44 results on '"Khosrawi P"'
Search Results
2. A Teaching Framework for the Methodically Versatile DSR Education of Master's Students
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Schlimbach, Ricarda, Khosrawi-Rad, Bijan, Grogorick, Linda, Becker, Felix, Strohmann, Timo, Siemon, Dominik, and Robra-Bissantz, Susanne
- Abstract
Design Science Research (DSR) has become a widespread paradigm in the Information Systems (IS) discipline to design and evaluate novel artifacts for relevant problems in a scientifically rigorous manner. With its potential to complement the traditional IS curriculum, DSR education is gaining popularity in academia, despite still being in its infancy. Our contribution applies DSR for designing and evaluating a DSR teaching framework (TF) derived from reused and expanded design principles from literature. Our approach mediates the paradigm's methodical versatility to master's students, empowering them to evaluate and create their own DSR projects interactively. We evaluated our DSR TF in a workshop with DSR educators from three countries and six universities to discuss its applicability for reuse. Additionally, we surveyed former course participants to gather their feedback and reflect on their experiences.
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- 2023
3. A generative adversarial network approach to calibration of local stochastic volatility models
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Cuchiero, Christa, Khosrawi, Wahid, and Teichmann, Josef
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Quantitative Finance - Computational Finance ,Mathematics - Optimization and Control ,Statistics - Machine Learning - Abstract
We propose a fully data-driven approach to calibrate local stochastic volatility (LSV) models, circumventing in particular the ad hoc interpolation of the volatility surface. To achieve this, we parametrize the leverage function by a family of feed-forward neural networks and learn their parameters directly from the available market option prices. This should be seen in the context of neural SDEs and (causal) generative adversarial networks: we generate volatility surfaces by specific neural SDEs, whose quality is assessed by quantifying, possibly in an adversarial manner, distances to market prices. The minimization of the calibration functional relies strongly on a variance reduction technique based on hedging and deep hedging, which is interesting in its own right: it allows the calculation of model prices and model implied volatilities in an accurate way using only small sets of sample paths. For numerical illustration we implement a SABR-type LSV model and conduct a thorough statistical performance analysis on many samples of implied volatility smiles, showing the accuracy and stability of the method., Comment: Replacement for previous version: Major update of previous version to match the content of the published version
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- 2020
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4. Pilot study of an interprofessional pediatric mechanical ventilation educational initiative in two intensive care units
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Mehrzai, Pazun, Höfeler, Thormen, Ebenebe, Chinedu Ulrich, Moll-Khosrawi, Parisa, Demirakça, Süha, Vettorazzi, Eik, Bergers, Marlies, Lange, Mandy, Dreger, Sabine, Maruhn, Hanna, Singer, Dominique, and Deindl, Philipp
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- 2023
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5. Growth Hacking – Der Schlüssel zu beschleunigtem Wachstum für Startups?
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Khosrawi-Rad, Bijan, Schlimbach, Ricarda, and Asghari, Reza
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- 2022
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6. Quo Vadis: Auf dem Weg zu Ethik-Guidelines für den Einsatz KI-basierter Lern-Companions in der Lehre?
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Schlimbach, Ricarda, Khosrawi-Rad, Bijan, and Robra-Bissantz, Susanne
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- 2022
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7. Virtual reality as a teaching method for resuscitation training in undergraduate first year medical students during COVID-19 pandemic: a randomised controlled trial
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Moll-Khosrawi, Parisa, Falb, Alexander, Pinnschmidt, Hans, Zöllner, Christian, and Issleib, Malte
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- 2022
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8. Evaluation of dynamic F wave parameters before and after physical activity in normal population
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Khosrawi, Saeid, Haghighat, Shila, and Hamedfar, Hadi
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- 2022
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9. Local Injection of 5% Dextrose Versus Triamcinolone in Carpal Tunnel Syndrome: a Randomized Clinical Trial
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Aghaei, Safoura, Khosrawi, Saeid, Hoseini, Shervin Ghaffari, Khosravi, Maryam, and Maghroori, Razieh
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- 2022
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10. Flipped learning enhances non-technical skill performance in simulation-based education: a randomised controlled trial
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Moll-Khosrawi, Parisa, Zöllner, Christian, Cencin, Nadine, and Schulte-Uentrop, Leonie
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- 2021
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11. Correlation of medical students' situational motivation and performance of non-technical skills during simulation-based emergency training
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Schulte-Uentrop, Leonie, Cronje, Jonathan S., Zöllner, Christian, Kubitz, Jens C., Sehner, Susanne, and Moll-Khosrawi, Parisa
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- 2020
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12. Anaesthesiology students’ Non-Technical skills: development and evaluation of a behavioural marker system for students (AS-NTS)
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Moll-Khosrawi, Parisa, Kamphausen, Anne, Hampe, Wolfgang, Schulte-Uentrop, Leonie, Zimmermann, Stefan, and Kubitz, Jens Christian
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- 2019
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13. Game-inspired Pedagogical Conversational Agents: A Systematic Literature Review.
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Khosrawi-Rad, Bijan, Grogorick, Linda, and Robra-Bissantz, Susanne
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LITERATURE reviews ,ARTIFICIAL intelligence ,GAMIFICATION ,EVIDENCE gaps ,KNOWLEDGE base ,PHYSIOLOGICAL adaptation ,BIOLOGICALLY inspired computing - Abstract
Pedagogical conversational agents (PCAs) are an innovative way to help learners improve their academic performance via intelligent dialog systems. However, PCAs have not yet reached their full potential. They often fail because users perceive conversations with them as not engaging. Enriching them with game-based approaches could contribute to mitigating this issue. One could enrich a PCA with game-based approaches by gamifying it to foster positive effects, such as fun and motivation, or by integrating it into a game-based learning (GBL) environment to promote effects such as social presence and enable individual learning support. We summarize PCAs that are combined with game-based approaches under the novel term "game-inspired PCAs". We conducted a systematic literature review on this topic, as previous literature reviews on PCAs either have not combined the topics of PCAs and GBL or have done so to a limited extent only. We analyzed the literature regarding the existing design knowledge base, the game elements used, the thematic areas and target groups, the PCA roles and types, the extent of artificial intelligence (AI) usage, and opportunities for adaptation. We reduced the initial 3,034 records to 50 fully coded papers, from which we derived a morphological box and revealed current research streams and future research recommendations. Overall, our results show that the topic offers promising application potential but that scholars and practitioners have not yet considered it holistically. For instance, we found that researchers have rarely provided prescriptive design knowledge, have not sufficiently combined game elements, and have seldom used AI algorithms as well as intelligent possibilities of user adaptation in PCA development. Furthermore, researchers have scarcely considered certain target groups, thematic areas, and PCA roles. Consequently, our paper contributes to research and practice by addressing research gaps and structuring the existing knowledge base. [ABSTRACT FROM AUTHOR]
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- 2023
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14. Growth Hacking – Der Schlüssel zu beschleunigtem Wachstum für Startups?
