic changes that will endure.


Assuntos
Cardiologia/organização & administração , Infecções por Coronavirus/epidemiologia , Assistência à Saúde/organização & administração , Insuficiência Cardíaca/terapia , Pneumonia Viral/epidemiologia , Telemedicina/organização & administração , Planejamento Antecipado de Cuidados , Assistência Ambulatorial/organização & administração , Betacoronavirus , Transplante de Coração , Coração Auxiliar , Humanos , Cidade de Nova Iorque/epidemiologia , Profissionais de Enfermagem , Pandemias , Médicos , Papel Profissional , Grupos de Autoajuda , Telecomunicações , Centros de Atenção Terciária/organização & administração , Comunicação por Videoconferência
9.
Rev. Hosp. El Cruce ; (26): 37-45, Ago 2020.
Artigo em Espanhol | LILACS, BINACIS, UNISALUD | ID: biblio-1117091

RESUMO

Se comparte una síntesis de la tesis de investigación que surge del contacto directo con las personas trasplantadas del corazón en el Hospital El Cruce Alta Complejidad en Red Dr. Néstor Carlos Kirchner ­SAMIC de la localidad de Florencio Varela, Provincia de Buenos Aires durante los meses de julio a diciembre de 2012 y enero a diciembre de 2013. La investigación intenta recuperar las valoraciones socio-culturales de los sujetos trasplantados del corazón sobre el grado de accesibilidad a los beneficios y necesidades sociales, el nivel de articulación que existe entre las diferentes esferas del estado, y el grado de articulación entre los diferentes programas sociales de gestión estatal. Se concluye con un análisis de la incidencia que tienen las significaciones enunciadas desde la perspectiva de los propios sujetos tendientes a mejorar las políticas sociales vigentes y diseñar nuevas acciones específicas para abordar la problemática de salud de alta complejidad.


A synthesis of the research thesis that arises from direct contact with heart transplanted patients at the El Cruce Hospital High Complexity in Network is shared Dr. Néstor Carlos Kirchner - SAMIC from the town of Florencio Varela, Province of Buenos Aires during the months of July to December 2012 and January to December 2013. The research tries to recover the socio-cultural evaluations of the heart transplant subjects regarding the degree of accessibility to social benefits and needs, the level of articulation that exists between the different spheres of the state, and the degree of articulation between the different social programs state management. It concludes with an analysis of the incidence of the meanings enunciated from the perspective of the subjects themselves, tending to improve current social policies and design new specific actions to tackle highly complex health problems.


Assuntos
Pacientes , Transplante de Coração , Programas Sociais
10.
Artigo em Alemão | MEDLINE | ID: mdl-32736384

RESUMO

The outcome after heart and lung transplantation has improved significantly. Consequently, many patients are admitted to the hospital for routine surgical interventions that are initially non-transplant-specific. Some disorders lead to hospital admissions that affect other organ systems due to late consequences of the underlying disease or can be seen as early and late complications of the transplantation itself. Many of these surgical interventions are certainly carried out in the responsible transplant centre. Some surgeries are also performed in hospitals that do not primarily transplant and do not regularly care for heart and lung transplant patients. In these situations, the understanding of the physiology of the transplanted heart and lung, the consequences of the underlying disease and the post-transplant treatment with its peculiarities and risks is paramount. The anaesthetic management of these patients requires preoperative risk stratification and perioperative anaesthetic planning, but also responsibility for a suitable post-operative monitoring. This review article deals with the special anaesthetic consideration in patients after heart and lung transplantation.


Assuntos
Anestésicos , Transplante de Coração , Transplante de Pulmão , Humanos
11.
Medicina (B Aires) ; 80(4): 324-328, 2020.
Artigo em Espanhol | MEDLINE | ID: mdl-32841135

RESUMO

Neurological complications in orthotopic heart transplantation represent a major cause of morbidity and mortality despite successful transplantation. The aim of our study was to evaluate neurological complications on the outcome of patients with heart transplantation. We retrospectively studied 193 adult patients (aged = 18 years) who underwent heart transplant at Hospital Italiano in Buenos Aires from November 2014 to August 2018. We evaluated demographic and clinical vari ables and outcome of patients with and without neurological complications. We included 193 patients with a mean age of 51 ± 12 years of which 74% (n = 143) were men. The two most frequent causes that led to heart transplantation were idiopathic cardiomyopathy in 34% (n = 65) and ischemic cardiomyopathy in 29% (n = 56). Hemodynamic instability was present at the moment of transplant in 92% (n = 176) of the cases. Central neurological complications in the first week post-transplant occurred in 12% (n = 23). The most frequent were: encephalopathy (5%), subdural hematoma (2%), subarachnoid hemorrhage (2%), seizures (2%) and ischemic stroke (1%). Peripheral neuropathy was observed in 4% of cases. Hospital mortality was 11% (n = 22) and 88% (n = 170) was discharged at home. Those who presented central neurological complications had higher in-hospital mortality compared to those who did not (32% vs. 9%, p = 0.002).


