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Carrera PM, Curigliano G, Santini D, Sharp L, Chan RJ, Pisu M, Perrone F, Karjalainen S, Numico G, Cherny N, Winkler E, Amador ML, Fitch M, Lawler M, Meunier F, Khera N, Pentheroudakis G, Trapani D, Ripamonti CI. ESMO expert consensus statements on the screening and management of financial toxicity in patients with cancer. ESMO Open 2024; 9:102992. [PMID: 38626634 PMCID: PMC11033153 DOI: 10.1016/j.esmoop.2024.102992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/28/2024] [Accepted: 03/10/2024] [Indexed: 04/18/2024] Open
Abstract
BACKGROUND Financial toxicity, defined as both the objective financial burden and subjective financial distress from a cancer diagnosis and its treatment, is a topic of interest in the assessment of the quality of life of patients with cancer and their families. Current evidence implicates financial toxicity in psychosocial, economic and other harms, leading to suboptimal cancer outcomes along the entire trajectory of diagnosis, treatment, supportive care, survivorship and palliation. This paper presents the results of a virtual consensus, based on the evidence base to date, on the screening and management of financial toxicity in patients with and beyond cancer organized by the European Society for Medical Oncology (ESMO) in 2022. METHODS A Delphi panel of 19 experts from 11 countries was convened taking into account multidisciplinarity, diversity in health system contexts and research relevance. The international panel of experts was divided into four working groups (WGs) to address questions relating to distinct thematic areas: patients with cancer at risk of financial toxicity; management of financial toxicity during the initial phase of treatment at the hospital/ambulatory settings; financial toxicity during the continuing phase and at end of life; and financial risk protection for survivors of cancer, and in cancer recurrence. After comprehensively reviewing the literature, statements were developed by the WGs and then presented to the entire panel for further discussion and amendment, and voting. RESULTS AND DISCUSSION A total of 25 evidence-informed consensus statements were developed, which answer 13 questions on financial toxicity. They cover evidence summaries, practice recommendations/guiding statements and policy recommendations relevant across health systems. These consensus statements aim to provide a more comprehensive understanding of financial toxicity and guide clinicians globally in mitigating its impact, emphasizing the importance of further research, best practices and guidelines.
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Affiliation(s)
- P M Carrera
- German Cancer Research Center, Heidelberg, Germany; Healtempact: Health/Economic Insights-Impact, Hengelo, The Netherlands.
| | - G Curigliano
- European Institute of Oncology, IRCCS, Milan; Department of Oncology and Hemato-Oncology, University of Milano, Milan
| | - D Santini
- Oncologia Medica A, Policlinico Umberto 1, La Sapienza Università di Roma, Rome, Italy
| | - L Sharp
- Population Health Sciences Institute, Newcastle University, Newcastle Upon Tyne, UK
| | - R J Chan
- Caring Futures Institute, Flinders University, Adelaide, Australia
| | - M Pisu
- University of Alabama in Birmingham, Birmingham, USA
| | - F Perrone
- National Cancer Institute IRCCS G. Pascale Foundation, Naples, Italy
| | | | - G Numico
- Azienda Ospedaliera S. Croce e Carle, Cuneo, Italy
| | - N Cherny
- Shaare Zedek Medical Center, Jerusalem, Israel
| | - E Winkler
- National Center for Tumor Diseases (NCT), NCT Heidelberg, a partnership between DKFZ and Heidelberg University Hospital, Heidelberg University, Medical Faculty, Department of Medical Oncology, Heidelberg, Germany
| | - M L Amador
- Spanish Association Against Cancer (AECC), Madrid, Spain
| | - M Fitch
- Bloomberg Faculty of Nursing, University of Toronto, Toronto, Canada
| | - M Lawler
- Patrick G. Johnston Centre for Cancer Research, Queen's University Belfast, Belfast, UK
| | - F Meunier
- European Initiative on Ending Discrimination against Cancer Survivors and Belgian Royal Academy of Medicine (ARMB), Brussels, Belgium
| | | | | | - D Trapani
- European Institute of Oncology, IRCCS, Milan; Department of Oncology and Hemato-Oncology, University of Milano, Milan
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Pauge S, Surmann B, Züger A, Mathies V, Richter L, Mehlis K, Ernst T, Greiner W, Menold N, Winkler E. 1323P Towards the development of a German instrument to measure financial effects of a tumor disease: First results. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Köngeter A, Schickhardt C, Jungkunz M, Bergbold S, Mehlis K, Winkler E. Patients’ willingness to provide their clinical data for
research purposes and acceptance of different consent models. Findings from a
representative survey of cancer patients in Germany. Das Gesundheitswesen 2022. [DOI: 10.1055/s-0042-1753767] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- A Köngeter
- University Hospital Heidelberg, Translational Medical Ethics,
Heidelberg, Deutschland
| | - C Schickhardt
- German Cancer Research Center, Translational Medical Ethics,
Heidelberg, Deutschland
| | - M Jungkunz
- German Cancer Research Center, Translational Medical Ethics,
Heidelberg, Deutschland
| | - S Bergbold
- German Cancer Research Center, Heidelberg, Deutschland
| | - K Mehlis
