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1.
Sci Rep ; 14(1): 1898, 2024 01 22.
Artigo em Inglês | MEDLINE | ID: mdl-38253660

RESUMO

Escalating environmental threats to coral reefs coincides with global advancements in coral restoration programs. To improve long-term efficacy, practitioners must consider incorporating genotypes resilient to ocean warming and disease while maintaining genetic diversity. Identifying such genotypes typically occurs under long-term exposures that mimic natural stressors, but these experiments can be time-consuming, costly, and introduce tank effects, hindering scalability for hundreds of nursery genotypes used for outplanting. Here, we evaluated the efficacy of the acute Coral Bleaching Automated Stress System (CBASS) against long-term exposures on the bleaching response of Acropora cervicornis, the dominant restoration species in Florida's Coral Reef. Comparing bleaching metrics, Fv/Fm, chlorophyll, and host protein, we observed similar responses between the long-term heat and the CBASS treatment of 34.3 °C, which was also the calculated bleaching threshold. This suggests the potential of CBASS as a rapid screening tool, with 90% of restoration genotypes exhibiting similar bleaching tolerances. However, variations in acute bleaching phenotypes arose from measurement timing and experiment heat accumulation, cautioning against generalizations solely based on metrics like Fv/Fm. These findings identify the need to better refine the tools necessary to quickly and effectively screen coral restoration genotypes and determine their relative tolerance for restoration interventions.


Assuntos
Antozoários , Animais , Antozoários/genética , Recifes de Corais , Benchmarking , Bioensaio , Clorofila
2.
S Afr Med J ; 113(4): e313, 2023 03 08.
Artigo em Inglês | MEDLINE | ID: mdl-37283156

RESUMO

BACKGROUND: South Africa (SA) is one of the most financially unequal countries in the world. This situation is highlighted by disparate access to healthcare, particularly provision of kidney replacement therapy (KRT). Unlike the private sector, public sector access to KRT is highly rationed, and patient selection is based on suitability for transplantation and capacity. OBJECTIVES: To investigate the state of the KRT service in Eastern Cape Province, SA, by analysing access to and provision of KRT in the province for individuals with end-stage kidney disease, as well as disparities between the private and public healthcare systems. METHODS: This was a retrospective descriptive study to examine KRT provision and temporal trends in the Eastern Cape. Data were obtained from the South African Renal Registry and the National Transplant Waiting List. KRT provision was compared between the three main referral centres, in Gqeberha (formerly Port Elizabeth), East London and Mthatha, and between the private and public healthcare systems. RESULTS: There were 978 patients receiving KRT in the Eastern Cape, with an overall treatment rate of 146 per million population (pmp). The treatment rate for the private sector was 1 435 pmp, compared with 49 pmp in the public sector. Patients treated in the private sector were older at initiation of KRT (52 v. 34 years), and more likely to be male, to be HIV positive, and to receive haemodialysis as their KRT modality. Peritoneal dialysis was more commonly used in Gqeberha and East London as the first and subsequent KRT modality, compared with Mthatha. There were no patients from Mthatha on the transplant waiting list. There were no waitlisted HIV-positive patients in the public sector in East London, compared with 16% of the public sector patients in Gqeberha. The kidney transplant prevalence rate was 58 pmp in the private sector and 19 pmp in the public sector, with a combined prevalence of 22 pmp, constituting 14.9% of all patients on KRT. We estimated the shortfall of KRT provision in the public sector to be ~8 606 patients. CONCLUSION: Patients in the private sector were 29 times more likely to access KRT than their public sector counterparts, who were on average 18 years younger at initiation of KRT, probably reflecting selection bias in an overburdened public health system. Transplantation rates were low in both sectors, and lowest in Mthatha. A large public sector KRT provision gap exists in the Eastern Cape and needs to be addressed urgently.


