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Veit C, Foister S, Valros A, Munsterhjelm C, Sandercock DA, Janczak AM, Ranheim B, Nordgreen J. The use of social network analysis to describe the effect of immune activation on group dynamics in pigs. Animal 2021; 15:100332. [PMID: 34392193 DOI: 10.1016/j.animal.2021.100332] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 07/01/2021] [Accepted: 07/05/2021] [Indexed: 10/20/2022] Open
Abstract
The immune system can influence social motivation with potentially dire consequences for group-housed production animals, such as pigs. The aim of this study was to test the effect of a controlled immune activation in group-housed pigs, through an injection with lipopolysaccharide (LPS) and an intervention with ketoprofen on centrality parameters at the individual level. In addition, we wanted to test the effect of time relative to the injection on general network parameters in order to get a better understanding of changes in social network structures at the group level. 52 female pigs (11-12 weeks) were allocated to four treatments, comprising two injections: ketoprofen-LPS (KL), ketoprofen-saline (KS), saline-LPS (SL) and saline-saline (SS). Social behaviour with a focus on damaging behaviour was observed continuously in 10 × 15 min bouts between 0800 am and 1700 pm 1 day before (baseline) and two subsequent days after injection. Activity was scan-sampled every 5 min for 6 h after the last injection in the pen. Saliva samples were taken for cortisol analysis at baseline and at 4, 24, 48, 72 h after the injections. A controlled immune activation affected centrality parameters for ear manipulation networks at the individual level. Lipopolysaccharide-injected pigs had a lower in-degree centrality, thus, received less interactions, 2 days after the challenge. Treatment effects on tail manipulation and fighting networks were not observed at the individual level. For networks of manipulation of other body parts, in-degree centrality was positively correlated with cortisol response at 4 h and lying behaviour in the first 6 h after the challenge in LPS-injected pigs. Thus, the stronger the pigs reacted to the LPS, the more interactions they received in the subsequent days. The time in relation to injection affected general network parameters for ear manipulation and fighting networks at the group level. For ear manipulation networks, in-degree centralisation was higher on the days following injection, thus, certain individuals in the pen received more interactions than the rest of the group compared to baseline. For fighting networks, betweenness decreased on the first day after injection compared to baseline, indicating that network connectivity increased after the challenge. Networks of tail manipulation and manipulation of other body parts did not change on the days after injection at the group level. Social network analysis is a method that can potentially provide important insights into the effects of sickness on social behaviour in group-housed pigs.
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Affiliation(s)
- C Veit
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, 0454 Oslo, Norway.
| | - S Foister
- Innovent Technology, Markethill, Turriff, Aberdeenshire AB53 4PA, United Kingdom
| | - A Valros
- Research Centre for Animal Welfare, Department of Production Animal Medicine, University of Helsinki, 00014 Helsinki, Finland
| | - C Munsterhjelm
- Research Centre for Animal Welfare, Department of Production Animal Medicine, University of Helsinki, 00014 Helsinki, Finland
| | - D A Sandercock
- Animal and Veterinary Science Research Group, Roslin Institute, Scotland's Rural College, Midlothian EH15 9RG, United Kingdom
| | - A M Janczak
- Department of Production Animal Clinical Science, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, 0454 Oslo, Norway
| | - B Ranheim
- Department of Production Animal Clinical Science, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, 0454 Oslo, Norway
| | - J Nordgreen
- Department of Paraclinical Sciences, Faculty of Veterinary Medicine, Norwegian University of Life Sciences, 0454 Oslo, Norway
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Veit C, Herrera R, Weinmayr G, Genuneit J, Windstetter D, Vogelberg C, von Mutius E, Nowak D, Radon K, Gerlich J, Weinmann T. Long-term effects of asthma medication on asthma symptoms: an application of the targeted maximum likelihood estimation. BMC Med Res Methodol 2020; 20:307. [PMID: 33327942 PMCID: PMC7739451 DOI: 10.1186/s12874-020-01175-9] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Accepted: 11/23/2020] [Indexed: 11/10/2022] Open
Abstract