- University Hospital Heidelberg, Translational Medical Ethics,
Heidelberg, Deutschland
| | - E Winkler
- University Hospital Heidelberg, Translational Medical Ethics,
Heidelberg, Deutschland
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Schildmann J, Junghanss C, Oldenburg M, Schuler U, Trümper L, Wörmann B, Winkler E. Role and responsibility of oncologists in assisted suicide. Practice and views among members of the German Society of Haematology and Medical Oncology. ESMO Open 2021; 6:100329. [PMID: 34896697 PMCID: PMC8666647 DOI: 10.1016/j.esmoop.2021.100329] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 10/08/2021] [Accepted: 11/04/2021] [Indexed: 11/16/2022] Open
Abstract
Background Physician-assisted suicide (PAS) is a controversial practice and regulatory frameworks differ regarding assigned physicians' roles. This study explores clinical experience and views of German oncologists concerning ethically and legally relevant aspects of PAS after change of the law. Materials and methods An online survey was conducted among members of the German Society of Haematology and Medical Oncology (DGHO) in March 2021. Descriptive analysis, bivariate and multivariable logistic regression of quantitative data on determinants related to (un)willingness to assist with suicide as well qualitative analysis of free-text comments were carried out. Results Seven hundred and forty-five of 3588 DGHO members responded (20.8%). Of these, 29.9% reported requests for a lethal drug and 3.0% (n = 22) reported to have assisted with suicide. Almost half of them (47.0%, n = 350) objected to providing PAS, whereas 45.9% indicated a willingness at least under certain conditions. Of those respondents who did not object to PAS, 25.4% would also consider assistance if those willing to die had a psychiatric disease and 10.2% if requestors had no disease at all. A majority viewed a role for physicians regarding different tasks associated with assisted suicide. Respondents with <10 years of professional experience, working in hospital with religious affiliation and with subspecialisation in palliative care were significantly less frequently willing to assist suicide. Conclusions Respondents are divided in their personal attitudes towards PAS but a majority supports involvement of physicians regarding different tasks related to assisted suicide. Data about the practice and envisaged professional role may inform development of an acceptable ethico-legal framework for a controversial practice. In Germany, as in other countries, assisted suicide has become lawful more recently. To be able to develop guidance on the highly controversial subject, empirical data on practice and related aspects are needed. 30% of responding oncologists report requests for lethal drugs by their patients and 3% have assisted with suicide. Compared with 2015, significantly more oncologists report requests for lethal drugs and willingness to assist with suicide. Palliative care qualification and less professional experience were negatively associated with willingness to assist suicide.
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Affiliation(s)
- J Schildmann
- Institute for History and Ethics of Medicine, Interdisciplinary Center for Health Sciences, Medical Faculty of Martin Luther University Halle-Wittenberg, Halle (Saale), Germany.
| | - C Junghanss
- Division of Medicine, Department of Hematology, Oncology and Palliative Medicine, University Medical Center, Rostock, Germany
| | - M Oldenburg
- German Society of Haematology and Medical Oncology (DGHO), Berlin, Germany
| | - U Schuler
- Department of Internal Medicine I, University Hospital and Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - L Trümper
- Department of Hematology and Medical Oncology, University Medicine Göttingen, Göttingen, Germany
| | - B Wörmann
- German Society of Haematology and Medical Oncology (DGHO), Berlin, Germany; Department of Internal Medicine, Hematology/Oncology and Tumor Immunology, Charité University Medicine, Berlin, Germany
| | - E Winkler
- National Center for Tumor Diseases, Section for Translational Medical Ethics, Department of Medical Oncology, University Hospital, Heidelberg, Germany
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Apostolidis L, Kreutzfeldt S, Winkler E, Kratochwil C, Kender Z. 1116P Well-differentiated neuroendocrine tumors of the kidney: Clinical characterics and treatment outcomes of a very rare disease. Ann Oncol 2021. [DOI: 10.1016/j.annonc.2021.08.198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Apostolidis L, Jäger D, Winkler E. 1177P Efficacy and toxicity of chemotherapy with carboplatin and etoposide in elderly patients with extrapulmonary neuroendocrine carcinoma. Ann Oncol 2020. [DOI: 10.1016/j.annonc.2020.08.1390] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Apostolidis L, Winkler E, Jäger D. Efficacy and toxicity of combination chemotherapy with cyclophosphamide, vincristine and an anthracycline in patients with metastatic extrapulmonary neuroendocrine carcinoma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz256.