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Klostermann SV, Kappler J, Waigum A, Buchmeiser MR, Köhn A, Kästner J. The reduction behavior of sulfurized polyacrylonitrile (SPAN) in lithium-sulfur batteries using a carbonate electrolyte: a computational study. Phys Chem Chem Phys 2024; 26:9998-10007. [PMID: 38477497 DOI: 10.1039/d3cp06248a] [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: 03/14/2024]
Abstract
Lithium-sulfur batteries (LSBs) have attracted attention due to their high theoretical energy density. This and various other advantages, such as the availability and non-toxicity of sulfur, raise interest in LSBs against the background of the energy revolution. However, a polysulfide shuttle mechanism can adversely affect the electrochemical performance of the cell. The sulfur redox properties are influenced, for example, by the electrolyte and the cathode material. Here, a computational study of the discharge process of an LSB with sulfurized poly(acrylonitrile) (SPAN) as the cathode material in combination with a carbonate electrolyte is presented. The nucleation of produced solid Li2S is compared to soluble Li2S. Dominating species are determined by comparing the Gibbs free energy of several species. We found that multiple lithiation steps occur before each Li2S detachment, preventing longer-chain polysulfide cleavage and a polysulfide shuttle. Through nucleating on the nitrogen-rich backbone of SPAN, Li2S units are stabilized by interactions with each other and with the nitrogen atoms. Experimental data show a potential drop and plateau during discharge, which is consistent with the calculated discharge profiles of SPAN with both soluble and nucleated Li2S, and hints at a direct solid-solid transition in the Li-SPAN cell during discharge when using carbonate-based electrolytes.
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Affiliation(s)
- S V Klostermann
- Institute for Theoretical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
| | - J Kappler
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - A Waigum
- Institute for Theoretical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
| | - M R Buchmeiser
- Institute of Polymer Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
| | - A Köhn
- Institute for Theoretical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
| | - J Kästner
- Institute for Theoretical Chemistry, University of Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany.
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Niemann A, Boudriot A, Brett B, Fritzsch C, Götz D, Haase R, Höhne S, Jorch G, Köhn A, Lux A, Zenker M, Rissmann A. Impact of the COVID-19 Pandemic Regulations on the Health Status and Medical Care of Children with Trisomy 21. Klin Padiatr 2023; 235:31-37. [PMID: 36108644 DOI: 10.1055/a-1757-9948] [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: 01/10/2023]
Abstract
BACKGROUND While children are considered at low risk for COVID-19, little is known about the impact of SARS-CoV-2 on paediatric risk patients like children with Trisomy 21 (T21). As these children often need regular therapy and various medical appointments, this study aimed to investigate the possible impact of the COVID-19 pandemic on children with T21. PATIENTS AND METHODS Parents of children with T21 in the age of 0-12 years in Saxony-Anhalt were interviewed via phone in June 2021 regarding the health status and medical care of their children during the past 15 months of pandemic. RESULTS 37 children with mean age of 6.1 years (min 0; max 12) were included in the study. The majority did not have any additional congenital anomalies. Surveyed parents hardly reported adverse changes of health status during the pandemic, but rather improvements, such as decreased number of respiratory infections and more time spend with their children. Outpatient appointments and therapy were cancelled or postponed at the onset of the pandemic, but parents reported low impact on their child's health and development. The main concern seemed to be lack of childcare during school and day-care closures and uncertainty concerning possible health impacts of an infection on their children. CONCLUSION There was low impact of the COVID-19 pandemic on health and medical care of children with T21 in our study population. Further research is needed to help weigh the child's individual risk of infection against the need for medical treatment and therapy when dealing with paediatric risk patients.