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Khosrawi-Rad, Bijan, Schlimbach, Ricarda, and Asghari, Reza
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Startups verfolgen in ihrer Anfangsphase das Ziel, schnell zu wachsen, um sich einen großen Kundenstamm aufzubauen und sich langfristig am Markt behaupten zu können. Während die Digitalisierung einen schnellen Markteinstieg ermöglicht, ist es in der New Economy für junge Unternehmen mit begrenzten Ressourcen jedoch schwierig, von potenziellen Kunden wahrgenommen zu werden sowie eine kritische Masse an Nutzern zu erreichen. Growth Hacking ist der Oberbegriff für verschiedene kreative, technische und zugleich kostengünstige Methoden zur Wachstumsbeschleunigung. Bislang bestehen jedoch noch wenig wissenschaftlich gesicherte Erkenntnisse über die Potenziale des Growth Hackings sowie dessen tatsächliche Auswirkungen auf das Unternehmenswachstum. Deshalb untersucht dieser Beitrag auf Basis von neun Experteninterviews den Nutzen und die Auswirkungen des Growth Hackings für Startups in der Wachstumsphase. Zudem werden aus den gewonnenen Erkenntnissen konkrete Handlungsempfehlungen für die praktische Anwendung des Growth Hackings abgeleitet. Der Beitrag schließt mit einer Zusammenfassung und gibt Impulse für weitere Forschung in diesem Bereich.
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- 2023
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15. AnaesthesioLOGbook ICinnovative curriculum Entwicklung eines innovativen und kompetenzbasierten Weiterbildungscurriculums in der Anästhesiologie am Universitätsklinikum Hamburg-Eppendorf.
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Ganzhorn, A., Zöllner, C., Baumann, D., Küllmei, J., Boutchkova, K., Schulte-Uentrop, L., and Moll-Khosrawi, P.
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EXPERIMENTAL design ,ANESTHESIOLOGY ,ACADEMIC medical centers ,RESEARCH methodology ,RESEARCH methodology evaluation ,MEDICAL students ,MOBILE apps ,RATING of students ,OUTCOME-based education ,MASTERS programs (Higher education) ,CURRICULUM planning ,EDUCATIONAL outcomes - Abstract
Copyright of Anaesthesiologie & Intensivmedizin is the property of DGAI e.V. - Deutsche Gesellschaft fur Anasthesiologie und Intensivmedizin e.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2023
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16. Unklarer Milztumor bei Rektumkarzinom
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Khosrawi, P., Bollweg, L., Niendorf, A., and Sailer, M.
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- 2014
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17. Analysis of Potential Biomarkers and Modifier Genes Affecting the Clinical Course of CLN3 Disease
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Lebrun, Anne-Hélène, Moll-Khosrawi, Parisa, Pohl, Sandra, Makrypidi, Georgia, Storch, Stephan, Kilian, Dirk, Streichert, Thomas, Otto, Benjamin, Mole, Sara E., Ullrich, Kurt, Cotman, Susan, Kohlschütter, Alfried, Braulke, Thomas, and Schulz, Angela
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- 2011
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18. Development and validation of a postgraduate anaesthesiology core curriculum based on Entrustable Professional Activities: a Delphi study
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Moll-Khosrawi, P, Ganzhorn, A, Zöllner, C, Schulte-Uentrop, L, Moll-Khosrawi, P, Ganzhorn, A, Zöllner, C, and Schulte-Uentrop, L
- Abstract
Background: Postgraduate training curricula should not be based on time-spans or predefined numbers of performed procedures. One approach to link competencies to clinical tasks is the concept of Entrustable Professional Activities (EPA). The goal of this study was the definition, ranking and validation of EPAs for anaesthesiology postgraduate training and the creation of an anaesthesiologic core curriculum. Methods: Anaesthesiologists of different levels of training participated in the study (single-center, cross-sectional) . First, an expert group defined a preliminary list of EPAs. Then a first Delphi round (n= 47 participants) was applied to identify daily anaesthesiology tasks with the goal to define EPAs. From the first Delphi round a new set of EPAs was defined, using the template and mapping method. Through an alignment process, conducted by the expert group, the preliminary EPAs and the new set of EPAs from the first Delphi round were summarised into a new list of EPAs. This list was presented to the study participants in a second Delphi round (n=80 participants), with the goal to validate and rank each EPA and to define the year of entrustment. For this purpose, participants were asked in the second Delphi round if each EPA should be included into an anaesthesiology core curriculum and in which year of training entrustment should take place. Furthermore, they were asked to rank each EPA on a numeric scale, defining its importance. From this numeric scale, the content validity index (CVI) for each EPA was calculated.Consensus of the results from the second Delphi round was calculated, using the one-way random effects model to calculate Intra-Class-Correlations (ICC). Percentages of agreement among the whole set of EPAs of this study and a previously published set of EPAs were computed.Results: A core-curriculum comprising of 39 EPAs was developed. The EPAs were subdivided into superior/high and inferior/low scoring EPAs, reflecting their importance and were, Hintergrund: Postgraduelle Weiterbildungscurricula sollten sich weder an Zeiten, noch an vorgegebenen Richtzahlen von durchgeführten Prozeduren orientieren. Ein vielversprechender Ansatz, um kompetenzbasierte Curricula in den klinischen Alltag zu integrieren, ist das Konzept der Entrustable Professional Activities (EPA). Methode: Die Teilnehmer dieser monozentrischen Querschnittsstudie waren Anästhesiologen verschiedener Ausbildungsgrade. Im ersten Schritt wurde durch eine Expertengruppe eine vorläufige Liste von EPAs definiert. Im Anschluss wurde die erste Delphi-Runde (N=47 Teilnehmer) durchgeführt, um alltägliche anästhesiologische Tätigkeiten zu identifizieren. Aus den Ergebnissen der ersten Delphi-Runde wurde durch die Mapping-Methode und durch eine Template-Analyse eine weitere Liste an EPAs definiert. Diese Liste wurde den Studienteilnehmern in einer zweiten Delphi-Runde (N=80 Teilnehmer) mit dem Ziel präsentiert, jede EPA zu validieren, eine Reihung vorzunehmen und das Jahr, in welchem diese anvertraut werden sollte, zu definieren. Dazu wurden die Teilnehmer in der zweiten Runde zu jeder EPA befragt, ob diese Teil eines anästhesiologischen Kerncurriculums sein sollte und in welchem Jahr der Weiterbildung diese anvertraubar sein sollte. Desweiteren wurden die Teilnehmer gebeten, jede EPA auf einer numerischen Skala hinsichtlich ihrer Relevanz zu bewerten. Aus den Ergebnissen der numerischen Skala wurde der Content Validity Index (CVI) berechnet. Die Übereinstimmung der Ergebnisse in der zweiten Delphi-Runde wurde untersucht, indem das Paneldatenmodell angewendet wurde, um die Intraklassen-Korrelation (ICC) zu berechnen. Weiterhin wurde die prozentuale Übereinstimmung zwischen den EPAs dieser Studie und bereits publizierten EPAs berechnet. Ergebnisse: Ein Kerncurriculum bestehend aus 39 EPAs wurde entwickelt. Die EPAs wurden entsprechend ihrer Relevanz in eine hoch und niedrig bewertete Gruppe unterteilt. Ferner wurde das Weiterbildungsjahr festgelegt, in welc
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- 2020
19. Extracorporeal Shock Wave Therapy Combined With Oral Medication and Exercise for Chronic Low Back Pain: A Randomized Controlled Trial.