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Apostolidis L, Nientiedt C, Winkler E, Berger A, Kratochwil C, Kaiser A, Jäger D, Hohenfellner M, Hüttenbrink C, Pahernik S, Distler F, Grüllich C. Clinical characteristics, treatment outcomes and potential novel therapeutic options for patients with neuroendocrine carcinoma of the prostate (NEPC). Ann Oncol 2018. [DOI: 10.1093/annonc/mdy284.063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Winkler E, Mehlis K, Surmann B, Witte J, Lingnau R, Apostolidis L, Walther J, Greiner W. Financial toxicity in German cancer patients: How does a chronic disease impact the economic situation? Ann Oncol 2018. [DOI: 10.1093/annonc/mdy424.079] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Apostolidis L, Kreutzfeldt S, Oles M, Gieldon L, Heining C, Horak P, Hutter B, Fröhlich M, Klink B, Lamping M, Uhrig S, Stenzinger A, Winkler E, Wiedenmann B, Jäger D, Schröck E, Keilholz U, Pavel M, Glimm H, Fröhling S. Prospective genome and transcriptome sequencing in advanced-stage neuroendocrine neoplasms. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy293.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Villalobos M, Coulibaly K, Krug K, Kamradt M, Wensing M, Siegle A, Kuon J, Eschbach C, Tessmer G, Winkler E, Szecsenyi J, Ose D, Thomas M. A longitudinal communication approach in advanced lung cancer: A qualitative study of patients', relatives' and staff's perspectives. Eur J Cancer Care (Engl) 2017; 27:e12794. [PMID: 29168594 DOI: 10.1111/ecc.12794] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/19/2017] [Indexed: 11/28/2022]
Abstract
Communication and the care of patients with advanced cancer are a dynamic, interactive and challenging process, often characterised in every day practice by discontinuity and lack of coordination. The objective of this study was to explore the patients' and family-caregivers' needs and preferences regarding communication, quality of life and care over the trajectory of disease. The second aim was to assess health professionals' views on a longitudinally structured, forward-thinking communication approach based on defined milestones. A qualitative approach was chosen incorporating semi-structured interviews with nine patients with metastatic lung cancer and nine relatives, and focus groups with 15 healthcare providers from different professions involved in the care of these patients. Patients and relatives described a situation of shock and coping deficits with moments of insufficient communication and lack of continuity in care. Healthcare providers reported the strong need for improvement in communication within the team and between patients and professionals and welcomed the implementation of a longitudinal communication approach. Requirements for the implementation of a longitudinal communication approach include specific communication training with focus on the process that patients and relatives are involved in. Team-building measures and the necessary flexibility to respect individuality in life should be incorporated.
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Affiliation(s)
- M Villalobos
- Department of Thoracic Oncology, Member of the German Center for Lung Research (DZL), University Hospital Heidelberg and Translational Lung Research Center Heidelberg (TLRC-H), Heidelberg, Germany
| | - K Coulibaly
- Department of General Practice and Health Services Research, University Hospital Heidelberg, Heidelberg, Germany
| | - K Krug
- Department of General Practice and Health Services Research, University Hospital Heidelberg, Heidelberg, Germany
| | - M Kamradt
- Department of General Practice and Health Services Research, University Hospital Heidelberg, Heidelberg, Germany
| | - M Wensing
- Department of General Practice and Health Services Research, University Hospital Heidelberg, Heidelberg, Germany
| | - A Siegle
- Department of Thoracic Oncology, Member of the German Center for Lung Research (DZL), University Hospital Heidelberg and Translational Lung Research Center Heidelberg (TLRC-H), Heidelberg, Germany
| | - J Kuon
- Department of Thoracic Oncology, Member of the German Center for Lung Research (DZL), University Hospital Heidelberg and Translational Lung Research Center Heidelberg (TLRC-H), Heidelberg, Germany
| | - C Eschbach
- Department of Thoracic Oncology, Member of the German Center for Lung Research (DZL), University Hospital Heidelberg and Translational Lung Research Center Heidelberg (TLRC-H), Heidelberg, Germany
| | - G Tessmer
- Evangelische Lungenklinik Berlin, Berlin, Germany
| | - E Winkler
- National Center for Tumor Diseases, University Heidelberg, Heidelberg, Germany
| | - J Szecsenyi
- Department of General Practice and Health Services Research, University Hospital Heidelberg, Heidelberg, Germany
| | - D Ose
- Population Health Sciences, University of Utah, Salt Lake City, UT, USA
| | - M Thomas
- Department of Thoracic Oncology, Member of the German Center for Lung Research (DZL), University Hospital Heidelberg and Translational Lung Research Center Heidelberg (TLRC-H), Heidelberg, Germany
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Nishida Y, Winkler E, Sagare A, De Vivo D, Zlokovic B. Decreased glucose transporter 1 expression at the blood-brain barrier exacerbates Alzheimer disease-like phenotypes in mouse models. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.2167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Apostolidis L, Mehlis K, Kudlich M, Witte J, Walther J, Greiner W, Winkler E. Financial toxicity in patients with neuroendocrine tumors: Impact of a chronic disease on patients’ economic situation. Ann Oncol 2017. [DOI: 10.1093/annonc/mdx368.021] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Wiesener K, Winkler E, Schneider W. Zum Mechanismus der elektrochemischen Wasserstoffreaktion an „glatten“ Wolframcarbid- und Wolframelektroden. Z PHYS CHEM 2017. [DOI: 10.1515/zpch-1985-26673] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Maduro M, Genze F, Winkler E, Wittig R, Isachenko V, Janni W, Hancke K, Rodewald M. Follicle proliferation in cryopreserved human ovarian xenotransplants. Geburtshilfe Frauenheilkd 2016. [DOI: 10.1055/s-0036-1592761] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022] Open
