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1.
Nat Astron ; 8(4): 504-519, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38659610

RESUMO

Dust associated with various stellar sources in galaxies at all cosmic epochs remains a controversial topic, particularly whether supernovae play an important role in dust production. We report evidence of dust formation in the cold, dense shell behind the ejecta-circumstellar medium (CSM) interaction in the Type Ia-CSM supernova (SN) 2018evt three years after the explosion, characterized by a rise in mid-infrared emission accompanied by an accelerated decline in the optical radiation of the SN. Such a dust-formation picture is also corroborated by the concurrent evolution of the profiles of the Hα emission line. Our model suggests enhanced CSM dust concentration at increasing distances from the SN as compared to what can be expected from the density profile of the mass loss from a steady stellar wind. By the time of the last mid-infrared observations at day +1,041, a total amount of 1.2 ± 0.2 × 10-2 M⊙ of new dust has been formed by SN 2018evt, making SN 2018evt one of the most prolific dust factories among supernovae with evidence of dust formation. The unprecedented witness of the intense production procedure of dust may shed light on the perceptions of dust formation in cosmic history.

2.
Health Phys ; 126(3): 168-172, 2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-37902495

RESUMO

ABSTRACT: Periodically the radiation protection profession has experienced purposeful deception practices that remained undetected for some time. Upon discovery, the cases of fraud revealed gaps in confirmation or validation practices that the radiation protection community should note. Summarized here is a convenience sample of actual cases of fraud involving radiation sources along with the exploited process vulnerabilities. Recommended process improvements that the radiation safety community may consider are presented to improve the collective fidelity of radiation protection processes.


Assuntos
Proteção Radiológica , Fraude/prevenção & controle
3.
NPJ Precis Oncol ; 6(1): 63, 2022 Sep 06.
Artigo em Inglês | MEDLINE | ID: mdl-36068285

RESUMO

Molecular profiling of childhood CNS tumors is critical for diagnosis and clinical management, yet tissue access is restricted due to the sensitive tumor location. We developed a targeted deep sequencing platform to detect tumor driver mutations, copy number variations, and heterogeneity in the liquid biome. Here, we present the sensitivity, specificity, and clinical relevance of our minimally invasive platform for tumor mutation profiling in children diagnosed with CNS cancer.

5.
J Hum Nutr Diet ; 34(3): 562-571, 2021 06.
Artigo em Inglês | MEDLINE | ID: mdl-33314352

RESUMO

BACKGROUND: Dietary counselling provided by a dietitian, with or without oral nutritional supplements, can impact on nutritional and clinical outcomes in head and neck cancer (HNC) patients undergoing radiotherapy. However, little is known about the role of adherence to oral nutritional interventions in this population. This review aimed to map the literature for evidence of adherence to oral nutritional interventions in HNC patients undergoing radiotherapy and to identify gaps in knowledge in this field. METHODS: A scoping review methodology was used to identify studies, extract data, and collate and summarise results. We searched Medline, Embase, Cochrane Central and CINAHL, from the earliest available time up to 8 January 2020. RESULTS: In total, 2315 unique articles were identified, 163 studies were assessed in full and niner were included in the scoping review. The use of different measures to assess adherence and variability in the timing of the assessments was noted across studies. Despite identifying studies that have measured adherence to oral nutritional interventions, very few studies monitored its influence on clinical and nutritional outcomes in HNC patients or reported factors related to adherence. CONCLUSIONS: A robust evidence base is lacking for adherence to oral nutritional intervention in HNC patients. Overall, further studies evaluating the impact of oral nutritional interventions in HNC patients undergoing radiotherapy should measure adherence to the intervention. Early recognition of non-adherence and the contributing factors could ensure intensification of nutritional support and better health outcomes.