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Taheri, Parisa, Khosrawi, Saeed, and Ramezani, Mitra
- Abstract
To compare extracorporeal shock wave therapy combined with oral medication and an exercise program vs sham treatment with medication and exercise for the treatment of chronic low back pain (CLBP). Randomized controlled trial. Outpatient clinic at a university hospital. Eligibility criteria were age older than 18 years and duration of CLBP exceeding 3 months. Exclusion criteria were concurrent treatment or history of surgery for CLBP, cancer, fractures, infections, and disk degeneration. The intervention group received extracorporeal shock wave therapy once a week for 4 weeks along with oral medications and an exercise program. The control group received sham extracorporeal shock wave therapy along with oral medications and an exercise program. Visual analog scale and Oswestry Disability Index (ODI) were used to assess pain and disability at baseline and after 3 months. The pain score in the intervention group (N=16) was 6.6 at baseline and 3.0 after 1 month (P <.0001) and 1.8 after 3 months (P <.0001). In the control group (N=16), the pain score was 6.8 at baseline, 4.6 after 1 month (P <.0001), and 1.1 after 3 months (P <.0001). ODI scores decreased significantly in both groups compared with baseline values (first month: P <.001, third month: P <.05). The mean ODI score did not differ significantly between the groups (P =.942). Extracorporeal shock wave therapy combined with oral medication and exercise was safe and effective in the short-term treatment of chronic low back pain. • Extracorporeal shockwave therapy significantly alleviated the pain and disability score in patients with low back pain within the first month after the intervention compared with the control group. • The effect of extracorporeal shockwave therapy to relieve the pain and disability in patients with low back pain was similar to the control group. • Extracorporeal shockwave therapy would probably be useful to control the pain and disability in a short period of time. [Display omitted] [ABSTRACT FROM AUTHOR]
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- 2021
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20. RETRACTED: Does Low-Level Laser Photobiomodulation Improve Neurosensory Recovery After Orthognathic Surgery? A Clinical Trial With Blink Reflex.
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Haghighat, Abbas, Khosrawi, Saeid, Tamizifar, Alireza, and Haghighat, Maryam
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This article has been retracted: please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor-in-Chief. The article includes material that had already appeared in de Oliveira RF, da Silva AC, Simoes A, Youssef MN, de Freitas PM. Laser Therapy in the Treatment of Paresthesia: A Retrospective Study of 125 Clinical Cases. Photomed Laser Surg. 2015 Aug; 33(8)415-23. doi: 10.1089/pho.2015.38888. PMID:26226172 in the journal Photomedicine and Laser Surgery by Mary Ann Liebert Publishing. Any re-use of any material should be appropriately cited and published with permission of any relevant copyright owner. As such this article represents a misuse of the scientific publishing system. Apologies are offered to readers of the journal that this was not detected during the submission process. [ABSTRACT FROM AUTHOR]
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- 2021
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21. E'Lyte Entwicklung und Validierung eines strukturierten Lehr- und Weiterbildungscurriculums der Anästhesiologie am Universitätsklinikum Hamburg-Eppendorf (UKE).
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Moll-Khosrawi, P., Schubert, A.-M., Kamphausen, A., Schmeck, J., Zöllner, C., and Schulte-Uentrop, L.
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Copyright of Anaesthesiologie & Intensivmedizin is the property of DGAI e.V. - Deutsche Gesellschaft fur Anasthesiologie und Intensivmedizin e.V. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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- 2020
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22. Halophilic n-alkane utilizing yeast from the Arabian gulf
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Pal, H. S., Khosrawi, L., and Bond, C.
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- 1979
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23. Ecological study of fungi in the tidal mud-flats of Kuwait
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El-Wahid, A., Moustafa, F., and Khosrawi, L. K.
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- 1982
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24. Vortex‐Wide Detection of Large Aspherical NAT Particles in the Arctic Winter 2011/12 Stratosphere
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Woiwode, W., Höpfner, M., Bi, L., Khosrawi, F., and Santee, M. L.