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Affiliation(s)
- Annika Niemann
- Malformation Monitoring Centre Saxony-Anhalt, Otto von Guericke University Medical Faculty, Magdeburg, Germany
| | - Anett Boudriot
- Social Paediatric Centre, Children's Centre Magdeburg gGmbH, Magdeburg, Germany
| | - Birgit Brett
- Social Paediatric Centre, Children's Centre Magdeburg gGmbH, Magdeburg, Germany
| | - Christiane Fritzsch
- Social Paediatric Centre, St. Elisabeth and St. Barbara Hospital Halle (Saale), Halle (Saale), Germany
| | - Dorit Götz
- Malformation Monitoring Centre Saxony-Anhalt, Otto von Guericke University Medical Faculty, Magdeburg, Germany
| | - Roland Haase
- Klinik für Kinder- und Jugendmedizin, Martin-Luther-Universität Halle Wittenberg, Halle/Saale, Germany.,Department of Neonatology and Paediatric Intensive Care, St. Elisabeth and St. Barbara Hospital Halle (Saale), Halle (Saale), Germany
| | - Sibylle Höhne
- Social Paediatric Centre, St. Elisabeth and St. Barbara Hospital Halle (Saale), Halle (Saale), Germany
| | - Gerhard Jorch
- Universitätsklinikum Magdeburg, Universitätskinderklinik, Magdeburg, Germany
| | - Andrea Köhn
- Malformation Monitoring Centre Saxony-Anhalt, Otto von Guericke University Medical Faculty, Magdeburg, Germany
| | - Anke Lux
- Institute of Biometry and Medical Informatics, Otto von Guericke University Medical Faculty, Magdeburg, Germany
| | - Martin Zenker
- Institut für Humangenetik, Otto von Guericke Universitat Magdeburg, Magdeburg, Germany.,Department of Paediatrics, Otto von Guericke University Medical Faculty, Magdeburg, Germany
| | - Anke Rissmann
- Malformation Monitoring Centre Saxony-Anhalt, Otto von Guericke University Medical Faculty, Magdeburg, Germany
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Greye H, Henning S, Freese K, Köhn A, Lux A, Radusch A, Redlich A, Schleef D, Seeger S, Thäle V, Rissmann A. Cross-sectional study to assess awareness of cytomegalovirus infection among pregnant women in Germany. BMC Pregnancy Childbirth 2022; 22:964. [PMID: 36566184 PMCID: PMC9789651 DOI: 10.1186/s12884-022-05312-8] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Accepted: 12/19/2022] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Study aimed to assess awareness of congenital cytomegalovirus (CMV) infection and its determinants in pregnancy. METHODS Cross-sectional survey was conducted in five hospital-based maternity units in Germany. Pregnant women attending the maternity departments completed interviewer/self-administered survey questionnaire. High-risk group was defined according to contact with children under five years of age (at home or at work). Quantitative analyses using multivariable logistic regression were performed. RESULTS One thousand two hundred thirty-three pregnant women were included. 48.5% (n = 598) of women reported any knowledge about risk of CMV infection during pregnancy. CMV infection was less known than other infections or diseases (education about toxoplasmosis 95.5% (n = 1,177), listeriosis 60.5% (n = 746). 38% (n = 468) of participants received education about CMV. CMV awareness was associated with the level of education and employment in childcare or medical care. Only 32% (n = 394) of the women made use of serological screening for CMV during pregnancy (individual health service). 40.8% (n = 503) of pregnant women were classified as high-risk group. They had significantly higher knowledge and education about CMV, and msignificantlycant more often use of the serological screening. CONCLUSIONS Less than half of pregnant women surveyed were aware of potential risk associated with CMV infection during pregnancy. In our study,one-third third of pregnant women made use of the serological screening for CMV. Regarding the lack of current consensus on the role of serological CMV screening for pregnant women, hygiene preventive measures are the only evidence-based recommendation for pregnant women and knowledge increase could potentially have major public health impact.
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Affiliation(s)
- Hannah Greye
- grid.5807.a0000 0001 1018 4307Malformation Monitoring Centre Saxony-Anhalt, Medical Faculty Otto-Von-Guericke-University Magdeburg, Leipziger Straße 44, 39120 Magdeburg, Germany
| | - Stine Henning
- grid.5807.a0000 0001 1018 4307Malformation Monitoring Centre Saxony-Anhalt, Medical Faculty Otto-Von-Guericke-University Magdeburg, Leipziger Straße 44, 39120 Magdeburg, Germany
| | - Kristina Freese
- Department of Obstetrics and Gynaecology, St. Marienstift Hospital Magdeburg, Harsdorfer Straße 30, 39110 Magdeburg, Germany
| | - Andrea Köhn
- grid.5807.a0000 0001 1018 4307Malformation Monitoring Centre Saxony-Anhalt, Medical Faculty Otto-Von-Guericke-University Magdeburg, Leipziger Straße 44, 39120 Magdeburg, Germany
| | - Anke Lux
- grid.5807.a0000 0001 1018 4307Institute for Biometrics and Medical Informatics, Medical Faculty, Otto-Von-Guericke-University Magdeburg, Leipziger Straße 44, 39120 Magdeburg, Germany