Assuntos
Neoplasias de Cabeça e Pescoço/terapia , Terapia Nutricional/métodos , Cooperação do Paciente , Administração Oral , Humanos , Estado Nutricional , Avaliação de Resultados em Cuidados de Saúde , Radioterapia
6.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-972009

RESUMO

Background@#Patient-centered outcomes in chronic care assessed through Quality of Health Care can be measured by its congruence to the Chronic Care Model (CCM) using Patient Assessment of Chronic Illness Care (PACIC). Behavioral and quality measures that influence the patient’s perception of the quality of care remain unknown.@*Objective@#This study aimed to assess the quality of chronic illness care among diabetic patients using PACIC and its relationship to socio-demographic factors.@*Methods@#A cross-sectional study involving diabetic patients of the Out-Patient Department of a private hospital were enrolled through non-probability sampling. Overall score from the PACIC questionnaire, its subscale scores and its relationship with the socio-demographic factors were determined using descriptive statistics.@*Results@#All participants were married and living with their families. Median age was 58. The over- all PACIC score was 3.53 + 0.72 SD. Problem solving/Contextual subscale presented the highest score while follow up/coordination had the least. Those who have college degrees had significantly lower mean scores than high school graduates (p-value = 0.032).@*Conclusion@#PACIC scores indicate a moderate to high quality of care. PACIC is a practical instrument that can be used in quality assessment and improvement programs.


Assuntos
Pacientes Ambulatoriais , Diabetes Mellitus , Doença Crônica , Assistência de Longa Duração , Hospitais Privados
7.
Curr Oncol ; 27(6): e552-e559, 2020 12.
Artigo em Inglês | MEDLINE | ID: mdl-33380870

RESUMO

Background: Tyrosine kinase inhibitors (tkis) have dramatically improved the survival of patients with ALK-rearranged (ALK+) non-small-cell lung cancer (nsclc). Clinical trial data can generally compare drugs in a pair-wise fashion. Real-world collection of health utility data, symptoms, and toxicities allows for the direct comparison between multiple tki therapies in the population with ALK+ nsclc. Methods: In a prospective cohort study, outpatients with ALK+ recruited between 2014 and 2018, treated with a variety of tkis, were assessed every 3 months for clinico-demographic, patient-reported symptom and toxicity data and EQ-5D-derived health utility scores (hus). Results: In 499 longitudinal encounters of 76 patients with ALK+ nsclc, each tki had stable longitudinal hus when disease was controlled, even after months to years: the mean overall hus for each tki ranged from 0.805 to 0.858, and longitudinally from 0.774 to 0.912, with higher values associated with second- or third-generation tkis of alectinib, brigatinib, and lorlatinib. Disease progression was associated with a mean hus decrease of 0.065 (95% confidence interval: 0.02 to 0.11). Health utility scores were inversely correlated to multiple symptoms or toxicities: rho values ranged from -0.094 to -0.557. Fewer symptoms and toxicities were associated with the second- and third-generation tkis compared with crizotinib. In multivariable analysis, only stable disease state and baseline Eastern Cooperative Oncology Group performance status were associated with improved hus. Conclusions: There was no significant decrease in hus when patients with ALK+ disease were treated longitudinally with each tki, as long as patients were clinically stable. Alectinib, brigatinib, and lorlatinib had the best toxicity profiles and exhibited high mean hus longitudinally in the real-world setting.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Quinase do Linfoma Anaplásico/genética , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Carcinoma Pulmonar de Células não Pequenas/genética , Humanos , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/genética , Estudos Prospectivos , Inibidores de Proteínas Quinases/efeitos adversos
8.
Curr Oncol ; 27(5): e516-e523, 2020 10.
Artigo em Inglês | MEDLINE | ID: mdl-33173392