Background Long-term effectiveness of asthma control medication has been shown in clinical trials but results from observational studies with children and adolescents are lacking. Marginal structural models estimated using targeted maximum likelihood methods are a novel statistiscal approach for such studies as it allows to account for time-varying confounders and time-varying treatment. Therefore, we aimed to calculate the long-term risk of reporting asthma symptoms in relation to control medication use in a real-life setting from childhood to adulthood applying targeted maximum likelihood estimation. Methods In the prospective cohort study SOLAR (Study on Occupational Allergy Risks) we followed a German subsample of 121 asthmatic children (9–11 years old) of the ISAAC II cohort (International Study of Asthma and Allergies in Childhood) until the age of 19 to 24. We obtained self-reported questionnaire data on asthma control medication use at baseline (1995–1996) and first follow-up (2002–2003) as well as self-reported asthma symptoms at baseline, first and second follow-up (2007–2009). Three hypothetical treatment scenarios were defined: early sustained intervention, early unsustained intervention and no treatment at all. We performed longitudinal targeted maximum likelihood estimation combined with Super Learner algorithm to estimate the relative risk (RR) to report asthma symptoms at SOLAR I and SOLAR II in relation to the different hypothetical scenarios. Results A hypothetical intervention of early sustained treatment was associated with a statistically significant risk increment of asthma symptoms at second follow-up when compared to no treatment at all (RR: 1.51, 95% CI: 1.19–1.83) or early unsustained intervention (RR:1.38, 95% CI: 1.11–1.65). Conclusions While we could confirm the tagerted maximum likelihood estimation to be a usable and robust statistical tool, we did not observe a beneficial effect of asthma control medication on asthma symptoms. Because of potential due to the small sample size, lack of data on disease severity and reverse causation our results should, however, be interpreted with caution.
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Affiliation(s)
- Carolin Veit
- Institute and Clinic for Occupational, Social and Environmental Medicine, LMU University Hospital Munich, Munich, Germany.,Department of Medical Informatics, Biometry and Epidemiology (IBE), Ludwig-Maximilian University Munich (LMU), Munich, Germany.,Comprehensive Pneumology Center CPC LMU Munich, member of the German Center for Lung Research (DZL), Munich, Germany
| | - Ronald Herrera
- Institute and Clinic for Occupational, Social and Environmental Medicine, LMU University Hospital Munich, Munich, Germany.,Comprehensive Pneumology Center CPC LMU Munich, member of the German Center for Lung Research (DZL), Munich, Germany
| | - Gudrun Weinmayr
- Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany
| | - Jon Genuneit
- Institute of Epidemiology and Medical Biometry, Ulm University, Ulm, Germany.,Paediatric Epidemiology, Hospital for Children and Adolescents, University of Leipzig Medical Center, Leipzig, Germany
| | - Doris Windstetter
- Institute and Clinic for Occupational, Social and Environmental Medicine, LMU University Hospital Munich, Munich, Germany.,Comprehensive Pneumology Center CPC LMU Munich, member of the German Center for Lung Research (DZL), Munich, Germany
| | - Christian Vogelberg
- Paediatric Department, University Hospital Carl Gustav Carus Dresden, TU Dresden, Dresden, Germany
| | - Erika von Mutius
- Comprehensive Pneumology Center CPC LMU Munich, member of the German Center for Lung Research (DZL), Munich, Germany.,Dr. v. Haunersches Kinderspital, LMU University Hospital Munich, Munich, Germany
| | - Dennis Nowak
- Institute and Clinic for Occupational, Social and Environmental Medicine, LMU University Hospital Munich, Munich, Germany.,Comprehensive Pneumology Center CPC LMU Munich, member of the German Center for Lung Research (DZL), Munich, Germany
| | - Katja Radon
- Institute and Clinic for Occupational, Social and Environmental Medicine, LMU University Hospital Munich, Munich, Germany.,Comprehensive Pneumology Center CPC LMU Munich, member of the German Center for Lung Research (DZL), Munich, Germany
| | - Jessica Gerlich
- Institute and Clinic for Occupational, Social and Environmental Medicine, LMU University Hospital Munich, Munich, Germany.,Comprehensive Pneumology Center CPC LMU Munich, member of the German Center for Lung Research (DZL), Munich, Germany
| | - Tobias Weinmann
- Institute and Clinic for Occupational, Social and Environmental Medicine, LMU University Hospital Munich, Munich, Germany. .,Comprehensive Pneumology Center CPC LMU Munich, member of the German Center for Lung Research (DZL), Munich, Germany.