Assuntos
Falência Renal Crônica , Terapia de Substituição Renal , Humanos , Masculino , Feminino , África do Sul/epidemiologia , Estudos Retrospectivos , Falência Renal Crônica/epidemiologia , Falência Renal Crônica/terapia , Diálise Renal
3.
Int J Pharm ; 630: 122466, 2023 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-36493969

RESUMO

The standard of care for patients with Adrenal Insufficiency (AI) is suboptimal. Administration of hydrocortisone three times a day produces plasma cortisol fluctuations associated with negative health outcomes. Furthermore, there is a high inter-individual variability in cortisol need, necessitating a personalized approach. It is hypothesized that a personalized, sustained release formulation would enhance the pharmacotherapy by mimicking the physiological cortisol plasma concentration at a higher level. Therefore, a novel 24 h sustained release 3D printed (3DP) hydrocortisone formulation has been developed (M3DICORT) by coupling hot-melt extrusion with fused deposition modeling. A uniform drug distribution in the 3DP tablets is demonstrated by a content of 101.66 ± 1.60 % with an acceptance value of 4.01. Furthermore, tablets had a stable 24 h dissolution profile where the intra-batch standard deviation was ± 2.8 % and the inter-batch standard deviation was ± 6.8 %. Tablet height and hydrocortisone content were correlated (R2 = 0.996), providing a tool for easy dose personalization. Tablets maintained critical quality attributes, such as dissolution profile (f2 > 60) and content uniformity after process transfer from a single-screw extruder to a twin-screw extruder. Impurities were observed in the final product which should be mitigated before clinical assessment. To our knowledge, M3DICORT is the first 3DP hydrocortisone formulation specifically developed for AI.


Assuntos
Insuficiência Adrenal , Hidrocortisona , Humanos , Preparações de Ação Retardada/uso terapêutico , Insuficiência Adrenal/tratamento farmacológico , Comprimidos , Impressão Tridimensional , Liberação Controlada de Fármacos , Tecnologia Farmacêutica
4.
Cogitare Enferm. (Online) ; 28: e83871, 2023. tab, graf
Artigo em Português | LILACS-Express | LILACS, BDENF - Enfermagem | ID: biblio-1421307

RESUMO

RESUMO Objetivo: descrever a implantação do Sistema de Classificação de Pacientes e o dimensionamento do pessoal de enfermagem em unidade de internação pediátrica. Método: estudo descritivo, transversal e retrospectivo, realizado em um hospital universitário do Centro-Oeste do Brasil. Depois da implantação do Sistema de Classificação de Pacientes pediátricos, compilaram-se dados das classificações do nível de complexidade assistencial (N=4.639) entre pacientes (n=608) internados de janeiro a dezembro de 2019. Empregou-se análise estatística descritiva, incluindo metodologia própria para dimensionamento de pessoal. Resultados: houve prevalência de pacientes de cuidados intermediários. Pelo dimensionamento do pessoal, constatou-se superávit (+10) de trabalhadores de nível médio, e o quantitativo de enfermeiros projetado (seis) era compatível com o disponível. Conclusão: a implantação/emprego estratégico do Sistema de Classificação de Pacientes foi indispensável para a previsão de pessoal de enfermagem pediátrica, considerando que o superávit de pessoal constatado deve ser apreciado com cautela.


ABSTRACT Objective: to describe the implementation of the Patient Classification System and the dimensioning of the nursing staff in a pediatric inpatient unit. Method: a descriptive, cross-sectional, and retrospective study, carried out at a university hospital in the Midwest of Brazil. After the implementation of the Pediatric Patient Classification System, we compiled data from the classifications of the level of care complexity (N=4,639) among patients (n=608) admitted from January to December 2019. Descriptive statistical analysis was employed, including proprietary methodology for staff sizing. Results: there was a prevalence of intermediate care patients. According to the staff dimensioning, there was a surplus (+10) of mid-level workers, and the projected number of nurses (six) was compatible with the available number. Conclusion: the strategic implementation/employment of the Patient Classification System was indispensable for the pediatric nursing staffing forecast, considering that the staffing surplus found should be appreciated with caution.