| | - Anja Radusch
- Department of Gynaecology and Obstetrics, Perinatal Centre, St. Elisabeth and St. Barbara Halle, Mauerstraße 5, 06110 Halle (Saale), Germany
| | - Anke Redlich
- grid.5807.a0000 0001 1018 4307Department of Obstetrics and Gynaecology, Otto-Von-Guericke-University Magdeburg, Gerhart-Hauptmann-Straße 35, 39108 Magdeburg, Germany
| | - Daniela Schleef
- Department of Obstetrics and Gynecology, Hospital Magdeburg GmbH, Birkenallee 34, 39130 Magdeburg, Germany
| | - Sven Seeger
- Department of Gynaecology and Obstetrics, Perinatal Centre, St. Elisabeth and St. Barbara Halle, Mauerstraße 5, 06110 Halle (Saale), Germany
| | - Volker Thäle
- grid.9018.00000 0001 0679 2801Department of Obstetrics and Fetal Medicine, Martin Luther University Halle-Wittenberg, Ernst-Grube-Str. 40, 06120 Halle (Saale), Germany
| | - Anke Rissmann
- grid.5807.a0000 0001 1018 4307Malformation Monitoring Centre Saxony-Anhalt, Medical Faculty Otto-Von-Guericke-University Magdeburg, Leipziger Straße 44, 39120 Magdeburg, Germany
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Waigum A, Black JA, Köhn A. A generalized hybrid scheme for multireference methods. J Chem Phys 2021; 155:204106. [PMID: 34852483 DOI: 10.1063/5.0067511] [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: 11/14/2022] Open
Abstract
A generalization of the hybrid scheme for multireference methods as recently put forward by Saitow and Yanai [J. Chem. Phys. 152, 114 111 (2020)] is presented. The hybrid methods are constructed by defining internal and external excitation spaces and evaluating these two subsets of excitations at different levels of theory. New hybrids that use the mix of internally contracted multireference coupled-cluster, unshifted multireference coupled electron pair, and multireference perturbation methods are derived and benchmarked. A new separation of the excitation space, which combines all singles and doubles excitations to the virtual orbitals into the external space, is also presented and tested. In general, the hybrid methods improve upon their non-hybrid parent method and offer a good compromise between computational complexity and numerical accuracy.
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Affiliation(s)
- A Waigum
- Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - J A Black
- Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
| | - A Köhn
- Institut für Theoretische Chemie, Universität Stuttgart, Pfaffenwaldring 55, D-70569 Stuttgart, Germany
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Wegner C, Kancherla V, Lux A, Köhn A, Bretschneider D, Freese K, Heiduk M, Redlich A, Schleef D, Jorch G, Rissmann A. Periconceptional folic acid supplement use among women of reproductive age and its determinants in central rural Germany: Results from a cross sectional study. Birth Defects Res 2020; 112:1057-1066. [PMID: 32445297 DOI: 10.1002/bdr2.1714] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 04/01/2020] [Revised: 05/05/2020] [Accepted: 05/07/2020] [Indexed: 12/25/2022]
Abstract
BACKGROUND Prevalence of neural tube defects (NTD) has not decreased in Germany despite longstanding recommendations for folic acid supplementation. To examine the prevalence of periconceptional folic acid supplement use and associated factors among German women of reproductive age. METHODS Cross-sectional survey was conducted in hospital-based maternity units in rural Germany. A sample of 1,004 women of reproductive age, either pregnant or in their early postpartum period, took interviewer/self-administered paper-based survey questionnaire. Prevalence of periconceptional folic acid supplement use was assessed, where periconception was defined as 1 month prior to and 3 months post-conception. Prevalence odds ratios (POR) and 95% confidence intervals (CI) using crude and adjusted logistic regression analysis were estimated to examine determinants of folic acid supplement use. RESULTS Prevalence of folic acid supplement use was 41.5% (95% CI: 37.7%, 45.7%). Multivariable analysis showed lack of educational qualifications, unplanned pregnancy, later diagnosis of pregnancy, increased parity, and not having an awareness of importance of folic acid for optimal pregnancy outcomes were associated with not taking periconceptional folic acid supplements. Books, doctors, friends, media, were sources of information. CONCLUSION Periconceptional folic acid is sub-optimal in rural Germany and thus failing to prevent NTDs. Targeted promotion of folic acid supplement use should be conducted periodically by gynecologists and primary care physicians during annual medical screenings. Mandatory folic acid fortification of staple foods is a complementary approach to overcome limitations of individual behaviors of folic acid supplement intake, and should be considered as it has been proven effective in multiple countries.