Assuntos
Transplante de Coração , Acidente Vascular Cerebral , Adulto , Feminino , Mortalidade Hospitalar , Humanos , Masculino , Pessoa de Meia-Idade , Complicações Pós-Operatórias , Estudos Retrospectivos , Convulsões
12.
Can Bull Med Hist ; 37(2): 461-489, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32822548

RESUMO

This paper uses the history of kidney transplantation in South Africa as a lens through which to write a racialized, micro history that illustrates the politics of medical discoveries and medical research at one of South Africa's most prestigious medical research universities, the University of the Witwatersrand (Wits) in Johannesburg. Between 1966 and the 1980s, the Wits team became the most advanced and prolific kidney transplant unit in the country. Yet the racist, oppressive Apartheid system fundamentally shaped these developments. Transplantation, as this paper shows, became an elite medical procedure, performed by a select group of white doctors on mostly white patients. For these doctors, transplantation showed their medical prowess and displayed the technical advancements they were able to make in research and clinical practice as they strove to position South Africa as a significant international player in medical research, despite academic boycotts and increasing sanctions. Transplantation became a symbol of white supremacy in a country where the black majority were excluded from anything but the most basic health care.


Assuntos
Centros Médicos Acadêmicos/história , Apartheid/história , Ética Médica/história , Transplante de Rim/história , Racismo/história , Grupo com Ancestrais do Continente Africano , Pesquisa Biomédica/ética , Pesquisa Biomédica/história , Grupo com Ancestrais do Continente Europeu , Transplante de Coração/ética , Transplante de Coração/história , História do Século XX , Humanos , Imunossupressão/história , Transplante de Rim/ética , África do Sul
13.
Nat Commun ; 11(1): 4289, 2020 08 27.
Artigo em Inglês | MEDLINE | ID: mdl-32855397

RESUMO

Older organs represent an untapped potential to close the gap between demand and supply in organ transplantation but are associated with age-specific responses to injury and increased immunogenicity, thereby aggravating transplant outcomes. Here we show that cell-free mitochondrial DNA (cf-mt-DNA) released by senescent cells accumulates with aging and augments immunogenicity. Ischemia reperfusion injury induces a systemic increase of cf-mt-DNA that promotes dendritic cell-mediated, age-specific inflammatory responses. Comparable events are observed clinically, with the levels of cf-mt-DNA elevated in older deceased organ donors, and with the isolated cf-mt-DNA capable of activating human dendritic cells. In experimental models, treatment of old donor animals with senolytics clear senescent cells and diminish cf-mt-DNA release, thereby dampening age-specific immune responses and prolonging the survival of old cardiac allografts comparable to young donor organs. Collectively, we identify accumulating cf-mt-DNA as a key factor in inflamm-aging and present senolytics as a potential approach to improve transplant outcomes and availability.


Assuntos
DNA Mitocondrial/efeitos adversos , Dasatinibe/farmacologia , Inflamação/prevenção & controle , Transplante de Órgãos/métodos , Quercetina/farmacologia , Adulto , Envelhecimento/fisiologia , Animais , Diferenciação Celular , Ácidos Nucleicos Livres , Senescência Celular/efeitos dos fármacos , Senescência Celular/fisiologia , Citocinas/metabolismo , DNA Mitocondrial/metabolismo , Células Dendríticas/imunologia , Células Dendríticas/fisiologia , Transplante de Coração/efeitos adversos , Transplante de Coração/métodos , Humanos , Inflamação/etiologia , Masculino , Camundongos Endogâmicos C57BL , Camundongos Endogâmicos DBA , Pessoa de Meia-Idade , Transplante de Órgãos/efeitos adversos , Traumatismo por Reperfusão/genética , Traumatismo por Reperfusão/imunologia , Doadores de Tecidos
15.
Transplantation ; 104(9): 1890-1898, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32826843