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Micron‐sized HNO3‐containing particles in polar stratospheric clouds are known to denitrify the polar winter stratosphere and support chemical ozone loss. We show that populations of nitric acid trihydrate (NAT) particles with volume‐equivalent median radii of 3–7 μm can be detected vortex‐wide by means of infrared limb sounding. Key for detection are the applied optical characteristics of highly aspherical particles consisting of the β‐NAT phase. Spectroscopic signatures and ambient conditions of detected populations show that these particles play a key role in denitrification of the Arctic winter stratosphere. Complementary gas‐phase HNO3observations indicate collocated highly efficient HNO3sequestration within days and are consistent with measured spectral signals of populations of large NAT particles. High amounts of condensed gas‐phase equivalent HNO3exceeding 10 ppbv and long persistence of detected populations, despite expected gravitational settling, imply that our understanding of the particles is incomplete. In the past, micron‐sized HNO3‐containing particles characterized by significant gravitational settling and denitrifying the polar stratosphere were postulated to explain observed HNO3‐distributions in the polar stratosphere. The long‐sought large nitric acid trihydrate particles were observed for the first time about 20 years ago. However, important aspects of these particles remained unclear. A decade later, field observations of these particles were found to be not compatible with established model simulations and question our understanding of polar stratospheric chemistry. Here, we present a new method to detect such populations of HNO3‐containing particles by using infrared limb observations. Our study contributes redundant spectral and thermodynamic evidence for the particle composition and furthermore indications of particle shape. Based on complementary observations, we track populations of large nitric acid trihydrate particles during the Arctic winter 2011/12. We find rapid particle growth, highly efficient sequestration of gas‐phase HNO3, and at the same time unexpectedly long persistence times of the observed populations. All of these aspects are not captured by state‐of‐the‐art model simulations reported in the literature. Thus, our method provides the prerequisite to test and optimize model simulations of these particles during entire winters, with the goal to improve future projections of polar stratospheric ozone. Populations of aspherical nitric acid trihydrate particles with median radii ≥3 μm can be detected vortex‐wideThe populations grow fast and consume high amounts of gas‐phase HNO3High amounts of condensed HNO3and long persistence of detected populations are inconsistent with model simulations
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- 2019
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25. Statistical properties of the jNCL scoring system according to Kohlschütter (1988)
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Barkmann, C, primary, Moll-Khosrawi, P, additional, Kilian, D, additional, Kohlschütter, A, additional, and Schulz, A, additional
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- 2012
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26. High phenotype variability in CLN3 patients with identical genotype
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Schulz, A, primary, Moll-Khosrawi, P, additional, Kilian, D, additional, Braulke, T, additional, and Kohlschütter, A, additional
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- 2010
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27. Effect of Neurofeedback and Electromyographic-Biofeedback Therapy on Improving Hand Function in Stroke Patients.
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Rayegani, S. M., Raeissadat, S. A., Sedighipour, L., Rezazadeh, I. Mohammad, Bahrami, M. H., Eliaspour, D., and Khosrawi, S.
- Abstract
Purpose: The aim of the present study was to evaluate the effect of applying electroencephalogram (EEG) biofeedback (neurobiofeedback) or electromyographic (EMG) biofeedback to conventional occupational therapy (OT) on improving hand function in stroke patients. Methods: This study was designed as a preliminary clinical trial. Thirty patients with stroke were entered the study. Hand function was evaluated by Jebsen Hand Function Test pre and post intervention. Patients were allocated to 3 intervention cohorts: (1) OT, (2) OT plus EMG-biofeedback therapy, and (3) OT plus neurofeedback therapy. All patients received 10 sessions of conventional OT. Patients in cohorts 2 and 3 also received EMG-biofeedback and neurofeedback therapy, respectively. EMG-biofeedback therapy was performed to strengthen the abductor pollicis brevis (APB) muscle. Neurofeedback training was aimed at enhancing sensorimotor rhythm after mental motor imagery. Results: Hand function was improved significantly in the 3 groups. The spectral power density of the sensorimotor rhythm band in the neurofeedback group increased after mental motor imagery. Maximum and mean contraction values of electrical activities of the APB muscle during voluntary contraction increased significantly after EMG-biofeedback training. Conclusion: Patients in the neurofeedback and EMG-biofeedback groups showed hand improvement similar to conventional OT. Further studies are suggested to assign the best protocol for neurofeedback and EMG-biofeedback therapy. [ABSTRACT FROM AUTHOR]
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- 2014
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28. Retraction notice to: Does Low-Level Laser Photobiomodulation Improve Neurosensory Recovery After Orthognathic Surgery? A Clinical Trial With Blink Reflex [J Oral Maxillofacial Surg 79 (2021) 685-693].
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Haghighat, Abbas, Khosrawi, Saeid, Tamizifar, Alireza, and Haghighhat, Maryam
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- 2021
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29. Effects of Dry Needling and Low-Power Laser for the Treatment of Trigger Points in the Upper Trapezius Muscle: A Randomized Clinical Trial
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Ansari, Mohammadreza, Baradaran Mahdavi, Sadegh, Vahdatpour, Babak, Lahijanian, Atieh, and Khosrawi, Saeid
- Abstract
The purpose of this study was to compare the effect of low-power laser therapy, dry needling, and exercise therapy on treating patients with neck and back pain and a diagnosis of the myofascial trigger points in the upper trapezius muscle.