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Shuaib MH, Weihe SV, Winkler E, Hinterseher U, Kugler C. Swyer-James-McLeod-Syndrom mit großer Bulla – Beispiel einer minimalinvasiven Therapie bei dieser seltenen Erkrankung. Zentralbl Chir 2016. [DOI: 10.1055/s-0036-1587477] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Winkler E, Weihe SV, Hinterseher U, Kugler C. Idiopathische Synostose zwischen Costa I+II links als selten Ursache von therapierefraktären Schulterschmerzen – Ein Fallbericht. Zentralbl Chir 2016. [DOI: 10.1055/s-0036-1587573] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Hinterseher U, Weihe SV, Winkler E, Kugler C. Kasuistik: Bilaterale bronchopulmonale Sequester – Eine Rarität. Zentralbl Chir 2016. [DOI: 10.1055/s-0036-1587459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Winkler E. XIII. Krystallographische Untersuchung des Pyrazols und einiger seiner Abkömmlinge. Z KRIST-CRYST MATER 2015. [DOI: 10.1524/zkri.1895.24.1.321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Sklenarova H, Haun M, Krümpelmann A, Friederich HC, Huber J, Thomas M, Winkler E, Girgis A, Dinkel A, Herzog W, Hartmann M. Psychometric evaluation of the German Version of the Supportive Care Needs Survey for Partners and Caregivers (SCNS-P&C-G) of cancer patients. Eur J Cancer Care (Engl) 2015; 24:884-97. [DOI: 10.1111/ecc.12325] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/03/2015] [Indexed: 11/27/2022]
Affiliation(s)
- H. Sklenarova
- Department of General Internal Medicine & Psychosomatics; Heidelberg University Hospital; D-69120 Heidelberg Germany
| | - M.W. Haun
- Department of General Internal Medicine & Psychosomatics; Heidelberg University Hospital; D-69120 Heidelberg Germany
| | - A. Krümpelmann
- Department of General Internal Medicine & Psychosomatics; Heidelberg University Hospital; D-69120 Heidelberg Germany
| | - H.-C. Friederich
- Department of General Internal Medicine & Psychosomatics; Heidelberg University Hospital; D-69120 Heidelberg Germany
| | - J. Huber
- Department of Urology; University Hospital Carl Gustav Carus; Technical University of Dresden; Dresden 01307 Germany
| | - M. Thomas
- Thoraxklinik-Heidelberg gGmbH; Heidelberg University Hospital; 69126 Heidelberg Germany
| | - E.C. Winkler
- Heidelberg University Hospital; National Center for Tumor Diseases Heidelberg; 69120 Heidelberg Germany
| | - A. Girgis
- Ingham Institute for Applied Medical Research; The University of New South Wales; Liverpool BC NSW 1871 Australia
| | - A. Dinkel
- Department of Psychosomatic Medicine and Psychotherapy; Klinikum rechts der Isar der TU München; 81675 München Germany
| | - W. Herzog
- Department of General Internal Medicine & Psychosomatics; Heidelberg University Hospital; D-69120 Heidelberg Germany
| | - M. Hartmann
- Department of General Internal Medicine & Psychosomatics; Heidelberg University Hospital; D-69120 Heidelberg Germany
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Winkler E. Misclassified standing time may bias assessments of sedentary accumulation patterns when using non-postural accelerometer data. J Sci Med Sport 2014. [DOI: 10.1016/j.jsams.2014.11.225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Healy G, Dunstan D, Winkler E, Owen N. Potential impacts on cardio-metabolic risk biomarkers of reducing sitting time by increasing standing or stepping. J Sci Med Sport 2014. [DOI: 10.1016/j.jsams.2014.11.236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Eakin EG, Reeves MM, Winkler E, Healy GN, Dunstan DW, Owen N, Marshal AM, Wilkie KC. Six-month outcomes from living well with diabetes: A randomized trial of a telephone-delivered weight loss and physical activity intervention to improve glycemic control. Ann Behav Med 2014; 46:193-203. [PMID: 23609340 DOI: 10.1007/s12160-013-9498-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Intensive lifestyle intervention trials in type 2 diabetes contribute evidence on what can be achieved under optimal conditions, but are less informative for translation in applied settings. PURPOSE Living Well with Diabetes is a telephone-delivered weight loss intervention designed for real-world delivery. METHODS This study is a randomized controlled trial of telephone counseling (n = 151) versus usual care (n = 151); 6-month primary outcomes of weight, physical activity, HbA1c; secondary diet outcomes; analysis was by adjusted generalized linear models. RESULTS Relative to usual care, telephone counseling participants had small but significantly better weight loss [-1.12 % of initial body weight; 95 % confidence interval (CI) -1.92, -0.33 %]; physical activity [relative rate (RR) = 1.30; 95 % CI, 1.08, 1.57]; energy intake reduction (-0.63 MJ/day; 95 % CI, -1.01, -0.25); and diet quality (3.72 points; 95 % CI, 1.77, 5.68), with no intervention effect for HbA1c (RR = 0.99; 95 % CI, 0.96, 1.01). CONCLUSIONS Results are discussed in light of challenges to intervention delivery.