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Engel F, Dieterle T, Schmid T, Tomschitz C, Veit C, Zuber N, Löw R, Pfau T, Meinert F. Observation of Rydberg Blockade Induced by a Single Ion. Phys Rev Lett 2018; 121:193401. [PMID: 30468597 DOI: 10.1103/physrevlett.121.193401] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2018] [Indexed: 06/09/2023]
Abstract
We study the long-range interaction of a single ion with a highly excited ultracold Rydberg atom and report on the direct observation of an ion-induced Rydberg excitation blockade mediated over tens of micrometer distances. Our hybrid ion-atom system is directly produced from an ultracold atomic ensemble via near-threshold photoionization of a single Rydberg excitation, employing a two-photon scheme that is specifically suited for generating a very low-energy ion. The ion's motion is precisely controlled by small electric fields, which allows us to analyze the blockade mechanism for a range of principal quantum numbers. Finally, we explore the capability of the ion as a high-sensitivity, single-atom-based electric field sensor. The observed ion-Rydberg-atom interaction is of current interest for entanglement generation or studies of ultracold chemistry in hybrid ion-atom systems.
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Affiliation(s)
- F Engel
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - T Dieterle
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - T Schmid
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - C Tomschitz
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - C Veit
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - N Zuber
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - R Löw
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - T Pfau
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - F Meinert
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
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Schmid T, Veit C, Zuber N, Löw R, Pfau T, Tarana M, Tomza M. Rydberg Molecules for Ion-Atom Scattering in the Ultracold Regime. Phys Rev Lett 2018; 120:153401. [PMID: 29756888 DOI: 10.1103/physrevlett.120.153401] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Indexed: 06/08/2023]
Abstract
We propose a novel experimental method to extend the investigation of ion-atom collisions from the so far studied cold, essentially classical regime to the ultracold, quantum regime. The key aspect of this method is the use of Rydberg molecules to initialize the ultracold ion-atom scattering event. We exemplify the proposed method with the lithium ion-atom system, for which we present simulations of how the initial Rydberg molecule wave function, freed by photoionization, evolves in the presence of the ion-atom scattering potential. We predict bounds for the ion-atom scattering length from ab initio calculations of the interaction potential. We demonstrate that, in the predicted bounds, the scattering length can be experimentally determined from the velocity of the scattered wave packet in the case of ^{6}Li^{+}-^{6}Li and from the molecular ion fraction in the case of ^{7}Li^{+}-^{7}Li. The proposed method to utilize Rydberg molecules for ultracold ion-atom scattering, here particularized for the lithium ion-atom system, is readily applicable to other ion-atom systems as well.