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- 2022
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30. A Lagrangian Perspective on Stable Water Isotopes During the West African Monsoon
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Diekmann, Christopher J., Schneider, Matthias, Knippertz, Peter, Vries, Andries J., Pfahl, Stephan, Aemisegger, Franziska, Dahinden, Fabienne, Ertl, Benjamin, Khosrawi, Farahnaz, Wernli, Heini, and Braesicke, Peter
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We present a Lagrangian framework for identifying mechanisms that control the isotopic composition of mid‐tropospheric water vapor in the Sahel region during the West African Monsoon 2016. In this region mixing between contrasting air masses, strong convective activity, as well as surface and rain evaporation lead to high variability in the distribution of stable water isotopologues. Using backward trajectories based on high‐resolution isotope‐enabled model data, we obtain information not only about the source regions of Sahelian air masses, but also about the evolution of H2O and its isotopologue HDO (expressed as δD) along the pathways of individual air parcels. We sort the full trajectory ensemble into groups with similar transport pathways and hydro‐meteorological properties, such as precipitation and relative humidity, and investigate the evolution of the corresponding paired {H2O, δD} distributions. The use of idealized process curves in the {H2O, δD} phase space allows us to attribute isotopic changes to contributions from (a) air mass mixing, (b) Rayleigh condensation during convection, and (c) microphysical processes depleting the vapor beyond the Rayleigh prediction, i.e., partial rain evaporation in unsaturated and isotopic equilibration in saturated conditions. Different combinations of these processes along the trajectory ensembles are found to determine the final isotopic composition in the Sahelian troposphere during the monsoon. The presented Lagrangian framework is a powerful tool for interpreting tropospheric water vapor distributions. In the future, it will be applied to satellite observations of {H2O, δD} over Africa and other regions in order to better quantify characteristics of the hydrological cycle. New Lagrangian framework to attribute variability in {H2O, δD} distributions to air mass mixing and phase changes of waterApplication to West African Monsoon season 2016 shows characteristic mixing and precipitation effects along trajectoriesNew framework can be used for the interpretation of satellite and in‐situ observations, and for model validation in future work New Lagrangian framework to attribute variability in {H2O, δD} distributions to air mass mixing and phase changes of water Application to West African Monsoon season 2016 shows characteristic mixing and precipitation effects along trajectories New framework can be used for the interpretation of satellite and in‐situ observations, and for model validation in future work
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- 2021
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31. Potential of Mid‐tropospheric Water Vapor Isotopes to Improve Large‐Scale Circulation and Weather Predictability
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Toride, Kinya, Yoshimura, Kei, Tada, Masataka, Diekmann, Christopher, Ertl, Benjamin, Khosrawi, Farahnaz, and Schneider, Matthias
- Abstract
Recent satellite techniques have uncovered detailed tropospheric water vapor isotope patterns on a daily basis, yet the significance of water isotopes on weather forecasting has remained largely unknown. Here, we perform a proof‐of‐concept observing system simulation experiment to show that mid‐tropospheric water isotopes observed by the Infrared Atmospheric Sounding Interferometer (IASI) can substantially improve weather forecasts through non‐local impacts on the convective heating structure and large‐scale circulation. Assimilating IASI isotopes can improve wind, humidity, and temperature fields by more than 10% at mid‐troposphere compared to only assimilating conventional non‐isotopic observations. These improvements are about two‐thirds of assimilating simultaneous IASI water vapor observations. The improvements can be attributed more to thermodynamic (phase change) effects than dynamic (transport) effects of water isotopes. Furthermore, isotopic observations produce additional 3%–4% improvements to the fields constrained by the conventional observations and simultaneous IASI water vapor observations, demonstrating the unique characteristics of water isotopes. Accurate weather forecasting has tremendous socio‐economic benefits by saving lives from natural hazards and affecting numerous sectors including water resources, energy, and agriculture. Although recent satellite techniques have enabled observing detailed water isotope patterns (e.g., HDΟ and Η218O) in the atmosphere, it has not been incorporated in operational weather forecasting. Here, we show that water isotopes can substantially improve weather forecasts by improving the heating structure and large‐scale circulation. Satellite‐observed isotopes can improve wind, humidity, and temperature fields up to 3%–4% compared to utilizing conventional non‐isotopic observations and concurrent water vapor observations by the same satellite. We anticipate that our results will facilitate further modeling developments in isotopic processes and benefit the societal sectors by improving operational weather forecasting. First study to show the impacts of assimilating water isotopic observations in addition to conventional non‐isotopic observationsAssimilating water isotopes can produce additional improvements even when concurrent water vapor observations are assimilatedWind, humidity, and temperature fields can be improved by 3%–4% through unique isotopic effects First study to show the impacts of assimilating water isotopic observations in addition to conventional non‐isotopic observations Assimilating water isotopes can produce additional improvements even when concurrent water vapor observations are assimilated Wind, humidity, and temperature fields can be improved by 3%–4% through unique isotopic effects
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- 2021
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32. Understanding how the motivational dimension of learning is influenced by clinical teaching in medical education: A prospective cohort study
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Moll-Khosrawi, Parisa, Cronje, Jonathan Steven, Zöllner, Christian, Kubitz, Jens Christian, and Schulte-Uentrop, Leonie
- Abstract
Many changes of medical curricula have been conducted in the past years. Based on learning psychology, three dimensions of learning have to be covered, in order to create the best possible curricula: Cognitive, metacognitive and motivational. The metacognitive and cognitive dimension (what/how to teach) have always been considered and the motivational dimension has been neglected, although the importance and benefits of motivation in learning have been emphasized repeatedly. One way to influence motivation in medical curricula are the teaching formats, as it has been shown that the construction of a curriculum can influence students’ motivation. So far, evidence about the motivational effects of teaching formats are scarce.
- Published
- 2021
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33. ENHANCEMENT OF NUCLEATION AND CONDENSATION RATES DUE TO MIXING EVENTS IN THE TROPOPAUSE REGION
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KHOSRAWI, F., KONOPKA, P., and MÜLLER, R.
- Published
- 2001
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34. Modeling of condensation, nucleation and mixing processes during the stream 1998 campaign
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Khosrawi, F., Konopka, P., Beuermann, J., Schiller, C., McKenna, D.S., and Lelieveld, J.
- Published
- 2000
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35. Impact of Enhanced Recovery After Surgery Protocol Compliance on Outcome After Pancreatic Surgery: Results From a Certified ERAS Center.
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Ritter AS, Welsch T, Brodersen F, Auinger J, Moll-Khosrawi P, Goetz MR, Bardenhagen J, Nitschke C, Schneider T, Wellge B, Suling A, Uzunoglu FG, Heumann A, Nickel F, Hackert T, and Izbicki JR
- Abstract
Objective: The aim was to evaluate the sustainability of the pancreatic Enhanced Recovery After Surgery (ERAS) program and the effect of ERAS items on patient morbidity and hospital stay., Background: The current ERAS guideline recommendations encompass 27 items to improve recovery after pancreatoduodenectomy (PD)., Methods: Patients who underwent pancreatic resection at the University Hospital Hamburg-Eppendorf between February 2016 and June 2023 were included. The datasets were retrospectively collected from a central database. The effects of individual ERAS items and compliance on morbidity and hospital stay were assessed by uni- and multivariable analyses., Results: In total, 594 patients who underwent PD (44.8%), distal pancreatectomy (14.6%), total pancreatectomy (17.8%), or other pancreatic resections (22.7%) were included. Of these, 90 patients (15.2%) achieved a high overall ERAS compliance of ≥70%. High compliance was associated with significantly less complications (Clavien-Dindo ≥ 3a), reduced 30-day mortality, and a shorter hospital stay. Early mobilization on the first postoperative day (POD1), restrictive intravenous fluid administration, and timely removal of urinary catheters were significant multivariable predictors for lower morbidity. Early mobilization on POD1 also correlated with reduced morbidity in the subcohort of PD cases., Conclusions: The pancreatic ERAS protocol can be sustainably implemented and applied to both, PD and non-PD cases. A high level of compliance with the ERAS protocol after pancreatic resections correlated with improved outcomes but was achieved by less than one-fifth of patients. Early mobilization on POD1 and restrictive fluid management were key indicators for optimized short-term outcomes., Competing Interests: Disclosure: The authors declare that they have nothing to disclose., (Copyright © 2024 The Author(s). Published by Wolters Kluwer Health, Inc.)