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Affiliation(s)
- E G Eakin
- The University of Queensland, School of Population Health, Cancer Prevention Research Centre, Level 3 Public Health Building, Herston Road, Herston, Brisbane, QLD, 4006, Australia,
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Hammer J, Springer A, Track C, Winkler E, Böhm A, Kasparu H, Weltermann A, Altenburger A, Gruber R, Geinitz H. Total Body Irradiation (TBI) by Volumetric Modulated Arc Therapy: First Experiences and Perspectives. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Springer A, Winkler E, Putz E, Altenburger A, Gruber R, Moser K, Track C, Hammer J, Geinitz H. EP-1546: Dose planning of a total body irradiation with Volumetric Modulated Arc Therapy (VMAT). Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31664-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Weissman O, Weissman O, Farber N, Berger E, Grabov Nardini G, Zilinsky I, Winkler E, Haik J. Hypoglossal nerve paralysis in a burn patient following mechanical ventilation. Ann Burns Fire Disasters 2013; 26:86-89. [PMID: 24133402 PMCID: PMC3793884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 03/08/2013] [Indexed: 06/02/2023]
Abstract
Traumatic injury resulting in isolated dysfunction of the hypoglossal nerve is relatively rare and described in few case reports. We present a patient with isolated unilateral palsy of the twelfth cranial nerve (CN XII) resulting from recurrent airway intervention following extensive burn injuries. The differential diagnosis for paralysis of the CN XII is also discussed herein. This case illustrates the significance of comprehensive diagnostic evaluation and the need for refined airway manipulation in patients that require multiple endotracheal intubations.
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Affiliation(s)
- O. Weissman
- Department of Plastic & Reconstructive Surgery, Burn Unit, Sheba Medical Center, Tel Hashomer and Sackler School of Medicine, Tel Aviv University, Israel
| | - O. Weissman
- Technion Faculty of Medicine, Israel Institute of Technology, Haifa, Israel
| | - N. Farber
- Department of Plastic & Reconstructive Surgery, Burn Unit, Sheba Medical Center, Tel Hashomer and Sackler School of Medicine, Tel Aviv University, Israel
| | - E. Berger
- Sheba Medical Center, Tel Hashomer, Israel
| | - G. Grabov Nardini
- Department of Plastic & Reconstructive Surgery, Burn Unit, Sheba Medical Center, Tel Hashomer and Sackler School of Medicine, Tel Aviv University, Israel
| | - I. Zilinsky
- Department of Plastic & Reconstructive Surgery, Burn Unit, Sheba Medical Center, Tel Hashomer and Sackler School of Medicine, Tel Aviv University, Israel
| | - E. Winkler
- Department of Plastic & Reconstructive Surgery, Burn Unit, Sheba Medical Center, Tel Hashomer and Sackler School of Medicine, Tel Aviv University, Israel
| | - J. Haik
- Department of Plastic & Reconstructive Surgery, Burn Unit, Sheba Medical Center, Tel Hashomer and Sackler School of Medicine, Tel Aviv University, Israel
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Busch C, Clasen J, Deci N, Keller-Landvogt K, Maßholder F, Vowinkel J, Winkler E. [Using the Work Environment as Access--A Multiplier Programme for Health Promotion for Low-Skilled Workforces with a High Proportion of Migrants: ReSuDi]. Gesundheitswesen 2013; 77 Suppl 1:S35-6. [PMID: 23757101 DOI: 10.1055/s-0033-1334939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
To gain access to low-qualified workforces with a high proportion of migrants a multiplier programme has been developed. Prevention providers, such as statutory health insurances are appropriate multipliers across the individual enterprises. Intra-corporate multipliers are trained on different organisational levels: peer mentors on the level of the low-qualified workforces, supervisors, and members and dependents of the key management personnel. Provisional results show the effectiveness of the programme.