RESUMO

Introduction: The understanding of the biology and epidemiology of, and the optimal therapeutic strategies for, breast cancer (bca) in younger women is limited. We present the rationale, design, and initial recruitment of Reducing the Burden of Breast Cancer in Young Women (ruby), a unique national prospective cohort study designed to examine the diagnosis, treatment, quality of life, and outcomes from the time of diagnosis for young women with bca. Methods: Over a 4-year period at 33 sites across Canada, the ruby study will use a local and virtual recruitment model to enrol 1200 women with bca who are 40 years of age or younger at the time of diagnosis, before initiation of any treatment. At a minimum, comprehensive patient, tumour, and treatment data will be collected to evaluate recurrence and survival. Patients may opt to complete patient-reported questionnaires, to provide blood and tumour samples, and to be contacted for future research, forming the core dataset from which 4 subprojects evaluating genetics, lifestyle factors, fertility, and local management or delivery of care will be performed. Summary: The ruby study will be the most comprehensive repository of data, biospecimens, and patient-reported outcomes ever collected with respect to young women with bca from the time of diagnosis, enabling research unique to that population now and into the future. This research model could be used for other oncology settings in Canada.


Assuntos
Neoplasias da Mama , Neoplasias da Mama/diagnóstico , Neoplasias da Mama/epidemiologia , Neoplasias da Mama/terapia , Canadá/epidemiologia , Feminino , Humanos , Recidiva Local de Neoplasia , Estudos Prospectivos , Qualidade de Vida
9.
Curr Oncol ; 27(2): 90-99, 2020 04.
Artigo em Inglês | MEDLINE | ID: mdl-32489251

RESUMO

Background: Patient-reported outcomes (pros) are essential to capture the patient's perspective and to influence care. Although pros and pro measures are known to have many important benefits, they are not consistently being used and there is there no Canadian pros oversight. The Position Statement presented here is the first step toward supporting the implementation of pros in the Canadian health care setting. Methods: The Canadian pros National Steering Committee drafted position statements, which were submitted for stakeholder feedback before, during, and after the first National Canadian Patient Reported Outcomes (canpros) scientific conference, 14-15 November 2019 in Calgary, Alberta. In addition to the stakeholder feedback cycle, a patient advocate group submitted a section to capture the patient voice. Results: The canpros Position Statement is an outcome of the 2019 canpros scientific conference, with an oncology focus. The Position Statement is categorized into 6 sections covering 4 theme areas: Patient and Families, Health Policy, Clinical Implementation, and Research. The patient voice perfectly mirrors the recommendations that the experts reached by consensus and provides an overriding impetus for the use of pros in health care. Conclusions: Although our vision of pros transforming the health care system to be more patient-centred is still aspirational, the Position Statement presented here takes a first step toward providing recommendations in key areas to align Canadian efforts. The Position Statement is directed toward a health policy audience; future iterations will target other audiences, including researchers, clinicians, and patients. Our intent is that future versions will broaden the focus to include chronic diseases beyond cancer.


Assuntos
Atenção à Saúde/estatística & dados numéricos , Oncologia/estatística & dados numéricos , Neoplasias/terapia , Medidas de Resultados Relatados pelo Paciente , Assistência Centrada no Paciente/estatística & dados numéricos , Canadá , Atenção à Saúde/métodos , Atenção à Saúde/normas , Humanos , Oncologia/métodos , Oncologia/normas , Neoplasias/diagnóstico , Assistência Centrada no Paciente/métodos , Assistência Centrada no Paciente/normas , Qualidade de Vida
10.
Acta Medica Philippina ; : 373-386, 2020.
Artigo em Inglês | WPRIM (Pacífico Ocidental) | ID: wpr-979857