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Affiliation(s)
- T Schmid
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - C Veit
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - N Zuber
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - R Löw
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - T Pfau
- 5. Physikalisches Institut and Center for Integrated Quantum Science and Technology, Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
| | - M Tarana
- J. Heyrovský Institute of Physical Chemistry of the ASCR, v.v.i., Dolejškova 2155/3, 182 23 Prague 8, Czech Republic
| | - M Tomza
- Centre of New Technologies, University of Warsaw, Banacha 2c, 02-097 Warsaw, Poland
- Faculty of Physics, University of Warsaw, Pasteura 5, 02-093 Warsaw, Poland
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Hertle D, Lüken F, Trümner A, Veit C. [Inpatient Preventative and Rehabilitative Treatment for Informal Caregivers - An Explorative Investigation of Specific Offers in Germany]. REHABILITATION 2015; 54:146-52. [PMID: 26091491 DOI: 10.1055/s-0035-1545360] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
INTRODUCTION In line with a new law in 2012 (Pflege-Neuausrichtungs-Gesetz) a special regard to informal care givers in inpatient rehabilitation and prevention facilities was established. Thus possibilities were created to facilitate care for people requiring nursing within the rehabilitation hospital while the informal caregiver is treated. On behalf of the German Ministry of Health the BQS Institute of Quality and Patient Safety analysed what specific offers for this target group are available in the rehabilitation setting and to what extent the requirements of the new law are already implemented. METHODS To identify those specific offers for informal caregivers, a nationwide e-mail survey was conducted in 1,167 rehabilitation hospitals in Germany which was complemented with an internet research. Additionally semi-standardised interviews with 28 experts in different specialty fields as well as a literature research were conducted. RESULTS 31 rehabilitation hospitals were identified, which provide specific measures for informal caregivers and 53 hospitals which provide care for the dependent person, too (overlaps are possible). By providing those offers, the providers are in unchartered waters in regard to concepts. Usually providers are relating to already existing measures in their indication areas and extend those through specific measures. To date, a targeted allocation of informal caregivers to appropriate facilities is not established.
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Affiliation(s)
- D Hertle
- BQS-Institut für Qualität und Patientensicherheit
| | - F Lüken
- BQS-Institut für Qualität und Patientensicherheit
| | - A Trümner
- BQS-Institut für Qualität und Patientensicherheit
| | - C Veit
- BQS-Institut für Qualität und Patientensicherheit
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Stock S, Hertle D, Veit C. [Patient-centredness and Quality of Care in Germany in International Comparison - Results of a Telephone Survey of Patients in 11 Countries]. Gesundheitswesen 2014; 77:761-7. [PMID: 25268418 DOI: 10.1055/s-0034-1387757] [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: 10/24/2022]
Abstract
OBJECTIVES The study was conducted to compare the results of the perceived quality of care in 11 industrialised countries from a patient perspective. This paper reports the German results and puts them in an international perspective. METHODS In a nationwide poll a random sample of high utilising patients was surveyed between March and June 2011. 59,984 random phone numbers were generated for this purpose. Topics were access and coordination of care, patient safety and patient-centredness. RESULTS were weighted according to age, sex, education, place of birth of parents, income and size of dwelling place and further sociodemographic variables. RESULTS 1,200 patients of 2,048 contacted patients fulfilled the enrollment criteria. Approximately one third felt that overall the health-care system works well while 22% said that the system needs to be completely rebuild. Regarding access to care 22% reported financial barriers while 59% reported to be able to get an appointment the same or next day to see a doctor. With respect to patient safety patients reported increased numbers of nosocomial infections compared to 2005. Patient satisfaction with general practitioners (GPs) is exceptionally high in -Germany. CONCLUSION Compared to 10 other industrialised nations the picture is heterogeneous. In some areas Germany ranks among the top (satisfaction with GPs) while approximately every fifth surveyed patient feels the system needs to be rebuilt completely. It remains a matter of debate whether this rating regarding the reform needs of the system applies to the financing and structures of the system or the quality of care.
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Affiliation(s)
- S Stock
- Institut für Gesundheitsökonomie, Uniklinik Köln, Köln
| | - D Hertle
- Integrierte Gesundheitsversorgung, BQS Institut für Qualität und Patientensicherheit, Düsseldorf
| | - C Veit
- Integrierte Gesundheitsversorgung, BQS Institut für Qualität und Patientensicherheit, Düsseldorf
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Cheynis F, Leroy F, Ranguis A, Detailleur B, Bindzi P, Veit C, Bon W, Müller P. Combining low-energy electron microscopy and scanning probe microscopy techniques for surface science: development of a novel sample-holder. Rev Sci Instrum 2014; 85:043705. [PMID: 24784616 DOI: 10.1063/1.4871437] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We introduce an experimental facility dedicated to surface science that combines Low-Energy Electron Microscopy/Photo-Electron Emission Microscopy (LEEM/PEEM) and variable-temperature Scanning Probe Microscopy techniques. A technical challenge has been to design a sample-holder that allows to exploit the complementary specifications of both microscopes and to preserve their optimal functionality. Experimental demonstration is reported by characterizing under ultrahigh vacuum with both techniques: Au(111) surface reconstruction and a two-layer thick graphene on 6H-SiC(0001). A set of macros to analyze LEEM/PEEM data extends the capabilities of the setup.