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Affiliation(s)
- C Busch
- Arbeits- und Organisationspsychologie, Universität Hamburg
| | - J Clasen
- Arbeits- und Organisationspsychologie, Universität Hamburg
| | - N Deci
- Arbeits- und Organisationspsychologie, Universität Hamburg
| | | | - F Maßholder
- Arbeits- und Organisationspsychologie, Universität Hamburg
| | - J Vowinkel
- Arbeits- und Organisationspsychologie, Universität Hamburg
| | - E Winkler
- Arbeits- und Organisationspsychologie, Universität Hamburg
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Buman M, Kurka J, Winkler E, Gardiner P, Hekler E, Healy G, Owen N, Baldwin C, Ainsworth B. Estimated replacement effects of accelerometer-derived physical activity and self-reported sleep duration on chronic disease biomarkers. J Sci Med Sport 2012. [DOI: 10.1016/j.jsams.2012.11.183] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Healy G, Alkhajah T, Winkler E, Owen N, Eakin E. Reducing sitting time in office workers: Efficacy and acceptability of sit-stand workstations. J Sci Med Sport 2012. [DOI: 10.1016/j.jsams.2012.11.480] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Clark B, Winkler E, Healy G, Dunstan D, Owen N, Reeves M. Reliability and validity of adults’ recall of past-day sitting time. J Sci Med Sport 2012. [DOI: 10.1016/j.jsams.2012.11.299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Pefani E, Panoskaltsis N, Mantalaris A, Georgiadis MC, Pistikopoulos EN, Aguilar-Mahecha A, Lafleur J, Seguin C, Rosenbloom M, Przybytkowski E, Pelmus M, Diaz Z, Batist G, Basik M, Tavernier J, Brunet L, Bazot J, Chemelle M, Dalban C, Guiu S, di Martino C, Lehtio J, Branca M, Johansson H, Orre M, Granholm V, Forshed J, Perez-Bercoff M, Kall L, Nielsen KV, Andresen L, Muller S, Matthiesen S, Schonau A, Oktriani R, Wahyono A, Haryono S, Utomo A, Aryandono T, Diaz Z, Gagnon-Kugler T, Rousseau C, Aguilar-Mahecha A, Alcindor T, Aloyz R, Assouline S, Basik M, Bachvarov D, Belanger L, Camlioglu E, Cartillone M, Chabot B, Christodoulopoulos R, Courtemanche C, Constantin A, Benlimame N, Dao I, Dalfen R, Gosselin L, Habbab F, Hains M, Haliotis T, Nielsen TH, Joncas M, Kavan P, Klink R, Langlaben A, Lebel M, Lesperance B, Mann K, Masson J, Metrakos P, McNamara S, Miller WH, Orain M, Panasci L, Paquet E, Phillie M, Qureshi S, Rodrigue D, Salman A, Spatz A, Tetu B, Tosikyan A, Tsatoumas M, Vuong T, Batist G, Ruijtenbeek R, Houtman R, de Wijn R, Boender P, Hilhorst R, Cohen Y, Onn A, Lax A, Yosepovich A, Litz S, Kalish S, Felemovicius R, Hout-Silony G, Gutman M, Shabtai M, Rosin D, Valeanu A, Winkler E, Sklair-Levy M, Kaufman B, Barshack I, Canu V, Sacconi A, Biagioni F, Mori F, di Benedetto A, Lorenzon L, di Agostino S, Cambria A, Germoni S, Grasso G, Blandino R, Panebianco V, Ziparo V, Federici O, Muti P, Strano S, Carboni F, Mottolese M, Diodoro MG, Pescarmona E, Garofalo A, Blandino G, Ho T, Feng L, Lintula S, Orpana KA, Stenman J, El Messaoudi S, Mouliere F, del Rio M, Guedj AS, Gongora C, Molina FM, Lamy PJ, Lopez-Crapez E, Rolet F, Mathonnet M, Ychou M, Pezet D, Thierry AR, Manuarii M, Tredan O, Bachelot T, Clapisson G, Courtier A, Parmentier G, Rabeony T, Grives A, Perez S, Mouret JF, Perol D, Chabaud S, Ray-Coquard I, Labidi-Galy I, Heudel P, Pierga JY, Caux C, Blay JY, Pasqual N, Menetrier-Caux C. Technology & tools development. Ann Oncol 2012. [DOI: 10.1093/annonc/mds163] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Cohen Y, Onn A, Lax A, Yosepovich A, Litz S, Kalish S, Felemovicius R, Hout-Silony G, Gutman M, Shabtai M, Rosin D, Valeanu A, Winkler E, Sklair-Levy M, Kaufman B, Barshack I. P3.09 Sheba Medical Center's Breast Repository. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)31362-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Hauke D, Reiter-Theil S, Hoster E, Hiddemann W, Winkler E. The role of relatives in decisions concerning life-prolonging treatment in patients with end-stage malignant disorders: informants, advocates or surrogate decision-makers? Ann Oncol 2011; 22:2667-2674. [DOI: 10.1093/annonc/mdr019] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Alejandro G, Otero-Leal M, Granada M, Laura-Ccahuana D, Tovar M, Winkler E, Causa MT. Phase coexistence in manganites: doping and structural dependence. J Phys Condens Matter 2010; 22:256002. [PMID: 21393810 DOI: 10.1088/0953-8984/22/25/256002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We present a study on the phase coexistence (PC) of paramagnetic insulating (PM-I) and ferromagnetic metallic (FM-M) phases in the La(1- y)(Ca(1-x)Sr(x))(y)MnO(3) system with 0.23 ≤ y ≤ 0.45. The study was performed by means of magnetization and electron spin resonance (ESR) measurements. At high temperatures the ESR spectrum consists of a single symmetric PM line. At T(C), a FM asymmetric line is observed shifted to low fields. In a ΔT temperature range both lines are visible, defining a range of PC. For x = 0, we obtained ΔT as a function of the carrier concentration y, finding that the largest ΔT corresponds to y = 0.25. For this y value, the extreme compounds are orthorhombic and rhombohedral for x = 0 and 1, respectively. The rhombohedral to orthorhombic temperature transition (T(RO)) was determined as a function of x. We found that [Formula: see text] only if T(C) < T(RO). The PM-I/FM-M phase coexistence was only observed in the orthorhombic phase while seems to be incompatible with the more symmetric rhombohedral phase.