RESUMO

Background@#Preconception care is a set of interventions that aim to identify and modify biomedical, behavioral, and social risks to a woman’s health or pregnancy outcome through prevention and management. These interventions emphasize factors that must be addressed before conception or early in pregnancy in order to have maximal impact. Preconception health care is a key intervention in improving maternal and neonatal health care. Identification of specific needs of population-at-risk remains crucial in developing quality preconception health care programs in the Philippines. @*Objectives@#This paper: 1) described the preconception health status of women of reproductive age in selected communities in Lipa City Batangas; 2) identified the perceived preconception needs of women of reproductive age in selected communities; 3) determined the significant challenges to the provision of appropriate preconception health care; and 4) provided recommendations to address the gaps and challenges. @*Methods@#A total of 4,357 women of reproductive age were interviewed using a preconception checklist tool previously developed by researchers from Peking University (China), American University of Beirut (Lebanon), and University of the Philippines Manila (Philippines). Eleven Focus Group Discussions (FGDs) on various aspects of preconception health care were conducted among women of reproductive age from communities and workplaces (industries/factories, government offices, schools, entertainment centers, health centers). Thematic analyses of the data from the FGDs were performed. Recommendations for overcoming identified challenges to quality services were presented. @*Results@#There are salient gaps in preconception health care, particularly in micronutrient intake, immunization status, family planning and infectious diseases screening in both urban and rural communities. The study also showed major gaps in medical and educational services, particularly for adolescents. @*Conclusion@#Health and social challenges in the preconception health care delivery system for women of reproductive age in Lipa City Batangas were identified, including the prioritization of at-risk groups and development of strategies to address preconception health care gaps in both urban and rural settings. The alarming increasing rate of teenage pregnancy must be given highest priority with integration of safe and healthy pregnancy in the curriculum. The development of programs for men and women recognizes that parenthood is a partnership. To guarantee a successful program on preconception health care services, government must utilize an inter-sectoral and interdisciplinary approach with the participation of various stakeholders and sectors, both government and private. The engagement of women of reproductive age in planning provides a dynamic feedback for the relevance of the planned programs.


Assuntos
Atenção à Saúde
11.
Curr Oncol ; 26(6): e733-e741, 2019 12.
Artigo em Inglês | MEDLINE | ID: mdl-31896943

RESUMO

Background: We assessed whether the presence and severity of common cancer symptoms are associated with the health utility score (hus) generated from the EQ-5D (EuroQol Research Foundation, Rotterdam, Netherlands) in patients with cancer and evaluated whether it is possible pragmatically to integrate routine hus and symptom evaluation in our cancer population. Methods: Adult outpatients at Princess Margaret Cancer Centre with any cancer were surveyed cross-sectionally using the Edmonton Symptom Assessment System (esas) and the EQ-5D-3L, and results were compared using Spearman correlation coefficients and regression analyses. Results: Of 764 patients analyzed, 27% had incurable disease. We observed mild-to-moderate correlations between each esas symptom score and the hus (Spearman coefficients: -0.204 to -0.416; p < 0.0001 for each comparison), with the strongest associations being those for pain (R = -0.416), tiredness (R = -0.387), and depression (R =-0.354). Multivariable analyses identified pain and depression as highly associated (both p < 0.0001) and tiredness as associated (p = 0.03) with the hus. The ability of the esas to predict the hus was low, at 0.25. However, by mapping esas pain, anxiety, and depression scores to the corresponding EQ-5D questions, we could derive the hus using partial esas data, with Spearman correlations of 0.83-0.91 in comparisons with direct EQ-5D measurement of the hus. Conclusions: The hus derived from the EQ-5D-3L is associated with all major cancer symptoms as captured by the esas. The esas scores alone could not predict EQ-5D scores with high accuracy. However, esas-derived questions assessing the same domains as the EQ-5D-3L questions could be mapped to their corresponding EQ-5D questions to generate the hus, with high correlation to the directly measured hus. That finding suggests a potential approach to integrating routine symptom and hus evaluations after confirmatory studies.