- Published
- 2024
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36. [Postgraduate Training: eLogbook, Entrustable Professional Activities & Co.]
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Kröger L, Haus JM, Schulte-Uentrop L, Zöllner C, and Moll-Khosrawi P
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- Humans, Curriculum, Educational Measurement, Germany, Clinical Competence, Competency-Based Education, Education, Medical, Continuing
- Abstract
The transformation of time-bound and procedure-oriented specialist medical postgraduate training towards a competency-based approach (competency-based medical education, CBME) has been demanded for several years. Many frameworks, like the CANMEDs (Canadian Medical Education Directives for Specialists) describe competencies that should be acquired by each physician. In Germany, the medical council has recently obligated a competency-based postgraduate training. Although the idea of CBME emphasizes the learning process at the working place, CBME has also been criticized to be too theoretical and detached from the clinical working practice. To close this gap, the concept of Entrustable Professional Activities (EPA) has been introduced. An EPA describes concrete clinical tasks that are successively entrusted to the trainee. The decision to entrust a task is supported by the sum of workplace-based assessments.Sustainable implementation of competency-based training requires close collaboration among all involved individuals and institutions. Furthermore, continuous feedback and open dialogue are crucial for identifying challenges and areas for improvement. The success of CBME hinges on the collective effort of all stakeholders to create a framework to enhance specialty training and an overall advancement in the field. This cooperative approach is essential to successfully translate the theoretical foundations of competency-based teaching into clinical practice and ensure high-quality specialty training., Competing Interests: Parisa Moll-Khosrawi ist Entwicklerin und Initiatorin des im Artikel beschriebenen EPA-basierten Logbuchs., (Thieme. All rights reserved.)
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- 2024
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37. Continuous Finger-cuff versus Intermittent Oscillometric Arterial Pressure Monitoring and Hypotension during Induction of Anesthesia and Noncardiac Surgery: The DETECT Randomized Trial.
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Kouz K, Weidemann F, Naebian A, Lohr A, Bergholz A, Thomsen KK, Krause L, Petzoldt M, Moll-Khosrawi P, Sessler DI, Flick M, and Saugel B
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- Humans, Arterial Pressure, Blood Pressure Determination methods, Vascular Surgical Procedures, Blood Pressure, Hypotension diagnosis, Anesthesia
- Abstract
Background: Finger-cuff methods allow noninvasive continuous arterial pressure monitoring. This study aimed to determine whether continuous finger-cuff arterial pressure monitoring helps clinicians reduce hypotension within 15 min after starting induction of anesthesia and during noncardiac surgery. Specifically, this study tested the hypotheses that continuous finger-cuff-compared to intermittent oscillometric-arterial pressure monitoring helps clinicians reduce the area under a mean arterial pressure of 65 mmHg within 15 min after starting induction of anesthesia and the time-weighted average mean arterial pressure less than 65 mmHg during noncardiac surgery., Methods: In this single-center trial, 242 noncardiac surgery patients were randomized to unblinded continuous finger-cuff arterial pressure monitoring or to intermittent oscillometric arterial pressure monitoring (with blinded continuous finger-cuff arterial pressure monitoring). The first of two hierarchical primary endpoints was the area under a mean arterial pressure of 65 mmHg within 15 min after starting induction of anesthesia; the second primary endpoint was the time-weighted average mean arterial pressure less than 65 mmHg during surgery., Results: Within 15 min after starting induction of anesthesia, the median (interquartile range) area under a mean arterial pressure of 65 mmHg was 7 (0, 24) mmHg × min in 109 patients assigned to continuous finger-cuff monitoring versus 19 (0.3, 60) mmHg × min in 113 patients assigned to intermittent oscillometric monitoring (P = 0.004; estimated location shift: -6 [95% CI: -15 to -0.3] mmHg × min). During surgery, the median (interquartile range) time-weighted average mean arterial pressure less than 65 mmHg was 0.04 (0, 0.27) mmHg in 112 patients assigned to continuous finger-cuff monitoring and 0.40 (0.03, 1.74) mmHg in 115 patients assigned to intermittent oscillometric monitoring (P < 0.001; estimated location shift: -0.17 [95% CI: -0.41 to -0.05] mmHg)., Conclusions: Continuous finger-cuff arterial pressure monitoring helps clinicians reduce hypotension within 15 min after starting induction of anesthesia and during noncardiac surgery compared to intermittent oscillometric arterial pressure monitoring., (Copyright © 2023 American Society of Anesthesiologists. All Rights Reserved.)
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- 2023
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38. National consensus on entrustable professional activities for competency-based training in anaesthesiology.
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Ganzhorn A, Schulte-Uentrop L, Küllmei J, Zöllner C, and Moll-Khosrawi P
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- Humans, Consensus, Curriculum, Workplace, Acclimatization, Anesthesiology
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Entrustable Professional Activities (EPA) are specialty specific tasks or responsibilities, combining the clinical workplace and the long-demanded competency-based medical education. The first step to transform time-based into EPA-based training is to reach consensus on core EPAs that describe sufficiently the workplace. We aimed to present a nationally validated EPA-based curriculum for postgraduate training in anaesthesiology. Using a predefined and validated list of EPAs, we applied a Delphi consensus approach, involving all German chair directors of anaesthesiology. We then conducted a subsequent qualitative analysis. Thirty-four chair directors participated in the Delphi survey (77% response) and twenty-five completed all the questions (56% overall response). Reflected by the intra-class-correlation, the consensus on the importance (ICC: 0.781, 95% CI [0.671, 0.868]) and the year of entrustment (ICC: 0.973, 95% CI [0.959, 0.984]) of each EPA reached high levels of agreement among the chair directors. The comparison of data assessed in the preceding validation and present study showed excellent and good levels of agreement (ICC entrustment: 0.955, 95% CI [0.902, 0.978]; ICC importance: 0.671, 95% CI [-0.204, 0.888]). The adaptation process, based on the qualitative analysis, resulted in a final set of 34 EPAs. We present an elaborate, fully described and nationally validated EPA-based curriculum, reflecting a broad consensus among different stakeholders of anaesthesiology. We hereby provide a further step towards competency-based postgraduate anaesthesiology training., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2023 Ganzhorn et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
- Published
- 2023
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39. Can Different Admissions to Medical School Predict Performance of Non-Technical Skill Performance in Simulated Clinical Settings?