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Affiliation(s)
- G Alejandro
- Centro Atómico Bariloche, 8400 San Carlos de Bariloche, Río Negro, Argentina.
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Winkler E. Die Bedeutung des neuen Patientenverfügungsgesetzes für die klinische Praxis. Dtsch Med Wochenschr 2010; 135:569. [DOI: 10.1055/s-0030-1251893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Healy G, Winkler E, Dunstan D, Matthews C, Owen N. Objectively measured sedentary time, physical activity and cardio-metabolic risk in adults: NHANES (USA) 2003–2006. J Sci Med Sport 2010. [DOI: 10.1016/j.jsams.2009.10.424] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Goode A, Winkler E, Lawler S, Reeves M, Owen N, Eakin E. A telephone-delivered physical activity and dietary Intervention: Does intervention dose influence outcomes? J Sci Med Sport 2010. [DOI: 10.1016/j.jsams.2009.10.391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Winkler E, Reeves M, Fjeldsoe B, Eakin E. Effect of screening for baseline risk on results from a telephone-delivered intervention: The Logan healthy living program. J Sci Med Sport 2010. [DOI: 10.1016/j.jsams.2009.10.311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Thorp A, Healy G, Winkler E, N.Owen, Clark B, Gardiner P, Dunstan D. Objectively-assessed sedentary and physical activity time among office and retail workers: The stand up Australia study. J Sci Med Sport 2010. [DOI: 10.1016/j.jsams.2009.10.048] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Grabov-Nardini G, Haik J, Regev E, Winkler E. AlloDerm Sling for Correction of Synmastia After Immediate, Tissue Expander, Breast Reconstruction in Thin Women. Eplasty 2009; 9:e54. [PMID: 20011582 PMCID: PMC2779996] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
INTRODUCTION Synmastia is a condition in which the breasts are conjoint and the natural intermammary sulcus is obliterated. It is the rarest type of breast implant malpositioning during breast augmentation; however, it is the most difficult one to correct. AlloDerm is an acellular dermal matrix that is assuming a major role in immediate breast reconstruction in recent years. METHODS In the past 2 years, we have treated 3 thin women, a total of 6 breasts, for correction of synmastia after bilateral immediate breast reconstruction, using tissue expanders and skin sparing mastectomy. All of them suffered from synmastia, which manifested immediately after the mastectomy and accelerated during tissue expander inflation. We exchanged the expander into silicone implants, and during the same procedure we corrected the synmastia, using an AlloDerm sling. A thick sheet of AlloDerm (Life-Cell Corp, Branchbung, NJ) is used and the AlloDerm sheet is designed into a long narrow sling. Then, the sling is sutured into place. RESULTS This technique successfully resolved the synmastia. CONCLUSION The use of an AlloDerm sling to reinforce the capsule and the AlloDerm incorporation into it ensures a sound solution with a low recurrence rate.
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Affiliation(s)
- G. Grabov-Nardini
- Department of Plastic & Reconstructive Surgery, Sheba Medical Center, Tel-Hashomer, Ramat Gan, Israel (Affiliated to Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel)
| | - J. Haik
- Department of Plastic & Reconstructive Surgery, Sheba Medical Center, Tel-Hashomer, Ramat Gan, Israel (Affiliated to Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel)
| | - E. Regev
- Department of Plastic & Reconstructive Surgery, Sheba Medical Center, Tel-Hashomer, Ramat Gan, Israel (Affiliated to Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel)
| | - E. Winkler
- Department of Plastic & Reconstructive Surgery, Sheba Medical Center, Tel-Hashomer, Ramat Gan, Israel (Affiliated to Sackler School of Medicine, Tel-Aviv University, Tel-Aviv, Israel)
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Sagi L, Baum S, Lyakhovitsky A, Barzilai A, Shpiro D, Trau H, Goldan O, Winkler E. Silicone breast implant rupture presenting as bilateral leg nodules. Clin Exp Dermatol 2009; 34:e99-101. [DOI: 10.1111/j.1365-2230.2008.03196.x] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Affiliation(s)
- D. Stavrou
- Department of Plastic and Reconstructive Surgery, The Chaim Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - J. Haik
- Department of Plastic and Reconstructive Surgery, The Chaim Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - O. Weissman
- Department of Plastic and Reconstructive Surgery, The Chaim Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - O. Goldan
- Department of Plastic and Reconstructive Surgery, The Chaim Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - A. Tessone
- Department of Plastic and Reconstructive Surgery, The Chaim Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - E. Winkler