RESUMO

BACKGROUND: Ex situ heart perfusion (ESHP) limits ischemic periods and enables continuous monitoring of donated hearts; however, a validated assessment method to predict cardiac performance has yet to be established. We compare biventricular contractile and metabolic parameters measured during ESHP to determine the best evaluation strategy to estimate cardiac function following transplantation. METHODS: Donor pigs were assigned to undergo beating-heart donation (n = 9) or donation after circulatory death (n = 8) induced by hypoxia. Hearts were preserved for 4 hours with ESHP while invasive and noninvasive (NI) biventricular contractile, and metabolic assessments were performed. Following transplantation, hearts were evaluated at 3 hours of reperfusion. Spearman correlation was used to determine the relationship between ESHP parameters and posttransplant function. RESULTS: We performed 17 transplants; 14 successfully weaned from bypass (beating-heart donation versus donation after circulatory death; P = 0.580). Left ventricular invasive preload recruitable stroke work (PRSW) (r = 0.770; P = 0.009), NI PRSW (r = 0.730; P = 0.001), and NI maximum elastance (r = 0.706; P = 0.002) strongly correlated with cardiac index (CI) following transplantation. Right ventricular NI PRSW moderately correlated to CI following transplantation (r = 0.688; P = 0.003). Lactate levels were weakly correlated with CI following transplantation (r = -0.495; P = 0.043). None of the echocardiography measurements correlated with cardiac function following transplantation. CONCLUSIONS: Left ventricular functional parameters, especially ventricular work and reserve, provided the best estimation of myocardial performance following transplantation. Furthermore, simple NI estimates of ventricular function proved useful in this setting. Right ventricular and metabolic measurements were limited in their ability to correlate with myocardial recovery. This emphasizes the need for an ESHP platform capable of assessing myocardial contractility and suggests that metabolic parameters alone do not provide a reliable evaluation.


Assuntos
Transplante de Coração/métodos , Preservação de Órgãos/métodos , Perfusão , Doadores de Tecidos , Função Ventricular Esquerda/fisiologia , Animais , Ecocardiografia , Masculino , Contração Miocárdica , Miocárdio/metabolismo , Suínos
16.
J Card Surg ; 35(8): 1802-1810, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32652710

RESUMO

BACKGROUND AND AIM OF THE STUDY: In developed countries, the shortage of viable donors is the main limiting factor of heart transplantation. The aim of this study is to determine whether the same reality applies to Brazil. METHODS: Between January 2012 and December 2014, 299 adult heart donor offers were studied in terms of donor profiles and reasons for refusal. The European donor scoring system was calculated, being high-risk donors defined as more than 17 points. The donor scoring system was used to objectively determine the donor profile and correlate with donor acceptance and posttransplant primary graft dysfunction and recipient survival. Cox proportional hazard model was used in determining the predictors of long-term mortality. RESULTS: The rates of donor acceptance and heart transplants performed were 45.8% and 19.3%, respectively. Reasons for refusal were mostly nonmedical (53.7%). The majority of donors were classified as high-risk (65.5%). Hearts from high-risk donors did not impact primary graft dysfunction (14.3% vs 10%; P = .6), neither long-term survival (P = .4 by logrank test). Recipient's age was greater than 50 years (hazard ratio, 6.02; 95% confidence interval, 2.41-16.08; P < .0001) and was the only predictor of long-term mortality. CONCLUSIONS: The shortage of donors is not the main limiting factor of heart transplantation in the Mid-West of Brazil. Nonmedical issues represent the main reason for organ discard. Most of the donors are classified as high risk which indicates that an expanded donor pool is a routine practice in our region, and donor scoring does not seem to influence to proceed with the transplant.


Assuntos
Transplante de Coração , Doadores de Tecidos/provisão & distribução , Brasil/epidemiologia , Humanos
17.
J Card Surg ; 35(8): 1778-1786, 2020 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-32667067

RESUMO

BACKGROUND: Ventricular assist devices (VADs) are commonly employed as a bridge to transplantation for heart failure. The full effects of VADs on transplantation rates are not fully understood. We sought to compare transplantation rates stratified by age and VAD status. METHODS: Using the Organ Procurement and Transplantation Network (OPTN) database, we investigated the impact of age and VAD status on heart allocation rates among all transplant-eligible patients from January 2005 to September 2018. Patients were grouped based on the presence (+) or absence (-) of a VAD as well as age (<45, 45-65, and >65 years). Demographics were compared with a multivariate competing risk analysis that yielded risk-adjusted subdistribution hazard ratios (SHR). RESULTS: Among the 50 602 total waitlist candidates, 18 271 patients with a VAD had higher rates of diabetes and cerebrovascular disease at waitlist entry. Multivariate analysis found statistically significant lower rates of transplantation for all (+)VAD groups compared with age-matched (-)VAD counterparts, with the 45- to 65-year-old (+)VAD group having the lowest transplantation rate (SHR = 0.62; P < .0005). Among (-)VAD patients, transplantation rates increased with increase in age. CONCLUSIONS: There is a statistically significant reduced rate of transplantation for patients with a VAD compared with those without a VAD, with the lowest rate among those of ages 45 to 65 years with a VAD. The increasing prevalence of this demographic and the deprioritization of VADs in the new heart allocation criteria have the potential to further exacerbate this difference.