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Moll-Khosrawi P, Hampe W, Schulte-Uentrop L, Zöllner C, Zimmermann S, and Huelmann T
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Non-technical skills (NTS) in medical care are essential to ensure patient safety. Focussing on applicants' NTS during medical school admission could be a promising approach to ensure that future physicians master NTS at a high level. Next to pre-university educational attainment, many selection tests have been developed worldwide to facilitate and standardise the selection process of medical students. The predictive validity of these tests regarding NTS performance in clinical settings has not been investigated (yet). Therefore, we explored the predictive validities and prognosis of the Hamburg MMI (HAM-Int), HAM-Nat, PEA, and waiting as well as other quota (as example) designated by the Federal Armed Forces) for NTS performance in clinical emergency medicine training of medical students. During 2017 and 2020, N = 729 second, third, and fourth year students were enrolled within the study. The mean age of participants was 26.68 years (SD 3.96) and 49% were female students. NTS of these students were assessed during simulation scenarios of emergency training with a validated rating tool. Students admitted via waiting quota and designated by the Armed Forces performed significantly better than students admitted by excellent PEA ( p = 0.026). Non-EU students performed significantly inferior ( p = 0.003). Our findings provide further insight to explain how and if admission to medical school could predict NTS performance of further physicians.
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- 2022
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40. Continuous intra-arterial versus intermittent oscillometric arterial pressure monitoring and hypotension during induction of anaesthesia: the AWAKE randomised trial.
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Kouz K, Wegge M, Flick M, Bergholz A, Moll-Khosrawi P, Nitzschke R, Trepte CJC, Krause L, Sessler DI, Zöllner C, and Saugel B
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- Anesthesia, General adverse effects, Arterial Pressure, Humans, Wakefulness, Blood Pressure Determination, Hypotension diagnosis, Hypotension etiology, Hypotension prevention & control
- Abstract
Background: Hypotension during induction of anaesthesia is associated with organ injury. Continuous arterial pressure monitoring might help reduce hypotension. We tested the hypothesis that continuous intra-arterial compared with intermittent oscillometric arterial pressure monitoring reduces hypotension during induction of anaesthesia in noncardiac surgery patients., Methods: In this single-centre randomised trial, 242 noncardiac surgery patients in whom intra-arterial arterial pressure monitoring was planned were randomised to unblinded continuous intra-arterial or to intermittent oscillometric arterial pressure monitoring (with blinded intra-arterial arterial pressure monitoring) during induction of anaesthesia. The primary endpoint was the area under a mean arterial pressure (MAP) of 65 mm Hg within the first 15 min of induction of anaesthesia. Secondary endpoints included areas under MAP values of 60, 50, and 40 mm Hg and durations of MAP values <65, <60, <50, and <40 mm Hg., Results: There were 224 subjects available for analysis. The median (25th-75th percentile) area under a MAP of 65 mm Hg was 15 (2-36) mm Hg • min in subjects assigned to continuous intra-arterial monitoring and 46 (7-111) mm Hg • min in subjects assigned to intermittent oscillometric monitoring (P<0.001). Subjects assigned to continuous intra-arterial monitoring had smaller areas under MAP values of 60, 50, and 40 mm Hg and shorter durations of MAP values <65, <60, <50, and <40 mm Hg than subjects assigned to intermittent oscillometric monitoring., Conclusion: Continuous intra-arterial arterial pressure monitoring reduces hypotension during induction of anaesthesia compared with intermittent oscillometric arterial pressure monitoring in noncardiac surgery patients. In patients for whom an arterial catheter is planned, clinicians might therefore consider inserting the arterial catheter before rather than after induction of anaesthesia., Clinical Trials Registration: NCT04894019., (Copyright © 2022 British Journal of Anaesthesia. Published by Elsevier Ltd. All rights reserved.)
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- 2022
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41. The effects of simulation-based education on medical students' motivation.
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Moll-Khosrawi P, Zöllner C, Cronje JS, and Schulte-Uentrop L
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- Cross-Sectional Studies, Curriculum, Humans, Motivation, Education, Medical, Students, Medical
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Objectives: To assess the effects of simulation-based education on medical students' motivation and to compare these effects with the motivational effects of a classical teaching approach (seminar)., Methods: In this cross-sectional study, motivational qualities of 164 3rd year medical students, who participated in four mandatory simulation-based training and two seminars of the department of anaesthesiology, were assessed. Comparative analysis was made to determine differences and changes of motivation towards participating in each teaching unit and each teaching format, using a one-way analysis of variance and unpaired t-tests., Results: The different motivational qualities, as well as the computed levels of autonomous and controlled motivation of students towards participating in each of the six teaching units and each teaching format did not differ significantly (F
(5, 839) = 0.66, p = 0.657; F(5, 839) = 0.29, p = 0.920; (t(843) = - 0.72, p = 0.471; t(843) = -0.17, p = 0.868). Students` motivation, particularly autonomous motivation, did not enhance after participating in the first SBME, (t(264) = 1.035, p = 0.301), after participating in the second SBME, (t(254) = -0.055, p = 0.956), or after participating in the third training (t(250) = -0.881, p = 0.379)., Conclusions: Simulation-based medical education provides a valuable teaching approach but, in this study, this teaching approach did not enhance nor stimulate student motivation. Therefore, simulation-based medical education equals classical teaching approaches regarding student motivation. Further investigations are needed to identify how simulation-based medical education could enhance medical students' motivation.- Published
- 2021
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42. Understanding Why All Types of Motivation Are Necessary in Advanced Anaesthesiology Training Levels and How They Influence Job Satisfaction: Translation of the Self-Determination Theory to Healthcare.