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Affiliation(s)
- F Cheynis
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - F Leroy
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - A Ranguis
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - B Detailleur
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - P Bindzi
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - C Veit
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - W Bon
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
| | - P Müller
- Aix-Marseille Université, CNRS, CINaM UMR 7325, 13288 Marseille, France
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Veit C. Einsatz von Qualitätsindikatoren aus Routinedaten aus Sicht der BQS. Dtsch Med Wochenschr 2008. [DOI: 10.1055/s-0028-1085584] [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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Veit C. Neue Technologien in Lithium-Ionen-Batterien. CHEM-ING-TECH 2006. [DOI: 10.1002/cite.200650227] [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]
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Abstract
Myocardial ischemia is a major complication in the perioperative period, mostly in patients with high cardiac risks. After non-cardiac surgery myocardial infarction was observed in 5.6% of patients with coronary heart disease, the rate in patients with no cardiac diseases was 0.1-0.7%. We present the case of a 21-year-old ASA I male patient who underwent surgery to reconstruct the cruciate ligament of the knee. General anaesthesia was performed in combination with a femoral nerve block. After surgery the patient suffered from myocardial infarctions on the day of surgery and the 6th day after surgery. After resuscitation, thrombolysis and percutaneous transluminal coronary angioplasty (PTCA), an intraaortic balloon pump had to be temporarily implanted due to persistent cardiogenic shock.
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Affiliation(s)
- A Fippel
- Abteilung X (Anästhesiologie, Intensiv- und Notfallmedizin), Bundeswehrkrankenhaus, Hamburg.
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Heuschmann PU, Kolominsky-Rabas PL, Röther J, Misselwitz B, Lowitzsch K, Heidrich J, Hermanek P, Veit C, Sitzer M, Biegler M, Buecker-Nott HJ, Berger K. Einflussfaktoren und zeitliche Veränderung der intravenösen Thrombolysebehandlung beim Hirninfarkt in Deutschland. Ergebnisse der Arbeitsgemeinschaft Deutscher Schlaganfall Register (ADSR). Akt Neurol 2004. [DOI: 10.1055/s-2004-832989] [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: 10/28/2022]
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Affiliation(s)
- Walter Biederbick
- Inspektion des Sanitätsdienstes, Referat I 1, Bundesministerium der Verteidigung, Bonn, Germany.
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Junger A, Veit C, Klöss T. [Aspects of external quality assurance in anesthesiology--experiences in Hamburg]. Z Arztl Fortbild Qualitatssich 1999; 93:689-99. [PMID: 10666834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/15/2023]
Abstract
In 1994, external quality assurance in anaesthesia according to the German Society of Anaesthesiology and Intensive Care (DGAI) was obligatory introduced in Hamburg. Since 1992 in a pilot project and since 1994 compulsory nearly 500,000 anaesthesias were documented by 39 institutions with a standard data set issued by the DGAI and transferred to the project office of the Association for Quality Assurance (EQS) Hamburg. Comparative statistics of these data were produced at the project office. In the controlling committee and in meetings of the project participants the contents, policy and results of the project were critically analyzed and adjustments initiated whenever necessary. With an incidence of 14.1% of all anaesthesias with special occurrences (AVB), the results are in the same range compared to most other studies. To evaluate the concept of documentation the predictory power of single and combined risk assessments for the incidence of particular AVBs in elective anaesthesias were compared to the predictory power of ASA-Classification in order to reduce the parameters that had to be collected. This should lead to a positive influence on the quality of documentation. Besides one exception, no superior prediction power for AVB incidence could be demonstrated for any special risk assessment as compared with the ASA-classification. This is also true for the AVBs which are associated with high lethality. Thus, the documentation of risk factors in the core data set as predictors can be abandoned without major loss of information. The participants consider the project to be a useful support for internal improvement projects. Besides the reduction of the amount of data in quality assurance to get a core of particularly meaningful parameters the classification of the surgical procedure by the ICPM- or OPS 301-Code should be integrated into the core data set of the DGAI. It would lead to an increase in acceptance of the method and thus to an increase in the validity of its results and valuations.