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Affiliation(s)
- Clara Wegner
- Malformation Monitoring Centre Saxony-Anhalt, Medical Faculty Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Vijaya Kancherla
- Department of Epidemiology, Emory University Rollins School of Public Health, Atlanta, Georgia, USA
| | - Anke Lux
- Institute for Biometrics and Medical Informatics, University Magdeburg, Magdeburg, Germany
| | - Andrea Köhn
- Malformation Monitoring Centre Saxony-Anhalt, Medical Faculty Otto-von-Guericke University Magdeburg, Magdeburg, Germany
| | - Dirk Bretschneider
- Department of Pediatrics, Hospital Marienstift Magdeburg, Magdeburg, Germany
| | - Kristina Freese
- Department of Obstetrics and Gynecology, Hospital Marienstift Magdeburg, Magdeburg, Germany
| | - Mathias Heiduk
- Department of Pediatrics, Hospital Magdeburg gGmbH, Magdeburg, Germany
| | - Anke Redlich
- Department of Obstetrics and Gynaecology, University Hospital Magdeburg, Magdeburg, Germany
| | - Daniela Schleef
- Department of Obstetrics and Gynecology, Hospital Magdeburg GmbH, Magdeburg, Germany
| | - Gerhard Jorch
- Department of Paediatrics, University Hospital Magdeburg, Magdeburg, Germany
| | - Anke Rissmann
- Malformation Monitoring Centre Saxony-Anhalt, Medical Faculty Otto-von-Guericke University Magdeburg, Magdeburg, Germany
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Neusel C, Class D, Eckert AW, Firsching R, Göbel P, Götz D, Haase R, Jorch G, Köhn A, Kropf S, Patzer L, Schanze I, Zahl C, Rissmann A. Multicentre approach to epidemiological aspects of craniosynostosis in Germany. Br J Oral Maxillofac Surg 2018; 56:881-886. [PMID: 30360905 DOI: 10.1016/j.bjoms.2018.10.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2018] [Accepted: 10/03/2018] [Indexed: 02/06/2023]
Abstract
We know of no current published data on the prevalence of craniosynostosis in Germany, so our objective in this study was to contribute to the limited knowledge of its epidemiology by assessing time trends, the frequency of prenatal diagnosis, and the timing of diagnosis and treatment. Data were collected in Saxony-Anhalt during the period 2000-17, and we designed a retrospective multicentre cohort study. The prevalence was 4.8 cases of craniosynostosis/10 000 births, and did not increase during that time. We compared the data of 91 patients with those of 273 controls. There were 75 boys and 16 girls (ratio 4.7:1). Fifty-one children had isolated craniosynostosis, consisting of 46 with a single-suture, and five with a multisuture, synostosis. Twenty-nine were associated with other congenital malformations, and 11 were syndromic. Three cases had been diagnosed prenatally, and 34 had skull deformities diagnosed immediately after birth at a mean (SD) age of 3.4 (4.7) months. The mean (SD) age at the time of first admission to hospital in one of the three surgical centres of Saxony-Anhalt was 5.9 (5.5) months, and 65 patients were operated on at a mean age of 9.1 (6.3) months. In contrast to published reports we found a prevalence of 4.8 cases of craniosynostosis/10 000 births that did not increase during the period 2000-16. Although we found a low prenatal detection rate, the diagnosis and treatment in this cohort study seemed timely.
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Affiliation(s)
- C Neusel
- Malformation Monitoring Centre Saxony-Anhalt, Medical Faculty Otto-von-Guericke University Magdeburg, Leipziger Str. 44, Haus 39, 39120 Magdeburg, Germany.
| | - D Class
- Universitaetsklinik fuer Neurochirurgie, Leipziger Str. 44, 39120 Magdeburg, Germany.
| | - A W Eckert
- Department of Oral and Maxillofacial Surgery, University Hospital Halle (Saale), Ernst-Grube-Str. 40, 06120 Halle (Saale), Germany.
| | - R Firsching
- Universitaetsklinik fuer Neurochirurgie, Leipziger Str. 44, 39120 Magdeburg, Germany.
| | - P Göbel
- Department of Paediatric Surgery and Paediatric Urology, Hospital St. Elisabeth and St. Barbara Halle (Saale), Mauerstraße 5, 06110 Halle (Saale), Germany.
| | - D Götz
- Malformation Monitoring Centre Saxony-Anhalt, Medical Faculty Otto-von-Guericke University Magdeburg, Leipziger Str. 44, Haus 39, 39120 Magdeburg, Germany.
| | - R Haase
- Department of Neonatology and Paediatric Intensive Care, University Hospital Halle (Saale), Ernst-Grube-Str. 40, 06120 Halle (Saale), Germany.