Assuntos
Neoplasias , Qualidade de Vida , Avaliação de Sintomas , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Ansiedade , Depressão , Fadiga , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Dor , Medidas de Resultados Relatados pelo Paciente , Inquéritos e Questionários , Adulto Jovem
12.
Qual Life Res ; 28(3): 771-782, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30382479

RESUMO

PURPOSE: To introduce the EPIC-CP symptom screening tool in routine ambulatory cancer care, and to evaluate its acceptability and perceived usefulness from the perspective of patients and clinicians. METHODS: Eligible prostate cancer patients from four cancer centres were recruited (November 2014-June 2015) from radiation or surgical oncology clinics. A physician and/or health care professional reviewed the EPIC-CP results as part of the clinical encounter. Patient experience with the tool was evaluated using a nine-item Patient Exit Survey (PES). Clinician experience was evaluated through semi-structured qualitative interviews. Patient and clinician results were compared to identify common themes. RESULTS: A total of 333 patients were enrolled, of whom, 287 completed the PES. Most patients had one clinical encounter, although the number of EPIC-CP assessments ranged from 1 to 11 per patient, for a total of 937 EPIC-CP questionnaires completed. Item completion rates were high (91-100%), with items addressing sexual health among the lowest (91-92%). On the PES, most patients (70%) agreed with the item: "Completing this questionnaire helped me tell the clinicians about how I have been feeling". Thematic analysis from clinician interviews revealed that the EPIC-CP captures essential prostate-specific effects that facilitated person-centred communication and customization of interventions. Targeted clinical education and patient resources were seen as necessary for uptake. CONCLUSIONS: EPIC-CP was generally endorsed by clinicians and patients. The implementation of a disease-specific measure in place of a generic symptom screening tool has the potential to improve the quality of the clinical encounter and provide outcome measures for further health services research. Provincial implementation of this tool as a standard of care is recommended.


Assuntos
Avaliação de Resultados em Cuidados de Saúde/métodos , Medidas de Resultados Relatados pelo Paciente , Neoplasias da Próstata/diagnóstico , Qualidade de Vida/psicologia , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Humanos , Masculino , Pessoa de Meia-Idade , Ontário , Projetos Piloto , Inquéritos e Questionários
13.
Dis Esophagus ; 31(12)2018 Dec 01.
Artigo em Inglês | MEDLINE | ID: mdl-29905764

RESUMO

Esophageal cancer and its treatment can cause serious morbidity/toxicity. These effects on health-related quality of life (HRQOL) can be measured using disease-specific scales such as FACT-E, generic scales such as EQ-5D-3L, or through symptoms. In a two-year cross-sectional study, we compared HRQOL across esophageal cancer patients treated in an ambulatory clinic and across multiple disease states, among patients with all stages of esophageal cancer. Consenting patients completed FACT-E, EQ-5D, a visual analog scale, and patient reported (PR)-ECOG. Symptom complexes were constructed from FACT-E domains. Responses were categorized by disease state: pre-, during, and post-treatment, surveillance, progression, and palliative chemotherapy. Spearman correlation and multivariable linear regression characterized these associations. In total, 199 patients completed 317 questionnaires. Mean FACT-E and subscale scores dropped from baseline through treatment and recovered during post-treatment surveillance (P < 0.001); EQ-5D health utility scores (HUS) displayed a similar pattern but with smaller differences (P = 0.07), and with evidence of ceiling effect. Among patients with stage II/III esophageal cancer, mean EQ-5D HUS varied across disease states (P < 0.001), along with FACT-E and subscales (P < 0.001). Among patients with advanced disease, there was no significant difference between baseline and on-treatment total scores, but improved esophageal cancer-specific scales were noted (P = 0.003). Strong correlation was observed between EQ-5D and FACT-E (R = 0.73), along with physical and functional subscales. In addition, the association between FACT-E and EQ-5D HUS was maintained in a multivariable model (P < 0.001). We interpret these results to suggest that in a real-world clinic setting, FACT-E, EQ-5D HUS, and symptoms were strongly correlated. Most HRQOL and symptom parameters suggested that patients had worse HRQOL and symptoms during curative therapy, but recovered well afterwards. In contrast, palliative chemotherapy had a neutral to positive impact on HRQOL/symptoms when compared to their baseline pre-treatment state.