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Affiliation(s)
- A Junger
- Abteilung für Anaesthesiologie und operative Intensivmedizin, Allgemeines Krankenhaus Harburg
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Junger A, Benson M, Quinzio L, Jost A, Veit C, Klöss T, Hempelmann G. [Quality documentation with an Anaesthesia Information Management System (AIMS)]. Anaesthesist 1999; 48:523-32. [PMID: 10506316 DOI: 10.1007/s001010050743] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [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: 10/28/2022]
Abstract
OBJECTIVE In 1994 the Department of Anaesthesiology and Intensive Care Medicine of the Justus Liebig University of Giessen decided to implement an Anaesthesia Information Management System (AIMS) to replace the previous hand-written documentation on paper. From 1997 until the end of 1998 the data sets of 41,393 anaesthesia procedures were recorded with the help of computers and imported into a data bank. Individual aspects and results of this data pool are presented under the aspect of how the system in its present form is able to guarantee documentation of quality according to the requirements of the German Society of Anaesthesiology and Intensive Care Medicine (DGAI). METHODS Since 1997 information on all anaesthesia procedures has been documented "online" with the anaesthesia documentation software NarkoData 4 (ProLogic GmbH, Erkrath). The data sets have been stored in a relational data bank (Oracle Corporation) and statistically processed with the help of the SQL-based program Voyant (Brossco Systems, Espoo, Finland). As an example of two adverse perioperative events (AVB) we compared incidences of "hypotension" and "nausea/vomiting", recorded by staff members into the AIMS, with the incidence of comparable events that were recorded with the help of online data during anaesthesia procedures, such as blood pressure and drug application. Since 1998 data recording has been revised constantly in department meetings; advanced training has been given. The results have been analysed critically. RESULTS In 1997 the incidence of adverse perioperative events entered manually into the system was 3.6% (grade III and higher 0.9%) and increased during 1998 to 22.2% (grade III and higher 1.9%). The frequency of anaesthesia procedures with manually documented AVBs was significantly below the incidence (determined with the help of online data) of comparable events: "hypotension" (1.8% vs. 8.5%) and "nausea/vomiting" (4.9% vs. 8.3%). CONCLUSION The current documentation of AVBs in almost any hospital is incomplete. In contrast to the hand-written procedure, the AIMS provides recorded data for evaluation and guarantees more detailed and complete quality documentation. In addition, the effort needed for documentation is reduced. Whether these data sets really describe and measure quality or not has to be evaluated. In addition it has to be considered whether different requirements (such as automatic AVB recognition for an AIMS) are advantageous for quality documentation regarding the data raster and the AVB recognition, with respect to different documentation procedures.
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Affiliation(s)
- A Junger
- Abteilung Anaesthesiologie und Operative Intensivmedizin, Justus-Liebig-Universität Giessen
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Abstract
OBJECTIVE The analysis of result variation in quality benchmarking projects in anaesthesia showed that ASA classification was often the most relevant parameter in distinction of risk groups. Thus the parallel description of the risk level of a patient both with the ASA classification and with particular risk parameters was examined critically. The hypothesis was tested that the documentation of both parameter groups in the running quality benchmarking projects does not lead to relevant information gain. As a pragmatic consequence we see the possibility to reduce the core dataset with significant reduction of the documentation workload. METHODS With machine readable protocols or online computer documentation nearly all anaesthesias in hospitals in Hamburg were documented with the DGAI core data set and transferred to the project office of EQS Hamburg since 1992. We compared the predictory power of single and combined risk assessments for the incidence of particular AVBs (grade 3 to 5) in elective anaesthesias with that of ASA-classification. RESULTS In 257,878 elective anaesthesias AVBs were documented in 14.5% of cases. Besides one exception no superior prediction power for AVB incidence could be demonstrated for any special risk assessment as compared with the ASA-classification. This is also true for the AVBs decompensated cardiac insufficiency, myocardial infarction, pulmonary embolism and cardiac arrest which are associated with high lethality. CONCLUSION We assume that the documentation of risk factors in the core data set as predictors can be abandoned without major loss of information. This would be a first step towards reduction of the amount of data in quality assurance to get a core of especially meaningful parameters. It would lead to an increase in acceptance of the method and thus to an increase in the validity of its results.