RESUMEN Objetivo: describir la implantación del Sistema de Clasificación de Pacientes y el dimensionamiento del personal de enfermería en una unidad de hospitalización pediátrica. Método: estudio descriptivo, transversal, retrospectivo, realizado en un hospital universitario del Centro-Oeste de Brasil. Tras la implantación del Sistema de Clasificación de Pacientes Pediátricos, se recopilaron los datos de las clasificaciones del nivel de complejidad asistencial (N=4.639) entre los pacientes (n=608) ingresados de enero a diciembre de 2019. Se utilizó el análisis estadístico descriptivo, incluida nuestra propia metodología de dimensionamiento del personal. Resultados: prevalencia de pacientes de cuidados intermedios. En cuanto a la dimensión del personal, se constató un superávit (+10) de trabajadores de nivel medio, y el número de enfermeros proyectado (seis) era compatible con el disponible. Conclusión: la implementación/empleo estratégico del Sistema de Clasificación de Pacientes fue indispensable para la previsión del personal de enfermería pediátrica, considerando que el excedente de personal encontrado debe ser apreciado con cautela.

5.
S Afr Med J ; 113(12): 24, 2023 Dec 04.
Artigo em Inglês | MEDLINE | ID: mdl-38525626

RESUMO

Postpartum haemorrhage is the leading cause of preventable maternal mortality in South Africa. In a significant breakthrough in the management of PPH, the E-MOTIVE trial found that a multifaceted health service intervention reduced severe PPH after vaginal delivery by 60% in 78 hospitals in Nigeria, Kenya, Tanzania and SA. The E-MOTIVE approach comprises objective blood loss measurement monitored every 15 minutes during the first hour after delivery to detect PPH early and trigger a bundle of first-line treatments, including massaging the uterus, oxytocin infusion, tranexamic acid infusion, intravenous crystalloid fluids, examination for the cause, emptying the bladder and, if necessary, escalation of care. E-MOTIVE was integrated into the existing Essential Steps in Managing Obstetric Emergencies algorithm. Certain research-related elements of the trial setting cannot be replicated in routine practice. Therefore, we need to develop local strategies to ensure the essential clinical elements of the intervention are implemented. Potential strategies include incorporating the E-MOTIVE principles into national guidelines, ongoing training strategies and ensuring all facilities are equipped with necessary medication, equipment and delegations. This breakthrough intervention provides hope for women in SA, and requires a purposeful, co-ordinated implementation strategy on a national scale to reach all levels of the health service.


Assuntos
Ocitócicos , Hemorragia Pós-Parto , Feminino , Humanos , Gravidez , Parto Obstétrico , Ocitócicos/uso terapêutico , Ocitocina/uso terapêutico , Hemorragia Pós-Parto/diagnóstico , Hemorragia Pós-Parto/terapia , África do Sul , Ensaios Clínicos como Assunto
6.
S Afr Med J ; 112(12): 897-900, 2022 12 01.
Artigo em Inglês | MEDLINE | ID: mdl-36472320

RESUMO

Organ and tissue donation depends on non-transplant clinicians to identify and timeously refer potential donors and to counsel families compassionately about the prognosis at end of life. Organ donation referral is often felt to be beyond the capacity of district-level hospital services. In this case series, we report on four referrals from a geographically remote, public sector district-level hospital, and review the identification, referral and consent process of potential donors after brain death, and also donors after circulatory death. For the one successfully consented donor we report on the donor work-up and management, and the outcome of the organ recovery and organ allocation process.


Assuntos
Transplante de Órgãos , Obtenção de Tecidos e Órgãos , Humanos , África do Sul , Doadores de Tecidos , Docentes
7.
Neuroimage ; 260: 119455, 2022 10 15.
Artigo em Inglês | MEDLINE | ID: mdl-35809888