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Moll-Khosrawi P, Zimmermann S, Zoellner C, and Schulte-Uentrop L
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Studies applying the self-determination theory have shown that intrinsic motivation and autonomous regulation lead to job satisfaction and to better job performance. What has not been worked out clearly yet are the effects of extrinsic motivation and controlled regulation on affect, job performance and job satisfaction. However, it has been described that controlled regulation is often necessary for mundane tasks. In anaesthesiology, routine daily tasks can be perceived as mundane by those who have achieved a certain level of training (e.g., consultants). Therefore, it was hypothesised that consultants have high expressions of all motivational qualities. Furthermore, it was hypothesised that job satisfaction of anaesthesiologists is correlated with autonomous motivation. The hypotheses were tested in a cross-sectional study design within a group of anaesthesiologists. The study participants reported the same pattern throughout the motivational continuum. Consultants reported the highest levels of all motivational qualities, including controlled regulation, as well as the highest levels of job satisfaction. Junior residents reported high levels of amotivation and extrinsic regulation. The lowest levels of identified regulation and job satisfaction were reported by the group of attendings. Job satisfaction was positively correlated with intrinsic motivation and negatively correlated with amotivation. Therefore, our findings from the field of anaesthesiology show that the expressions of high levels of controlled regulation might be necessary for specialists to engage in mundane daily tasks. Intrinsic motivation and autonomous regulation are necessary for job satisfaction and the presence of controlled regulation and extrinsic behavioural regulation have no declining effects. Furthermore, the decrease of amotivation will lead to enhanced job satisfaction and the resulting consequences will be extensive. Junior residents need to be supported with the aim to enhance their feeling of autonomy and competence in order to decrease amotivation and to foster autonomous regulation and hence to increase job satisfaction and well-being. Further special focus should be on attendings to counteract their lacking identification with the job. Hereby, the provision of feedback and professional perspectives might foster the process of re-identification.
- Published
- 2021
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43. Development and validation of a postgraduate anaesthesiology core curriculum based on Entrustable Professional Activities: a Delphi study.
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Moll-Khosrawi P, Ganzhorn A, Zöllner C, and Schulte-Uentrop L
- Subjects
- Adult, Clinical Competence, Competency-Based Education, Cross-Sectional Studies, Delphi Technique, Female, Humans, Male, Anesthesiology education, Curriculum standards
- Abstract
Background: Postgraduate training curricula should not be based on time-spans or predefined numbers of performed procedures. One approach to link competencies to clinical tasks is the concept of Entrustable Professional Activities (EPA). The goal of this study was the definition, ranking and validation of EPAs for anaesthesiology postgraduate training and the creation of an anaesthesiologic core curriculum. Methods: Anaesthesiologists of different levels of training participated in the study (single-center, cross-sectional) . First, an expert group defined a preliminary list of EPAs. Then a first Delphi round (n= 47 participants) was applied to identify daily anaesthesiology tasks with the goal to define EPAs. From the first Delphi round a new set of EPAs was defined, using the template and mapping method. Through an alignment process, conducted by the expert group, the preliminary EPAs and the new set of EPAs from the first Delphi round were summarised into a new list of EPAs. This list was presented to the study participants in a second Delphi round (n=80 participants), with the goal to validate and rank each EPA and to define the year of entrustment. For this purpose, participants were asked in the second Delphi round if each EPA should be included into an anaesthesiology core curriculum and in which year of training entrustment should take place. Furthermore, they were asked to rank each EPA on a numeric scale, defining its importance. From this numeric scale, the content validity index (CVI) for each EPA was calculated. Consensus of the results from the second Delphi round was calculated, using the one-way random effects model to calculate Intra-Class-Correlations (ICC). Percentages of agreement among the whole set of EPAs of this study and a previously published set of EPAs were computed. Results: A core-curriculum comprising of 39 EPAs was developed. The EPAs were subdivided into superior/high and inferior/low scoring EPAs, reflecting their importance and were mapped to the year of entrustment. The results reached high consensus among the different participating anaesthesiologist groups (overall agreement was 0.96 for the CVI of each EPA and 0.83 for the year in which the EPAs should be entrusted). Agreement with the previously defined set of EPAs was 73.3%. Conclusion: This study provides a further step in transforming postgraduate anaesthesiology training into a more contemporary approach. Other studies are necessary to complete and amend the presented core curriculum of EPA based postgraduate anaesthesiology training., Competing Interests: The authors declare that they have no competing interests., (Copyright © 2020 Moll-Khosrawi et al.)
- Published
- 2020
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44. VEGFR-1 overexpression identifies a small subgroup of aggressive prostate cancers in patients treated by prostatectomy.
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Tsourlakis MC, Khosrawi P, Weigand P, Kluth M, Hube-Magg C, Minner S, Koop C, Graefen M, Heinzer H, Wittmer C, Sauter G, Krech T, Wilczak W, Huland H, Simon R, Schlomm T, and Steurer S
- Subjects
- Aged, Biomarkers, Tumor genetics, Disease-Free Survival, Gene Expression, Humans, Male, Middle Aged, Neoplasm Grading, Neoplasm Recurrence, Local prevention & control, Prognosis, Prostatectomy, Prostatic Neoplasms pathology, Prostatic Neoplasms surgery, Vascular Endothelial Growth Factor Receptor-1 genetics, Biomarkers, Tumor metabolism, Neoplasm Recurrence, Local metabolism, Prostatic Neoplasms metabolism, Vascular Endothelial Growth Factor Receptor-1 metabolism
- Abstract
The VEGFR-1 is suggested to promote tumor progression. In the current study we analyzed prevalence and prognostic impact of the VEGFR-1 by immunohistochemistry on a tissue microarray containing more than 3000 prostate cancer specimens. Results were compared to tumor phenotype, ETS-related gene (ERG) status, and biochemical recurrence. Membranous VEGFR-1 expression was detectable in 32.6% of 2669 interpretable cancers and considered strong in 1.7%, moderate in 6.7% and weak in 24.2% of cases. Strong VEGFR-1 expression was associated with TMPRSS2:ERG fusion status as determined by fluorescence in situ hybridization (FISH) and immunohistochemistry (p < 0.0001 each). Elevated VEGFR-1 expression was linked to high Gleason grade and advanced pT stage in TMPRSS2:ERG negative cancers (p = 0.0008 and p = 0.001), while these associations were absent in TMPRSS2:ERG positive cancers. VEGFR-1 expression was also linked to phosphatase and tensin homolog (PTEN) deletions. A comparison with prostate specific antigen (PSA) recurrence revealed that the 1.7% of prostate cancers with the highest VEGFR-1 levels had a strikingly unfavorable prognosis. This could be seen in all cancers, in the subsets of TMPRSS2:ERG positive or negative, PTEN deleted or undeleted carcinomas (p < 0.0001 each). High level VEGFR-1 expression is infrequent in prostate cancer, but identifies a subgroup of aggressive cancers, which may be candidates for anti-VEGFR-1 targeted therapy.
- Published
- 2015
- Full Text
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