| | - G Jorch
- Department of Paediatrics, University Hospital Magdeburg, Leipziger Str. 44, Haus 10, 39120 Magdeburg, Germany.
| | - A Köhn
- Malformation Monitoring Centre Saxony-Anhalt, Medical Faculty Otto-von-Guericke University Magdeburg, Leipziger Str. 44, Haus 39, 39120 Magdeburg, Germany.
| | - S Kropf
- Institute of Biometry and Medical Informatics, Medical Faculty Otto-von-Guericke University Magdeburg, Leipziger Str. 44, Haus 2, 39120 Magdeburg, Germany.
| | - L Patzer
- Department of Paediatrics, Hospital St. Elisabeth and St. Barbara Halle (Saale), Mauerstraße 5, 06110 Halle (Saale), Germany.
| | - I Schanze
- Institute of Human Genetics, University Hospital Magdeburg, Leipziger Str. 44, Haus 1, Haus 39, Magdeburg, 39120 Germany.
| | - C Zahl
- Department of Oral and Maxillofacial Surgery, University Hospital Magdeburg, Leipziger Str. 44, Haus 19, 39120 Magdeburg, Germany.
| | - A Rissmann
- Malformation Monitoring Centre Saxony-Anhalt, Medical Faculty Otto-von-Guericke University Magdeburg, Leipziger Str. 44, Haus 39, 39120 Magdeburg, Germany.
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Khusainov T, Shalashov A, Gospodchikov E, Köhn A. Impact of plasma turbulence on linear mode conversion of quasi-optical wave beams in toroidal magnetic traps. EPJ Web Conf 2018. [DOI: 10.1051/epjconf/201818701010] [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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Fleischmann R, Bathe-Peters R, Köhn A, Schmidt S, Brandt S. P 97 Individualized MRI are a valid alternative to individual MRI in navigated TMS studies. Clin Neurophysiol 2017. [DOI: 10.1016/j.clinph.2017.06.173] [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: 10/18/2022]
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Jooß A, Haberbosch L, Köhn A, Kozarzewski L, Rönnefarth M, Fleischmann R, Scholz M, Schmidt S, Brandt S. P 63 Investigating the effects of tRNS variants and task dependency on cortical excitability. Clin Neurophysiol 2017. [DOI: 10.1016/j.clinph.2017.06.139] [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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Franck C, Vorwerk W, Köhn A, Rißmann A, Vorwerk U. [Prevalence, Risk Factors and Diagnostics of Hearing Impairment in Preterm Infants]. Laryngorhinootologie 2017; 96:354-360. [PMID: 28697513 DOI: 10.1055/s-0043-109512] [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: 10/19/2022]
Abstract
Introduction: The preterm birth is clearly associated with increased risk of developing congenital hearing impairment. Therefore, special attention must be paid to the postnatal control of auditory function in all preterm infants. The present work investigates if the latest scientific findings regarding prevalence, clinical diagnostics, therapy and risk factors of hearing impairment in premature infants are regularly implemented in daily practice. Methods: At the department of phoniatrics and pediatric audiology of the University Hospital of Magdeburg, the treatment data of 126 preterm children born between 2006 and 2011 were evaluated retrospectively. The additional analysis of all records available at the screening center (n=67 640) covering this period enables drawing conclusions on the total number and prevalence of hearing impairment in preterm infants in Saxony-Anhalt. Results: Almost all premature babies, like mature newborns, underwent postnatal hearing screening of both ears. The data analysis shows that the practical implementation often does not comply with the guideline of the G-BA (Gemeinsamer Bundesausschuss) in all details. For example, the recommended screening method for preterm infants (AABR) or the screening and treatment timing are not always applied in accordance with the guidelines of the G-BA. Discussion: Assessment of the practical implementation of universal newborn hearing screening was planned at the time of the introduction of the hearing screening program by the G-BA. As a part of this investigation, the practical care of vulnerable groups such as preterm infants must be given special attention. Based on the collected data, the diagnostics and therapy should be unified. Regardless of the maternity clinic where the infants were born, there should be the same opportunity for early diagnosis and thus for prognostically better treatment of congenital hearing impairment. Rapid postnatal fitting with hearing aid can stimulate the maturation of the central auditory system and potentially help to avoid problems of hearing and speech development.