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Affiliation(s)
- A Junger
- Abteilung für Anaesthesiologie und operative Intensivmedizin, Allgemeines Krankenhaus Harburg
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Abstract
PURPOSE Since 1992 421,851 anaesthesias were documented by 39 institutes with a standard dataset issued by the German Society of Anaesthesiology and Intensive Care (DGAI). The project was run by the Association for Quality Assurance (EQS) in Hamburg. Some results of the evaluation of this datapool are presented questioning the feasibility of the project to support improvement processes within the participating institutions and which adjustments should be done considering these experiences. METHODS Data from machine-readable protocols and documentation software representing all anaesthesia cases were recorded since 1992 in a pilot project and since 1994 compulsory with a standard dataset issued by the DGAI. Comparing statistics of these data was produced at the EQS project office. In the steering committee and in meetings of the project participants the contents, policy and results of the project office. In the steering committee and in meetings of the project were critically analysed and adjustments initiated whenever necessary. Validity of data and feasibility of the method used was also questioned on the background of comparable studies. RESULTS With an incidence of 14.1% of all anaesthesias with special occurrences (AVB) the results are in the same range if compared with most other studies. However, documentation of data is not complete. This is assumed to be due to the large size of the dataset with 112 items and the additional workload associated with it. Nevertheless the participants mostly consider the project to be a very useful support for internal improvement projects. CONCLUSION The project method used so far is not mature yet. The data set must be streamlined and rendered more concise, quality indicators should be defined and tested, and the availability of statistically proven limits of tolerance should be the immediate aims in the further development of the project.
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Affiliation(s)
- A Junger
- Abteilung für Anästhesiologie und Operative Intensivmedizin, Justus-Liebig-Universität Giessen
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Veit C, Tecklenburg A. Computing tools for quality assurance. Qual Assur Health Care 1992; 4:3-8. [PMID: 1576333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Computing systems for quality assessment in the operative departments, in anaesthesia and intensive care were developed at the Altona General Hospital, Hamburg. The main goals were to support quality assurance as a tool for the medical staff which they can use actively in their routine work and to reorganize uneconomical forms of clinical data handling. The most important characteristics of the tools presented here are flexibility of the databases and applications, openness to individual configurations and integration of quality assessment, activity audits and clinical routine under the primacy of medical documentation. Research is aimed at new forms of medical documentation, problem-oriented presentation and focusing of clinical data in the context of quality assurance programs.