RESUMO

Complex cognitive abilities are thought to arise from the ability of the brain to adaptively reconfigure its internal network structure as a function of task demands. Recent work has suggested that this inherent flexibility may in part be conferred by the widespread projections of the ascending arousal systems. While the different components of the ascending arousal system are often studied in isolation, there are anatomical connections between neuromodulatory hubs that we hypothesise are crucial for mediating key features of adaptive network dynamics, such as the balance between integration and segregation. To test this hypothesis, we estimated the strength of structural connectivity between key hubs of the noradrenergic and cholinergic arousal systems (the locus coeruleus [LC] and nucleus basalis of Meynert [nbM], respectively). We then asked whether the strength of structural LC and nbM inter-connectivity was related to individual differences in the emergent, dynamical signatures of functional integration measured from resting state fMRI data, such as network and attractor topography. We observed a significant positive relationship between the strength of white-matter connections between the LC and nbM and the extent of network-level integration following BOLD signal peaks in LC relative to nbM activity. In addition, individuals with denser white-matter streamlines interconnecting neuromodulatory hubs also demonstrated a heightened ability to shift to novel brain states. These results suggest that individuals with stronger structural connectivity between the noradrenergic and cholinergic systems have a greater capacity to mediate the flexible network dynamics required to support complex, adaptive behaviour. Furthermore, our results highlight the underlying static features of the neuromodulatory hubs can impose some constraints on the dynamic features of the brain.


Assuntos
Núcleo Basal de Meynert , Encéfalo , Colinérgicos , Humanos , Locus Cerúleo/diagnóstico por imagem , Imageamento por Ressonância Magnética/métodos
8.
S Afr J Surg ; 60(1): 55-58, 2022 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-35451271

RESUMO

BACKGROUND: The impact of the COVID-19 pandemic on transplantation is multifactorial. This study reports on its influence on deceased donation for transplantation in the Western Cape. METHODS: The volume of referrals and those who were consented for organ donation in the province in the pre-pandemic period of May 2017 to February 2020 were compared to those of the initial pandemic period (March through December 2020). RESULTS: Prior to the pandemic, there were 201 deceased donor referrals in the Western Cape province - 152 (75.6%) and 49 (24.4%) in public and private sectors, respectively. The mean referral rates ranged between 59-69 referrals per year, translating into a monthly rate of 4.8 (range 2.8-5.8). During the first 10 months of the pandemic, there were 18 referrals - 12 (66.7%) and six (33.3%) in the public and private sectors; a decrease of 63%, with a mean monthly referral rate of 1.8. The overall consent rate prior to the pandemic in the public and private sectors was 36.6% (38% and 27%, respectively) with an increase to 44.4% (37.5% and 62.5%) during the pandemic. CONCLUSION: Despite a 10% increase in consent rate for deceased donation during the COVID-19 pandemic, there was a significant decrease in the number of potential donors referred. Strategies to improve organ donation and transplantation during and after the COVID-19 pandemic are required.


Assuntos
COVID-19 , Transplante de Órgãos , COVID-19/epidemiologia , Humanos , Consentimento Livre e Esclarecido , Pandemias , Encaminhamento e Consulta , África do Sul/epidemiologia , Doadores de Tecidos
9.
Microbiol Resour Announc ; 11(2): e0119921, 2022 Feb 17.
Artigo em Inglês | MEDLINE | ID: mdl-35175123

RESUMO

Stony coral tissue loss disease (SCTLD) is decimating Caribbean corals. Here, through the metatranscriptomic assembly and annotation of two alphaflexivirus-like strains, we provide genomic evidence of filamentous viruses in SCTLD-affected, -exposed, and -unexposed coral colonies. These data will assist in clarifying the roles of viruses in SCTLD.

10.
Nat Commun ; 12(1): 6107, 2021 Oct 20.
Artigo em Inglês | MEDLINE | ID: mdl-34671016

RESUMO

Polycyclic aromatic hydrocarbons (PAHs) play an important role in interstellar chemistry and are subject to high energy photons that can induce excitation, ionization, and fragmentation. Previous studies have demonstrated electronic relaxation of parent PAH monocations over 10-100 femtoseconds as a result of beyond-Born-Oppenheimer coupling between the electronic and nuclear dynamics. Here, we investigate three PAH molecules: fluorene, phenanthrene, and pyrene, using ultrafast XUV and IR laser pulses. Simultaneous measurements of the ion yields, ion momenta, and electron momenta as a function of laser pulse delay allow a detailed insight into the various molecular processes. We report relaxation times for the electronically excited PAH*, PAH+* and PAH2+* states, and show the time-dependent conversion between fragmentation pathways. Additionally, using recoil-frame covariance analysis between ion images, we demonstrate that the dissociation of the PAH2+ ions favors reaction pathways involving two-body breakup and/or loss of neutral fragments totaling an even number of carbon atoms.