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Affiliation(s)
- C Franck
- Univ. HNO-Klinik, Otto-von-Guericke Universität Magdeburg
| | - W Vorwerk
- Abteilung Phoniatrie und Pädaudiologie, HNO-Klinik, Klinikum Braunschweig.,Verein "Sachsen-Anhalt hört früher e.V."
| | - A Köhn
- Fehlbildungsmonitoring Sachsen-Anhalt.,Verein "Sachsen-Anhalt hört früher e.V."
| | - A Rißmann
- Fehlbildungsmonitoring Sachsen-Anhalt.,Verein "Sachsen-Anhalt hört früher e.V."
| | - U Vorwerk
- Univ. HNO-Klinik, Otto-von-Guericke Universität Magdeburg.,Verein "Sachsen-Anhalt hört früher e.V."
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Freethy SJ, Conway GD, Classen I, Creely AJ, Happel T, Köhn A, Vanovac B, White AE. Measurement of turbulent electron temperature fluctuations on the ASDEX Upgrade tokamak using correlated electron cyclotron emission. Rev Sci Instrum 2016; 87:11E102. [PMID: 27910478 DOI: 10.1063/1.4958908] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Turbulent temperature fluctuations are measured on the ASDEX Upgrade tokamak using pairs of closely spaced, narrow-band heterodyne radiometer channels and a standard correlation technique. The pre-detection spacing and bandwidth of the radiometer channel pairs is chosen such that they are physically separated less than a turbulent correlation length, but do not overlap. The radiometer has 4 fixed filter frequency channels and two tunable filter channels for added flexibility in the measurement position. Relative temperature fluctuation amplitudes are observed in a helium plasma to be δT/T = (0.76 ± 0.02)%, (0.67 ± 0.02)%, and (0.59 ± 0.03)% at normalised toroidal flux radius of ρtor = 0.82, 0.75, and 0.68, respectively.
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Affiliation(s)
- S J Freethy
- Max Planck Institute for Plasma Physics, 85748 Garching, Germany
| | - G D Conway
- Max Planck Institute for Plasma Physics, 85748 Garching, Germany
| | - I Classen
- FOM Institute DIFFER, 5612 AJ Eindhoven, The Netherlands
| | - A J Creely
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
| | - T Happel
- Max Planck Institute for Plasma Physics, 85748 Garching, Germany
| | - A Köhn
- Max Planck Institute for Plasma Physics, 85748 Garching, Germany
| | - B Vanovac
- FOM Institute DIFFER, 5612 AJ Eindhoven, The Netherlands
| | - A E White
- Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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Spillner C, Brett B, Fritzsch C, Fest S, Redlich A, Färber J, Doßow B, Götz D, Köhn A, Rißmann A. Cytomegalie Virus (CMV)-Infektion bei Neugeborenen – unterschätztes Risiko im klinischen Alltag? Epidemiologische Aspekte aus Sachsen-Anhalt. Z Geburtshilfe Neonatol 2015. [DOI: 10.1055/s-0035-1566570] [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: 10/22/2022]
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Köhn A, Konrad D, Haberbosch L, Jooß A, Bathe-Peters R, Fleischmann R, Schmidt S, Brandt S. P147. Infrared-based kinematic read-out of TMS-elicited complex finger movements: A pilot study. Clin Neurophysiol 2015. [DOI: 10.1016/j.clinph.2015.04.218] [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]
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Abstract
Zusammenfassung
Hintergrund: Qualitätssicherung ist in den letzten Jahren im Zuge des modernen patientenorientierten Qualitätsmanagements zu einem wesentlichen Bestandteil des heutigen Gesundheitswesens geworden. Mit der gesetzlichen Einführung des Neugeborenen-Hörscreening (NHS) im Jahr 2009 ist eine Qualitätssicherung dieser Früherkennungsuntersuchung notwendig geworden. Das Ziel der Studie war es, die Patientenzufriedenheit in Bezug auf das NHS in Sachsen-Anhalt zu ermitteln.
Patienten/Methode: Im Zeitraum von November 2013 bis April 2014 wurden retrospektiv 394 Eltern mithilfe eines standardisierten Fragebogens zu ihren Erfahrungen und Erwartungen in Bezug auf das NHS befragt. Insgesamt beteiligten sich 21 Kindertageseinrichtungen und 6 Kinderarztpraxen aus ganz Sachsen-Anhalt.
Ergebnisse: Es zeigt sich, dass die Mehrheit der Eltern mit dem NHS zufrieden ist und 97,7% das Angebot eines NHS befürworten. Von den befragten Eltern empfanden 69,3% die Aufklärung als ausreichend. Jedoch hatten sich lediglich 66,2% der Eltern mit dem Merkblatt des G-BA beschäftigt. Darüber hinaus sind 17,7% der Befragungsteilnehmer mit der fachlichen Kompetenz des untersuchenden Personals unzufrieden.