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Affiliation(s)
- C Veit
- AKAPULCO, Allgemeines Krankenhaus Altona, Hamburg, Federal Republic of Germany
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Rieder W, Veit C, Gauster E. Interaction of magnetically blown break arcs with insulating walls in the contact region of interrupters. ACTA ACUST UNITED AC 1992. [DOI: 10.1109/33.206939] [Citation(s) in RCA: 7] [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: 11/08/2022]
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Lakatua DJ, Haus E, Halberg F, Labrosse KR, Veit C, Sackett-Lundeen L. Circadian rhythm in mammary cytoplasmic estrogen receptor content of Balb/C female mice with and without pituitary isografts. Chronobiol Int 1986; 3:213-9. [PMID: 3677205 DOI: 10.3109/07420528609079539] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Cytoplasmic estrogen receptors were determined by the dextran-coated charcoal method in inguinal breast tissue of three groups of Balb/C female mice 6-8 weeks following subcutaneous implantation into the intact animals of three pituitary glands and three pieces of skeletal muscle (group I), three pituitary glands and three segments of hypothalamic tissue (group II), or three pieces of skeletal muscle (group III) obtained from animals of the same inbred strain as control. A circadian rhythm in estrogen receptor content was statistically quantified by cosinor analysis in the muscle implanted control and the pituitary and hypothalamic implant groups. In the pituitary and muscle implant group the circadian rhythm is of borderline significance with a P-value between 0.05 and 0.10. The timing (acrophase) and extent of change (amplitude) are similar in all three treatment groups. The average receptor content (MESOR) in the two pituitary-implanted groups, which in previous studies were shown to have an increased breast cancer incidence is about twice that of the control group. The reduction in the pituitary induced breast cancer rate by hypothalamic tissue addition to a cancer incidence between the animals with pituitary and muscle isograft and the mice carrying no pituitary at all has also been shown previously in this strain of mice and is not reflected in receptor content.
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Affiliation(s)
- D J Lakatua
- Department of Pathology, St. Paul-Ramsey Medical Center/Ramsey Clinic, Minnesota 55101
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Kleihues P, Hodgson RM, Veit C, Schweinsberg F, Wiessler M. DNA modification and repair in vivo: towards a biochemical basis of organ-specific carcinogenesis by methylating agents. Basic Life Sci 1983; 24:509-29. [PMID: 6860273 DOI: 10.1007/978-1-4684-4400-1_27] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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21
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Kleihues P, Veit C, Wiessler M, Hodgson RM. DNA methylation by N-nitrosomethylbenzylamine in target and non-target tissues of NMRI mice. Carcinogenesis 1981; 2:897-9. [PMID: 7296772 DOI: 10.1093/carcin/2.9.897] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Adult female NMRI mice received a single i.p injection of N-nitroso(methyl-14C)methylbenzylamine (2.5 mg/kg body weight). Multiple weekly applications of such a dose, by this route, have previously been shown to induce lung adenomas and forestomach carcinomas in all experimental animals. After a survival time of 6 h, DNA was isolated from various tissues and analysed for methylated purines by separation of the acid hydrolysate on Sephasorb columns. Highest concentrations of 7-methylguanine and 06-methylguanine were present in hepatic DNA, followed by lung and forestomach. DNA methylation in the oesophagus was only 21% less than in forestomach. Since both tissues develop a high tumour incidence after oral administration of N-nitrosomethylbenzylamine (MBN), this observation suggests that despite their anatomical similarities the level of DNA modification required for malignant transformation differs considerably in these tissue. In the remaining organs, DNA alkylation was either considerably less (colon, glandular stomach, kidney) or not detectable (small intestine, spleen). These date indicate that following i.p. injection in mice, MBN is preferentially metabolised in a non-target organ (liver). Among the various other tissues investigated, highest levels of initial DNA methylation were present in forestomach and lung, i.e., the principal target organs of MBN for this route of application.
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Ritter K, Veit C. [The apoplexy of the labyrinth (author's transl)]. Laryngol Rhinol Otol (Stuttg) 1977; 56:346-50. [PMID: 140982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Owing to the morphological, physiological and pathophysiological similarities in the vasculature of the brain and the inner ear, the term apoplexy can also be applied to the inner ear. The apoplexy of the labyrinth is defined as an acute and severe panlabyrinthic disturbance with sudden hearing loss or deafness in association with vestibular functional disorders. The apoplexy may occur after hemorrhage as a result of inner ear blood vessel ruptures or after malacias following localised ischemias just as it occurs in the brain. Treatment of such cases were carried out by application of high doses of cortison. The prognosis of these inner ear disturbances is unfavourable.
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Lange S, Veit C, Hegel U, Gutsche U. [Effect of amiloride on electrolyte transport in the rat colon and its dependency from mineral corticoids]. Endokrinologie 1974; 63:271-8. [PMID: 4848566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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