11.
Sci Rep ; 11(1): 12592, 2021 06 15.
Artigo em Inglês | MEDLINE | ID: mdl-34131245

RESUMO

Gastrointestinal symptoms (GIS) are common in kidney transplant candidates and recipients and may be worsened by HIV. Objective: To determine the frequency and severity of GIS in HIV-positive kidney transplant recipients from HIV-positive donors, and those waiting to receive one. A GIS rating scale (GSRS) was completed by 76 participants at baseline and at 6 months. GIS frequency was defined as having at least one symptom (GSRS > 1). Severity was indicated by the GSRS score. Transplant candidates: GIS frequency was 88.9% and 86.3% at baseline and 6 months respectively. Indigestion was the most frequent (79.6% and 66.7% at baseline and 6 months), and severe GIS (GSRS 2.3). Women reported global mean (p = 0.030) severity significantly more than men. Transplant recipients: GIS frequency was 95.2% and 76.2% at baseline and 6 months respectively. At both assessment points, indigestion occurred most frequently (85.7% and 61.9% respectively). Highest GSRS was reported for indigestion at baseline (2.33) and at 6 months (1.33). Waist circumference (WC) was positively associated with the severity of constipation GSRS. GIS are common in both groups, especially indigestions. WC in transplant recipients should be monitored.


Assuntos
Gastroenteropatias/terapia , Infecções por HIV/terapia , Nefropatias/terapia , Transplante de Rim/efeitos adversos , Adulto , Feminino , Gastroenteropatias/complicações , Gastroenteropatias/patologia , Gastroenteropatias/virologia , Trato Gastrointestinal/patologia , Trato Gastrointestinal/virologia , Infecções por HIV/complicações , Infecções por HIV/virologia , Humanos , Imunossupressores , Nefropatias/complicações , Nefropatias/virologia , Masculino , Pessoa de Meia-Idade , Qualidade de Vida , Índice de Gravidade de Doença , Inquéritos e Questionários , Doadores de Tecidos , Transplantados
13.
Clin Res Cardiol ; 110(8): 1259-1269, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33555408

RESUMO

INTRODUCTION: Peripartum cardiomyopathy (PPCM) is an important cause of pregnancy-associated heart failure worldwide. Although a significant number of women recover their left ventricular (LV) function within 12 months, some remain with persistently reduced systolic function. METHODS: Knowledge gaps exist on predictors of myocardial recovery in PPCM. N-terminal pro-brain natriuretic peptide (NT-proBNP) is the only clinically established biomarker with diagnostic value in PPCM. We aimed to establish whether NT-proBNP could serve as a predictor of LV recovery in PPCM, as measured by LV end-diastolic volume (LVEDD) and LV ejection fraction (LVEF). RESULTS: This study of 35 women with PPCM (mean age 30.0 ± 5.9 years) had a median NT-proBNP of 834.7 pg/ml (IQR 571.2-1840.5) at baseline. Within the first year of follow-up, 51.4% of the cohort recovered their LV dimensions (LVEDD < 55 mm) and systolic function (LVEF > 50%). Women without LV recovery presented with higher NT-proBNP at baseline. Multivariable regression analyses demonstrated that NT-proBNP of ≥ 900 pg/ml at the time of diagnosis was predictive of failure to recover LVEDD (OR 0.22, 95% CI 0.05-0.95, P = 0.043) or LVEF (OR 0.20 [95% CI 0.04-0.89], p = 0.035) at follow-up. CONCLUSIONS: We have demonstrated that NT-proBNP has a prognostic value in predicting LV recovery of patients with PPCM. Patients with NT-proBNP of ≥ 900 pg/ml were less likely to show any improvement in LVEF or LVEDD. Our findings have implications for clinical practice as patients with higher NT-proBNP might require more aggressive therapy and more intensive follow-up. Point-of-care NT-proBNP for diagnosis and risk stratification warrants further investigation.