Schlussfolgerung: Die Ergebnisse der Studie zeigen, dass das NHS von den Eltern als sinnvoll erachtet wird und die Einstellung gegenüber dieser Früherkennungsuntersuchung trotz einiger Kritikpunkte positiv ausfällt.
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Affiliation(s)
- J. Müller
- Neugeborenen-Hörscreening, Trackingstelle Sachsen-Anhalt, Fehlbildungsmonitoring, Sachsen-Anhalt an der Medizinischen Fakultät der Otto-von-Guericke-Universität, Magdeburg
| | - H. Fechner
- Fachbereich Sozial- und Gesundheitswesen, Hochschule Magdeburg-Stendal, Magdeburg
| | - A. Köhn
- Neugeborenen-Hörscreening, Trackingstelle Sachsen-Anhalt, Fehlbildungsmonitoring, Sachsen-Anhalt an der Medizinischen Fakultät der Otto-von-Guericke-Universität, Magdeburg
| | - A. Rißmann
- Neugeborenen-Hörscreening, Trackingstelle Sachsen-Anhalt, Fehlbildungsmonitoring, Sachsen-Anhalt an der Medizinischen Fakultät der Otto-von-Guericke-Universität, Magdeburg
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Köhn A, Williams T, Vann R, Holzhauer E, Leddy J, O’Brien M, Ramisch M. Influence of density fluctuations on the O–X mode conversion and on microwave propagation. EPJ Web of Conferences 2015. [DOI: 10.1051/epjconf/20158701003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [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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Matulat P, Fabian S, Köhn A, Spormann-Lagodziski M, Lang-Roth R, Rissmann A, Gross M, am Zehnhoff-Dinnesen A. [Quality of universal newborn hearing screening results : Multicenter analysis of data recorded between 2009 and 2012 in four German states]. HNO 2014; 62:171-9. [PMID: 24557064 DOI: 10.1007/s00106-013-2817-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Bearing in mind the impending evaluation of newborn hearing screening in Germany, this study investigated whether multicenter analysis of the screening results from four German states is possible and to what extent the results meet national quality and outcome criteria. MATERIALS AND METHODS The screening data from 170 hospitals and a total of 533,150 newborns (21 % of all German newborns) from 2009 to 2012 were evaluated according to definite rules and analyzed in terms of averages, as well as over time. RESULTS During the investigated period and averaged over the hospitals, the quality criteria "percentage of screened newborns" (91.4 %) and "percentage requiring further follow-up" (5.0 %), the "day of screening" (day 4), as well as the target parameter "age at diagnosis" (4.8 months) were not met. Steady improvements were observed over time: in the last year of the evaluation, 95.3 % of children were examined; only 4.8 % required follow-up and the age at diagnosis decreased to 4.2 months. On average, 83 % of the babies were screened before day 4. The steady reduction in variance of most of the variables from the participating hospitals indicates continual improvement. CONCLUSION A multicenter analysis of screening data is possible and valid in the case of good quality data.
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Affiliation(s)
- P Matulat
- Klinik für Phoniatrie und Pädaudiologie, Universitätsklinikum Münster, Kardinal-von-Galen-Ring 10, 48149, Münster, Deutschland,
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Spillner C, Brett B, Köhn A, Rißmann A. Fragiles-X Syndrom – ein bereits perinatal relevantes Krankheitsbild! Z Geburtshilfe Neonatol 2013. [DOI: 10.1055/s-0033-1361408] [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: 10/26/2022]
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Köhn A, Götz D, Hoyer-Schuschke J, Spillner C, Vogt C, Rißmann A. 1 von 33 Schwangerschaften von Fehlbildung betroffen – Fehlbildungserfassung in Sachsen-Anhalt. Z Geburtshilfe Neonatol 2013. [DOI: 10.1055/s-0033-1361406] [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: 10/26/2022]
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Neumann L, Hentschen S, Hoyer-Schuschke J, Köhn A, Rißmann A. Korrelation prä- und postnataler Befunde in einem Krankenhaus der Schwerpunktversorgung. Z Geburtshilfe Neonatol 2013. [DOI: 10.1055/s-0033-1361409] [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: 10/26/2022]
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Lohse T, Hartmann T, Köhn A, Rißmann A. Transparenz der Umsetzung des Universellen Neugeborenen-Hörscreenings in Deutschland. Gesundheitswesen 2013; 76:623-7. [DOI: 10.1055/s-0033-1351238] [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: 10/26/2022]
Affiliation(s)
| | | | - A. Köhn