Assuntos
Neoplasias Esofágicas/diagnóstico , Nível de Saúde , Qualidade de Vida , Índice de Gravidade de Doença , Adulto , Idoso , Idoso de 80 Anos ou mais , Estudos Transversais , Feminino , Humanos , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Análise Multivariada , Estatísticas não Paramétricas , Inquéritos e Questionários
14.
Support Care Cancer ; 26(2): 361-374, 2018 02.
Artigo em Inglês | MEDLINE | ID: mdl-28948360

RESUMO

PURPOSE: The aims of this review were to (1) examine the effectiveness of Internet-based interventions on cancer chemotherapy-related physical symptoms (severity and/or distress) and health-related quality of life (HRQOL) outcomes and (2) identify the design elements and processes for implementing these interventions in oncology practices. METHODS: A systematic review was performed. The Cochrane Database of Systematic Reviews, and Cochrane Central Register of Controlled Trials, EMBASE, MEDLINE, CINAHL, and PsycINFO were searched for studies dating from January 2000 through to October 2016. Based on pre-determined selection criteria, data was extracted from eligible studies. Methodological quality of studies was assessed using an adapted version of the Cochrane Collaboration Back Review Group checklist. RESULTS: The literature search yielded 1766 studies of which only six RCTs fulfilled the eligibility criteria. Although the content, duration, and frequency of interventions varied considerably across studies, commonly used elements included tailored information, education, self-management support, and communication with clinicians. Five studies measured symptom distress and four of them reported statistically significant differences between study groups. Of the three studies that measured HRQOL, two reported improvement (or no deterioration over time) for the intervention group. However, several methodological issues including high attrition rates, poor adherence to interventions, and use of non-validated measures affect confidence in the strength of evidence. CONCLUSION: Despite the evidence in support of using the Internet as a worthwhile tool for effective patient engagement and self-management of chemotherapy-related symptoms outside clinic visits, methodological limitations in the evidence base require further well-planned and quality research.


Assuntos
Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Internet , Neoplasias/tratamento farmacológico , Cuidados Paliativos/métodos , Telemedicina/métodos , Adulto , Comunicação , Humanos , Participação do Paciente , Qualidade de Vida , Autocuidado/métodos , Resultado do Tratamento
15.
Curr Oncol ; 24(5): 284-294, 2017 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-29089795

RESUMO

PURPOSE: In this study, we examined the effects of a 30-week community-based exercise program on cancer-related fatigue, quality of life, and other health-related outcomes in a sample of adults with mixed cancer diagnoses. METHODS: This prospective cohort study looked at outcomes for participants involved in the Wellspring Cancer Exercise Program in southern Ontario. The program consisted of an initial phase of two supervised sessions weekly for 10 weeks and a transition phase of one supervised session weekly for the subsequent 20 weeks. Outcomes were measured at baseline and every 10 weeks throughout the intervention, as well as at 16 weeks after program completion. RESULTS: During a period of 13 months, 229 of the 355 cancer survivors who enrolled in the exercise program consented to participate in the study. Participants attended 71% of the supervised exercise sessions in the initial phase and 49% in the transition phase. From baseline to the end of the initial phase, significant improvements in cancer-related fatigue, 6-minute walk test, social well-being, systolic blood pressure, balance, and physical activity volume were observed. During the transition phase, health-related quality of life and emotional well-being improved significantly. CONCLUSIONS: The Wellspring Cancer Exercise Program is associated with clinically meaningful improvements in cancer-related fatigue and functional aerobic capacity. Several other aspects of well-being in cancer survivors also improved for participants in the program. Community-based cancer exercise programs such as the Wellspring Cancer Exercise Program can improve well-being for cancer survivors and can provide an effective option that enhances sustainability and accessibility to exercise services for this population.