Assuntos
Cardiomiopatias/sangue , Peptídeo Natriurético Encefálico/sangue , Fragmentos de Peptídeos/sangue , Período Periparto , Adulto , Biomarcadores/sangue , Cardiomiopatias/fisiopatologia , Diástole , Feminino , Humanos , Valor Preditivo dos Testes , Gravidez , Prognóstico , Volume Sistólico , Sístole
14.
Support Care Cancer ; 29(5): 2481-2491, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-32935205

RESUMO

INTRODUCTION: Caring for a significant other during cancer treatment can be demanding. Little is known about the well-being of informal caregivers of patients with colon cancer. This study aims to examine informal caregiver well-being during adjuvant chemotherapy for colon cancer. MATERIAL AND METHODS: This exploratory longitudinal, prospective study measured the course of informal caregiver burden (Self-Perceived Pressure of Informal Care), distress (Hospital Anxiety and Depression Scale), health-related quality of life (RAND-36), marital satisfaction (Maudsley Marital Questionnaire), social support (Social Support List - Discrepancies), fatigue (Abbreviated Fatigue Questionnaire), and self-esteem (Caregiver Reaction Assessment) before (T0), during (T1), and after (T2) patients' treatment. RESULTS: Baseline data of 60 out of 76 eligible dyads (79%) were analyzed. Mean levels of informal caregiver burden and distress improved significantly over time, as did their health-related quality of life and perceived social support. At baseline, 30% and 26.7% of informal caregivers reported moderate-to-high levels of burden and clinically relevant levels of distress, respectively, which changed to 20% and 18.8% at T2. Informal caregiver burden and distress at baseline were the strongest predictors of informal caregiver burden and distress during and following patients' treatment, respectively. CONCLUSION: When informal caregivers and patients experience problems before start of adjuvant chemotherapy, problems seem to improve over time. Approximately 20% of informal caregivers remain burdened and distressed after patients' end of treatment. Paying attention to baseline distress and burden seems indicated, as these were strong predictors of informal caregivers' well-being during and after treatment.


Assuntos
Cuidadores/psicologia , Quimioterapia Adjuvante/métodos , Neoplasias do Colo/tratamento farmacológico , Qualidade de Vida/psicologia , Apoio Social , Feminino , Humanos , Estudos Longitudinais , Masculino , Pessoa de Meia-Idade , Estudos Prospectivos
15.
Rev. ter. ocup ; 32(1-3): e204894, jan.-dez. 2021-2022.
Artigo em Inglês, Português | LILACS-Express | LILACS | ID: biblio-1418581

RESUMO

In Brazil, a large part of adopted children and adolescents were sheltered after a protective court order. In the adoption process, after the steps of gradual contact, children and parents start to live together permanently, when they experience the process of building a new daily life, in which activities and interactions already known undergo transformations. The study aimed to understand the deinstitutionalization process by adoption from the point of view of fathers and mothers who adopted children over two years. It was support by references that constitute the understanding of everyday life in the scope of occupational therapy, from a perspective that denaturalizes it, putting into view its complexity in the constellation of human interactions. It took place through the collection and analysis of interviews with adopting fathers and mothers. The results composed thematic axes gathering the perspectives of the parents, indicating that: a) their projections about future daily life were relevant in defining the profile of the children to be adopted; b) children's daily experiences in SAI were not properly presented to them prior to the phase of definitive coexistence; c) the process of building parenthood was essentially linked to the constitution of a common daily life, in family. It is essential to pay attention to the centrality of everyday life to build bonds and a stable socio-relational environments It is essential to pay attention to the centrality of everyday life to build bonds and stable socio-relational environments that are conducive to the development of children and adolescents

16.
S Afr Med J ; 110(10): 968-972, 2020 09 07.
Artigo em Inglês | MEDLINE | ID: mdl-33205722

RESUMO

The SARS-CoV-2 pandemic has challenged the provision of healthcare in ways that are unprecedented in our lifetime. Planning for the sheer numbers expected during the surge has required public hospitals to de-escalate all non-essential clinical services to focus on COVID-19. Western Cape Province was the initial epicentre of the COVID-19 epidemic in South Africa (SA), and the Cape Town metro was its hardest-hit geographical region. We describe how we constructed our COVID-19 hospital-wide clinical service at Groote Schuur Hospital, the University of Cape Town's tertiary-level teaching hospital. By describing the barriers and enablers, we hope to provide guidance rather than a blueprint for hospitals elsewhere in SA and in low-resource countries that face similar challenges now or during subsequent waves.