- Department of Plastic and Reconstructive Surgery, The Chaim Sheba Medical Center, Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
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Winkler E, Wetzel K. Über die Anwendung der Compartmenttherie auf die Modellierung der Isotopenzusammesetzung des Stickstoffs in seinem natürlichen Kreislauf. ACTA ACUST UNITED AC 2008. [DOI: 10.1080/10256017908544293] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- E. Winkler
- a Akademie der Wissenschaften der DDR, Zentralinstitut für Isotopen- und Strahlenforschung , Leipzig
| | - K. Wetzel
- a Akademie der Wissenschaften der DDR, Zentralinstitut für Isotopen- und Strahlenforschung , Leipzig
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Affiliation(s)
- E. Winkler
- a Akademie der Wissenschaften der DDR, Zentralinstitut für Isotopen- und Strahlenforschung , Leipzig
| | - H. Faust
- a Akademie der Wissenschaften der DDR, Zentralinstitut für Isotopen- und Strahlenforschung , Leipzig
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Winkler E, Faust H, Wetzel K, Czarnetzky HD, Hartig W. Theoretische Aspekte der Untersuchung des Stickstoffmetabolismus mit15N beim Menschen II. Probleme der Auswertung und Interpretation klinischer Untersuchungen. ACTA ACUST UNITED AC 2008. [DOI: 10.1080/10256017808544246] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- E. Winkler
- a Akademie der Wissenschaften der DDR, Zentralinstitut für Isotopen- und Strahlenforschung , Leipzig
- b Chirurgische Klinik der Karl-Marx-Universität , Leipzig
- c I. Chirurgische Klinik des Bezirkskrankenhauses St. Georg , Leipzig
| | - H. Faust
- a Akademie der Wissenschaften der DDR, Zentralinstitut für Isotopen- und Strahlenforschung , Leipzig
- b Chirurgische Klinik der Karl-Marx-Universität , Leipzig
- c I. Chirurgische Klinik des Bezirkskrankenhauses St. Georg , Leipzig
| | - K. Wetzel
- a Akademie der Wissenschaften der DDR, Zentralinstitut für Isotopen- und Strahlenforschung , Leipzig
- b Chirurgische Klinik der Karl-Marx-Universität , Leipzig
- c I. Chirurgische Klinik des Bezirkskrankenhauses St. Georg , Leipzig
| | - H.-D. Czarnetzky
- a Akademie der Wissenschaften der DDR, Zentralinstitut für Isotopen- und Strahlenforschung , Leipzig
- b Chirurgische Klinik der Karl-Marx-Universität , Leipzig
- c I. Chirurgische Klinik des Bezirkskrankenhauses St. Georg , Leipzig
| | - W. Hartig
- a Akademie der Wissenschaften der DDR, Zentralinstitut für Isotopen- und Strahlenforschung , Leipzig
- b Chirurgische Klinik der Karl-Marx-Universität , Leipzig
- c I. Chirurgische Klinik des Bezirkskrankenhauses St. Georg , Leipzig
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Winkler E, Zysler RD, Vasquez Mansilla M, Fiorani D, Rinaldi D, Vasilakaki M, Trohidou KN. Surface spin-glass freezing in interacting core-shell NiO nanoparticles. Nanotechnology 2008; 19:185702. [PMID: 21825698 DOI: 10.1088/0957-4484/19/18/185702] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Magnetization and AC susceptibility measurements have been performed on ∼3 nm NiO nanoparticles in powder form. The results indicate that the structure of the particles can be considered as consisting of an antiferromagnetically ordered core, with an uncompensated magnetic moment, and a magnetically disordered surface shell. The core magnetic moments block progressively with decreasing temperature, according to the distribution of their anisotropy energy barriers, as shown by a broad maximum of the low field zero-field-cooled magnetization (M(ZFC)) and in the in-phase component χ' of the AC susceptibility, centred at ∼70 K. On the other hand, surface spins thermally fluctuate and freeze in a disordered spin-glass-like state at much lower temperature, as shown by a peak in M(ZFC) (at 17 K, for H = 50 Oe) and in χ'. The temperature of the high temperature χ' peak changes with frequency according to the Arrhenius law; instead, for the low temperature maximum a power law dependence of the relaxation time was found, τ = τ(0)(T(g)/(T(ν)-T(g)))(α), where α = 8, like in spin glasses, τ(0) = 10(-12) s and T(g) = 15.9 K. The low temperature surface spin freezing is accompanied by a strong enhancement of magnetic anisotropy, as shown by the rapid increase of coercivity and high field susceptibility. Monte Carlo simulations for core/shell antiferromagnetic particles, with an antiferromagnetic core and a disordered shell, reproduce the qualitative behaviour of the temperature dependence of the coercivity. Interparticle interactions lead to a shift to a high temperature of the distribution of the core moment blocking temperature and to a reduction of magnetization dynamics.
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Affiliation(s)
- E Winkler
- Centro Atómico Bariloche, CNEA-CONICET, 8400 S C de Bariloche, RN, Argentina
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