16.
Nature ; 551(7679): 210-213, 2017 11 08.
Artigo em Inglês | MEDLINE | ID: mdl-29120417

RESUMO

Every supernova so far observed has been considered to be the terminal explosion of a star. Moreover, all supernovae with absorption lines in their spectra show those lines decreasing in velocity over time, as the ejecta expand and thin, revealing slower-moving material that was previously hidden. In addition, every supernova that exhibits the absorption lines of hydrogen has one main light-curve peak, or a plateau in luminosity, lasting approximately 100 days before declining. Here we report observations of iPTF14hls, an event that has spectra identical to a hydrogen-rich core-collapse supernova, but characteristics that differ extensively from those of known supernovae. The light curve has at least five peaks and remains bright for more than 600 days; the absorption lines show little to no decrease in velocity; and the radius of the line-forming region is more than an order of magnitude bigger than the radius of the photosphere derived from the continuum emission. These characteristics are consistent with a shell of several tens of solar masses ejected by the progenitor star at supernova-level energies a few hundred days before a terminal explosion. Another possible eruption was recorded at the same position in 1954. Multiple energetic pre-supernova eruptions are expected to occur in stars of 95 to 130 solar masses, which experience the pulsational pair instability. That model, however, does not account for the continued presence of hydrogen, or the energetics observed here. Another mechanism for the violent ejection of mass in massive stars may be required.

17.
Curr Oncol ; 24(3): 161-167, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28680275

RESUMO

BACKGROUND: Personal health information, including diagnoses and hospital admissions, is routinely collected in administrative databases. Patients enrolling on clinical trials consent to separate collection and storage of their personal health information. We evaluated patient preferences for linking long-term data from administrative databases with clinical trials. METHODS: Adults with cancer attending outpatient clinics at 3 Ontario hospitals were surveyed about their willingness, when faced with the hypothetical scenario of participating in a clinical trial, to provide potentially identifying information such as initials and date of birth to facilitate long-term research access to normally deidentified publicly collected databases. RESULTS: Of 569 patients surveyed, 335 (59%) were women, 452 (79%) were white, 385 (68%) had a post-secondary education, and 386 (68%) had never participated in a clinical trial. Median age in the group was 59 years. Most participants (93%, cohort 1) would allow long-term access to their information and allow personal information to be used to match clinical trial with administrative data. At the time of clinical trial closure, two thirds of participants (68%, cohort 2) preferred to make additional clinical information available through linkage with administrative databases, and 8 (9%) preferred to have no further information made available to researchers. No significant differences were found in the subset of patients who were part of a clinical trial and those who had never participated (p = 0.65). INTERPRETATION: Almost all patients would allow a clinical trial research team to access their confidential information, providing a more comprehensive assessment of an intervention's long-term risks and benefits.

18.
Am J Transplant ; 17(8): 2055-2064, 2017 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-28226413

RESUMO

Early activation of coagulation is an important factor in the initiation of innate immunity, as characterized by thrombotic microangiopathy (TMA). In transplantation, systemic anticoagulation is difficult due to bleeding. A novel "cytotopic" agent, thrombalexin (TLN), combines a cell-membrane-bound (myristoyl tail) anti-thrombin (hirudin-like peptide [HLL]), which can be perfused directly to the donor organ or cells. Thromboelastography was used to measure time to clot formation (r-time) in both rhesus and human blood, comparing TLN versus HLL (without cytotopic tail) versus negative control. Both TLN- and HLL-treated rhesus or human whole blood result in significantly prolonged r-time compared to kaolin controls. Only TLN-treated human endothelial cells and neonatal porcine islets prolonged time to clot formation. Detection of membrane-bound TLN was confirmed by immunohistochemistry and fluorescence activated cell sorter. In vivo, perfusion of a nonhuman primate kidney TLN-supplemented preservation solution in a sensitized model of transplantation demonstrated no evidence of TLN systemically. Histologically, TLN was shown to be present up to 4 days after transplantation. There was no platelet deposition, and TMA severity, as well as microvascular injury scores (glomerulitis + peritubular capillaritis), were less in the TLN-treated animals. Despite promising evidence of localized efficacy, no survival benefit was demonstrated.