Assuntos
Transplante de Coração , Coração Auxiliar , Listas de Espera , Idoso , Feminino , Transplante de Coração/estatística & dados numéricos , Humanos , Masculino , Pessoa de Meia-Idade , Análise Multivariada
18.
Kardiologiia ; 60(6): 880, 2020 Jul 07.
Artigo em Russo | MEDLINE | ID: mdl-32720616

RESUMO

Aim To evaluate incidence of arterial hypertension (AH) in the posttransplantation period and to identify risk factors for this complication.Materials and methods From January, 2010 through December, 2017, 96 heart transplantations (HT) (70 men and 26 women aged 46.5±13.9 years) were performed. During the first month following HT, 8 recipients died and were excluded from the analysis. The retrospective evaluation of results included 88 patients followed up for more than one year.Results For the entire post-HT period (maximum 92 months), AH was observed in 75 of 88 (85%) recipients. Post-HT AH was correlated with male gender (r=0.24; p=0.031), history of smoking before HT (r=0.45; p<0.001), history of ischemic heart disease (IHD) (r=0.28; p=0.01), older age (r=0.35; p=0.001), higher body weight index (r=0.37; p=0.0005), creatinine level (r=0.37; p=0.001), and low-density lipoprotein cholesterol level (r=0.27; p=0.04). Interrelations with other AH risk factors were not found. Most patients developed AH within the first two years after HT. During the first year, AH was diagnosed in 60% (53 of 88) of patients (relapse, 85% (n=29); newly diagnosed, 45% (n=24), p=0.0003). At two years, AH was detected in 79% (46 of 58) of patients (relapse, 53% (n=18); newly diagnosed, 53% (n=28), p=0.9). All recipients received an adequate antihypertensive therapy. 40-63% of patients required a single-drug therapy at different points of follow-up; from 29 to 45% of patients required a two-drug therapy, and 5-15% of patients required three or more drugs. During all 5 years of treatment, most patients used angiotensin-converting enzyme (ACE) inhibitors or angiotensin II receptor blockers (ARBs) (70-87%) and slow calcium channel blockers (SCCB) (48-53%). The presence of AH following HT was associated with development of all cardiovascular events (CVE; r=0.31; p=0.012) whereas persistent AH, which required a combination antihypertensive treatment, was associated with a high mortality (r=0.61; p=0.015).Conclusion AH is a frequent complication of HT (85%), which is newly diagnosed in most patients during the first two years. AH incidence was higher for male recipients with a history of IHD, hypertension, and smoking. Approximately half of patients required only a single-drug antihypertensive therapy. After HT, the most frequently prescribed drugs included ACE inhibitors or ARBs and SCCBs (70-87% and 48-53%, respectively, depending on the time elapsed after HT). Persistent AH requiring a treatment with two or more antihypertensive drugs was associated with development of all CVEs and a higher long-term mortality.


Assuntos
Transplante de Coração , Hipertensão , Adulto , Inibidores da Enzima Conversora de Angiotensina , Anti-Hipertensivos , Feminino , Transplante de Coração/efeitos adversos , Humanos , Hipertensão/etiologia , Masculino , Pessoa de Meia-Idade , Estudos Retrospectivos
19.
Front Immunol ; 11: 1392, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-32612614

RESUMO

Since December 2019, the ongoing coronavirus disease 2019 (COVID-19) pandemic has significantly affected solid organ transplantation (SOT) worldwide and has become a threat to the lives of SOT recipients. Here, we have reviewed, condensed, and organized the available information on COVID-19 to provide recommendations to transplant healthcare workers. Our review of reported cases shows that the symptoms of SOT patients with COVID-19 are similar to those of the normal population, but their severity and outcomes are worse. Thus far, there is no evidence that severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) directly causes permanent damage to kidney, liver, or heart allografts.


Assuntos
Infecções por Coronavirus/patologia , Transplante de Coração/efeitos adversos , Transplante de Rim/efeitos adversos , Transplante de Fígado/efeitos adversos , Pneumonia Viral/patologia , Adulto , Idoso , Betacoronavirus , Infecções por Coronavirus/transmissão , Feminino , Coração/virologia , Humanos , Rim/patologia , Rim/virologia , Fígado/patologia , Fígado/virologia , Masculino , Pessoa de Meia-Idade , Miocárdio/patologia , Pandemias , Pneumonia Viral/transmissão , Transplantados/estatística & dados numéricos
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