Assuntos
Infecções por Coronavirus/diagnóstico , Infecções por Coronavirus/terapia , Hospitais Universitários/organização & administração , Pneumonia Viral/diagnóstico , Pneumonia Viral/terapia , Centros de Atenção Terciária/organização & administração , Betacoronavirus , COVID-19 , Infecções por Coronavirus/epidemiologia , Registros Eletrônicos de Saúde/organização & administração , Serviço Hospitalar de Emergência/organização & administração , Humanos , Unidades de Terapia Intensiva/organização & administração , Administração de Materiais no Hospital , Pandemias , Equipe de Assistência ao Paciente , Pneumonia Viral/epidemiologia , SARS-CoV-2 , Centros de Cuidados de Saúde Secundários , África do Sul/epidemiologia
17.
S Afr Med J ; 110(7): 691-694, 2020 Jul 07.
Artigo em Inglês | MEDLINE | ID: mdl-32880349

RESUMO

BACKGROUND: The most common clinical indication for renal biopsy in the early post-transplant period is early graft dysfunction (EGD), which may present either as delayed graft function (DGF) or acute graft dysfunction. Even though it is a valuable diagnostic tool, renal allograft biopsy is not without risk of major complications. Recent studies have suggested that, with modern immunosuppressive induction regimens and more accurate ways to determine high immunological risk transplants, early acute rejection (AR) is uncommon and routine biopsy for EGD does not result in a change in management. OBJECTIVES: To describe the histological findings and complications of renal allograft biopsies for EGD in our setting, and to determine whether our current threshold for biopsy is appropriate. METHODS: This study was a retrospective audit that included all patients who underwent renal allograft biopsy within the first 30 days of transplantation at Groote Schuur Hospital, Cape Town, South Africa, from 1 June 2010 to 30 June 2018. The indication for biopsy was any patient who showed significant EGD, characterised by acute graft dysfunction or DGF with dialysis dependence. RESULTS: During the study period, 330 patients underwent renal transplantation, of whom 105 (32%) had an early biopsy and were included in the study. The median age of recipients was 39 (range 17 - 62) years, with 65% males and 35% females. The majority of donors were deceased donations after brain death (70%), with an overall median cold ischaemic time of 9 hours (interquartile range (IQR) 4 - 16). The average number of human leukocyte antigen mismatches was 5 (IQR 4 - 7). A donor-specific antibody was recorded for 18% of recipients and a panel-reactive antibody score of >30% was recorded for 21%. The median duration after transplant for biopsy was 8 (IQR 6 - 10) days. During the first month of EGD, AR was diagnosed in 42% of patients who underwent biopsies. In 21% of these patients, there was acute cellular rejection, in 16% antibody-mediated rejection, and in 5% both of these. Acute tubular necrosis was the primary finding in 32%, with acute interstitial nephritis in 8%, and acute calcineurin toxicity in 4% of cases. A significant biopsy-related complication was recorded in 3 patients: 1 small-bowel perforation repaired via laparotomy, and 2 vascular injuries successfully embolised by interventional radiology. CONCLUSIONS: Considering the relative safety and high rate of detection of AR, a liberal approach to renal biopsy for EGD remains justifiable in our setting.