Assuntos
Anticoagulantes/farmacologia , Coagulação Sanguínea/efeitos dos fármacos , Transplante de Rim/efeitos adversos , Peptídeos/farmacologia , Microangiopatias Trombóticas/prevenção & controle , Animais , Humanos , Macaca mulatta , Masculino , Peptídeos/sangue , Perfusão , Microangiopatias Trombóticas/etiologia , Microangiopatias Trombóticas/patologia
19.
Am J Transplant ; 17(1): 287-291, 2017 01.
Artigo em Inglês | MEDLINE | ID: mdl-27545820

RESUMO

Interstitial nephritis due to viruses is well-described after solid organ transplantation. Viruses implicated include cytomegalovirus; BK polyomavirus; Epstein-Barr virus; and, less commonly, adenovirus. We describe a rare case of hemorrhagic allograft nephritis due to herpes simplex virus type 1 at 10 days after living donor kidney transplantation. The patient had a favorable outcome with intravenous acyclovir and reduction of immunosuppression.


Assuntos
Rejeição de Enxerto/etiologia , Hemorragia/virologia , Herpes Simples/complicações , Herpesvirus Humano 1/patogenicidade , Falência Renal Crônica/cirurgia , Transplante de Rim/efeitos adversos , Nefrite/virologia , Aciclovir/uso terapêutico , Aloenxertos , Antivirais/uso terapêutico , Taxa de Filtração Glomerular , Rejeição de Enxerto/patologia , Sobrevivência de Enxerto , Hemorragia/tratamento farmacológico , Humanos , Terapia de Imunossupressão , Testes de Função Renal , Masculino , Pessoa de Meia-Idade , Nefrite/tratamento farmacológico , Prognóstico , Fatores de Risco
20.
BMJ Support Palliat Care ; 7(2): 150-157, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26156005

RESUMO

OBJECTIVES: Home is considered the preferred place of death for many, but patients with haematological malignancies (leukaemias, lymphomas and myeloma) die in hospital more often than those with other cancers and the reasons for this are not wholly understood. We examined preferred and actual place of death among people with these diseases. METHODS: The study is embedded within an established population-based cohort of patients with haematological malignancies. All patients diagnosed at two of the largest hospitals in the study area between May 2005 and April 2008 with acute myeloid leukaemia, diffuse large B-cell lymphoma or myeloma, who died before May 2010 were included. Data were obtained from medical records and routine linkage to national death records. RESULTS: 323 deceased patients were included. A total of 142 (44%) had discussed their preferred place of death; 45.8% wanted to die at home, 28.2% in hospital, 16.9% in a hospice, 5.6% in a nursing home and 3.5% were undecided; 63.4% of these died in their preferred place. Compared to patients with evidence of a discussion, those without were twice as likely to have died within a month of diagnosis (14.8% vs 29.8%). Overall, 240 patients died in hospital; those without a discussion were significantly more likely to die in hospital than those who had (p≤0.0001). Of those dying in hospital, 90% and 75.8% received haematology clinical input in the 30 and 7 days before death, respectively, and 40.8% died in haematology areas. CONCLUSIONS: Many patients discussed their preferred place of death, but a substantial proportion did not and hospital deaths were common in this latter group. There is scope to improve practice, particularly among those dying soon after diagnosis. We found evidence that some people opted to die in hospital; the extent to which this compares with other cancers is of interest.


Assuntos
Atitude Frente a Morte , Neoplasias Hematológicas/epidemiologia , Preferência do Paciente , Estudos de Coortes , Inglaterra/epidemiologia , Feminino , Neoplasias Hematológicas/psicologia , Humanos , Leucemia Mieloide Aguda/epidemiologia , Leucemia Mieloide Aguda/psicologia , Linfoma Difuso de Grandes Células B/epidemiologia , Linfoma Difuso de Grandes Células B/psicologia , Masculino , Mieloma Múltiplo/epidemiologia , Mieloma Múltiplo/psicologia , Cuidados Paliativos , Medicina Estatal
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