- Fehlbildungsmonitoring Sachsen-Anhalt
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Ambrosek D, Köhn A, Schulze J, Kühn O. Quantum Chemical Parametrization and Spectroscopic Characterization of the Frenkel Exciton Hamiltonian for a J-Aggregate Forming Perylene Bisimide Dye. J Phys Chem A 2012; 116:11451-8. [DOI: 10.1021/jp3069706] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- D. Ambrosek
- Institut für Physik, Universität Rostock, D-18051 Rostock, Germany
| | - A. Köhn
- Institut für Physikalische
Chemie, Universität Mainz, Duesbergweg
10-14, D-55099 Mainz, Germany
| | - J. Schulze
- Institut für Physik, Universität Rostock, D-18051 Rostock, Germany
| | - O. Kühn
- Institut für Physik, Universität Rostock, D-18051 Rostock, Germany
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Rißmann A, Köhn A, Götz D, Hoyer-Schuschke J. Schwangerschaftsausgang bei diabetischer Stoffwechsellage der Mutter – Epidemiologische Daten der Jahre 1996–2010 aus Sachsen-Anhalt. Z Geburtshilfe Neonatol 2011. [DOI: 10.1055/s-0031-1293335] [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: 10/15/2022]
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Pötzsch S, Hoyer-Schuschke J, Köhn A. Angeborene Fehlbildungen – Welche Bedeutung hat ein Fehlbildungsregister? Z Geburtshilfe Neonatol 2009. [DOI: 10.1055/s-0029-1223067] [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]
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Streng A, Köhn A, Henrich N, Grote V, Liese J. Hospitalisationen von impfpräventablen Erkrankungen (Varicella zoster-Virus, invasive Pneumokokken, Rotavirus): ICD-10-Erhebung an Kinderkliniken im Rahmen eines Bayerischen Surveillance-Projektes. Gesundheitswesen 2008. [DOI: 10.1055/s-2008-1076591] [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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Streng A, Köhn A, Piechatzek M, Grote V, Kries RV, Liese JG. Bayerisches Varizellen-Surveillance-Projekt (BaVariPro) – Erhebung von Inzidenz, Durchimpfungsrate und Hospitalisationen von Varicella Zoster-Virus-Infektionen bei Kindern und Jugendlichen. Gesundheitswesen 2008. [DOI: 10.1055/s-2008-1076592] [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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Köhn A, Piechatzek M, Streng A, Grote V, Liese J. Varizellen-Durchimpfungsrate und Einflussfaktoren bei Kindern und Jugendlichen im Raum München – Ergebnisse aus dem Bayerischen Varizellen-Surveillance-Projekt (BaVariPro). Gesundheitswesen 2008. [DOI: 10.1055/s-2008-1076577] [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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Weiler F, Köhn A, Rieder C, Klein J, Hahn HK, Peitgen HO. Kontextbezogene Visualisierung neurochirurgischer Planungsdaten. ROFO-FORTSCHR RONTG 2008. [DOI: 10.1055/s-2008-1073878] [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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Mäder M, Kolbus N, Meihorst D, Köhn A, Beuche W, Felgenhauer K. Human intestinal alkaline phosphatase-binding IgG in patients with severe bacterial infections. Clin Exp Immunol 1994; 95:98-102. [PMID: 8287614 PMCID: PMC1534623 DOI: 10.1111/j.1365-2249.1994.tb06021.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Patterns of alkaline phosphatase (AP)-binding proteins were observed in the alkaline pH range of 6.5-9.5 upon isoelectric focusing and blotting of serum from patients with inflammatory diseases. After isolation using affinity chromatography on protein A or immunoaffinity chromatography on AP coupled to cyanogen bromide (CNBr)-activated Sepharose, the AP-binding protein was identified as IgG on Western blots and in ELISA using human IgG-specific antibodies. It was shown that this IgG binds to AP from both calf (bovine) and human intestine. However, it binds neither to the human liver-bone-kidney (LBK) isoform nor to bacterial AP. Moderate reaction was observed with human placental AP. Comparing patients with various diagnoses (n = 284), AP-binding antibodies were mainly found in severe bacterial infections. They were not detected in serum from healthy blood donors (n = 300). The presence of AP-binding IgG was independent of the infected organ and the bacterial species causing infection. This antibody may be useful for discriminating bacterial from viral infection and for indicating severe bacterial inflammation.
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Affiliation(s)
- M Mäder
- Neurologische Klinik der Universität, Göttingen, Germany
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