Assuntos
Aloenxertos , Biópsia , Transplante de Rim , Rim/patologia , Adolescente , Adulto , Calcineurina/efeitos adversos , Auditoria Clínica , Feminino , Rejeição de Enxerto/diagnóstico , Humanos , Necrose Tubular Aguda/patologia , Masculino , Pessoa de Meia-Idade , Nefrite Intersticial/patologia , Disfunção Primária do Enxerto/diagnóstico , Estudos Retrospectivos , África do Sul , Adulto Jovem
18.
Pneumologie ; 74(7): 423-428, 2020 Jul.
Artigo em Alemão | MEDLINE | ID: mdl-32674191

RESUMO

We report the case of a 60-year old female patient with advanced severe lung injury as a consequence of COVID-19-pneumonia. The patient was initially treated with highflow oxygen via nasal cannula (HFNC) and CPAP for two days but had to be intubated and mechanically ventilated. After failure of mechanical ventilation because of persistant severe hypoxemia treatment was switched to ECMO which was applicated for 24 days. Prognostic parameters indicated a favourable trend after day 14. After discontinuation of ECMO and 11 days of intermittent assisted ventilation via tracheostoma and low dose oxygen (1 l/min), the patient could be transferred to rehabilitation. The last chest radiograph prior to transferral revealed a nearly complete resolution of bilateral pulmonary infiltrates. Our case demonstrates that severe COVID-19-associated lung injury can be reversible even after prolonged ECMO.


Assuntos
Infecções por Coronavirus/complicações , Coronavirus , Oxigenação por Membrana Extracorpórea/métodos , Pneumonia Viral/complicações , Síndrome do Desconforto Respiratório/terapia , Insuficiência Respiratória/terapia , Betacoronavirus , COVID-19 , Infecções por Coronavirus/virologia , Feminino , Humanos , Pulmão/fisiopatologia , Pessoa de Meia-Idade , Pandemias , Pneumonia Viral/virologia , Síndrome do Desconforto Respiratório/etiologia , SARS-CoV-2 , Resultado do Tratamento
19.
S Afr Med J ; 110(2): 132-134, 2020 Jan 29.
Artigo em Inglês | MEDLINE | ID: mdl-32657684

RESUMO

BACKGROUND: South Africa (SA) has one of the lowest deceased organ donor rates in the world (1.4 donors per million population), with thousands of patients awaiting solid-organ transplantation. In order to improve access to transplantation we have to clearly define the reasons for the low deceased donation rate, specific to the population we serve. OBJECTIVES: Review of actual donor statistics highlights our successes, yet is not able to contextualise the factors responsible for the unsuccessful conversion of referred organ donors to actual organ donors. In an attempt to identify key factors preventing referred donors from becoming actual donors, we analysed the donor referral patterns at our institution over a 10-year period. METHODS: This was a retrospective descriptive study of consecutive deceased donor referrals at Groote Schuur Hospital, Cape Town, SA (from January 2007 to December 2016), utilising a regional donor referral registry. Qualitative and quantitative data were collected and presented as descriptive statistics and temporal trends. RESULTS: Over the 10-year study period, 861 possible organ donors were referred, with a steady increase in the number of referrals over time. Of the referrals, 514 (59.7%) were eligible for donation of at least one solid organ. Of the 508 families that were approached for consent to donation, 342 declined consent for a variety of reasons, resulting in a consent rate of 32.7%. Ultimately, at least one solid organ was obtained from 159 of the 166 consented donors. Despite the increasing number of possible and eligible donors, a statistically significant decline in consent rate was observed over time (ptrend=0.023). Furthermore, increasing trends in medical (as opposed to trauma) (ptrend<0.001) and extended criteria (as opposed to standard criteria) donor referrals (ptrend<0.001) were observed over the 10-year study period. CONCLUSIONS: Donor referral patterns have changed over time, with a notable increase in medical and extended criteria donors. Despite the increase in possible and eligible donors, the consent rate has declined. Further qualitative and quantitative research studies are required to understand and address this trend.


Assuntos
Transplante de Órgãos/estatística & dados numéricos , Encaminhamento e Consulta/estatística & dados numéricos , Doadores de Tecidos/estatística & dados numéricos , Obtenção de Tecidos e Órgãos/estatística & dados numéricos , Adulto , Feminino , Hospitais Públicos , Humanos , Masculino , Encaminhamento e Consulta/tendências , Sistema de Registros , Estudos Retrospectivos , África do Sul , Centros de Atenção Terciária , Obtenção de Tecidos e Órgãos/tendências , Adulto Jovem
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