158 results on '"Blix E"'
Search Results
2. The Frequency of Intrapartum Cesarean Section Use With the WHO Partograph Versus Zhang’s Guidelines in the Labor Progression Study (LAPS): A Multicenter, Cluster-randomized Controlled Trial
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Bernitz, S., Dalbye, R., Zhang, J., Eggebø, T.M., Frøslie, K.F., Olsen, I.C., Blix, E., and Øian, P.
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- 2019
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3. 50 The labour progression study (LaPS): duration of labour following zhangs’s guideline and the who partograph – A cluster randomised trial
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Dalbye, R., primary, Blix, E., additional, Frey Frøslie, K., additional, Zhang, J., additional, Moe Eggebø, T., additional, Olsen, I., additional, Rozsa, D., additional, Øian, P., additional, and Bernitz, S., additional
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- 2022
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4. What is a ship? Ship categories and application of AIS data and accident statistics for the normalization of ship risk
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Blix, E, primary, Bye, R, additional, Kleiven, E, additional, Almklov, P, additional, Kongsvik, T, additional, Gåseidnes, H, additional, and Berntsen, V, additional
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- 2015
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5. Barriers—from safety studies to safety management
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Blix, E, primary, Nyheim, O, additional, van Roosmalen, T, additional, Holde, T, additional, Karlsen, A, additional, Ims, B, additional, Johansen, T, additional, and Idsøe-Jakobsen, J, additional
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- 2015
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6. What women emphasise as important aspects of care in childbirth – an online survey
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Vedeler, C, primary, Nilsen, ABV, additional, Blix, E, additional, Downe, S, additional, and Eri, TS, additional
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- 2021
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7. Risk factors for obstetric anal sphincter injury after a successful multicentre interventional programme
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Stedenfeldt, M, ian, P, Gissler, M, Blix, E, and Pirhonen, J
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- 2014
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8. The Nordic Network of Academic Midwives – NorNAM
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Blix, E, Eri, TS, and Ólafsdóttir, OA
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ddc: 610 ,nordic context ,midwifery models ,midwifery theories ,610 Medical sciences ,Medicine ,midwifery - Abstract
Background: NorNAM is a network of researching midwives from five Nordic countries focusing on midwifery models and theories. Midwives and midwifery have been a respected and integrated part of the health care systems in the Nordic countries for the last 300 years [ref:1]. Midwives are the[for full text, please go to the a.m. URL], 5th International Conference of the German Association of Midwifery Science (DGHWi)
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- 2020
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9. What women emphasise as important aspects of care in childbirth – an online survey.
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Vedeler, C, Nilsen, ABV, Blix, E, Downe, S, and Eri, TS
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INTRAPARTUM care ,BIRTHPLACES ,MARITAL status ,INTERNET surveys ,CHILDBIRTH at home ,MATERNAL health services - Abstract
Objective: To explore and describe what women who have given birth in Norway emphasise as important aspects of care during childbirth. Design: The study is based on data from the Babies Born Better online survey, version 2. Setting: The maternity care system in Norway. Study population: Women who gave birth in Norway between 2013 and 2018. Method: Descriptive statistics were used to describe sample characteristics and to compare data from the B3 survey with national data from the Medical Birth Registry of Norway. The open‐ended questions were analysed with an inductive thematic analysis. Main outcome measures: Themes developed from two open‐ended questions. Results: The final sample included 8401 women. There were no obvious differences between the sample population and the national population with respect to maternal age, marital status, parity, mode of birth and place of birth, except for the proportion of planned home births. Four themes and one overarching theme were identified; Compassionate and Respectful Care, A Family Focus, Sense of Continuity and Consistency, and Sense of Security. Overarching theme: Coherence in Childbearing. Conclusions: Norwegian women across all birth settings emphasise maternity care that authentically focuses on both socio‐cultural and psychological aspects of care, and physical and clinical factors. If the positive aspects of care identified in this study are adopted at all levels of the maternity care system and from all care providers, there is a high chance that most women will have a safe outcome, and a strong sense of coherence related to a positive birth and motherhood experience. Having a baby is a pivotal life changing experience and not just a clinical event, according to a survey of 8400 women in Norway. Positive birth and motherhood experiences depend on maternity staff who are both skilled and kind. Having a baby is a pivotal life‐changing experience and not just a clinical event, according to a survey of 8400 women in Norway. Positive birth and motherhood experiences depend on maternity staff who are both skilled and kind. [ABSTRACT FROM AUTHOR]
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- 2022
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10. Episiotomy characteristics and risk for obstetric anal sphincter injuries: a case–control study
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Stedenfeldt, M, Pirhonen, J, Blix, E, Wilsgaard, T, Vonen, B, and ian, P
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- 2012
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11. Is the operative delivery rate in low-risk women dependent on the level of birth care? A randomised controlled trial
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Bernitz, S, Rolland, R, Blix, E, Jacobsen, M, Sjøborg, K, and Øian, P
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- 2011
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12. Intermittent auscultation fetal monitoring during labour: A systematic scoping review to identify methods, effects, and accuracy
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Blix, E, primary, Maude, Robyn, primary, Hals, E, primary, Kisa, S, primary, Karlsen, E, primary, Nohr, EA, primary, De Jonge, A, primary, Lindgren, H, primary, Downe, S, primary, Reinar, LM, primary, Foureur, M, primary, Pay, AS Devold, primary, and Kaasen, A, primary
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- 2020
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13. Birth outcomes in primiparous women who were raped as adults: a matched controlled study
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Nerum, H, Halvorsen, L, Øian, P, Sørlie, T, Straume, B, and Blix, E
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- 2010
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14. ic2 Prognostic value of the labour admission test and its effectiveness compared with auscultation only: a systematic review
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Blix, E, Reinar, L M, Klovning, A, and Ølan, P
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- 2006
15. Intermittent auscultation fetal monitoring during labour: A systematic scoping review to identify methods, effects, and accuracy
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Blix, E, Maude, R, Hals, E, Kisa, S, Karlsen, E, Nohr, EA, De Jonge, A, Lindgren, H, Downe, S, Reinar, LM, Foureur, M, Devold Pay, AS, Kaasen, A, Blix, E, Maude, R, Hals, E, Kisa, S, Karlsen, E, Nohr, EA, De Jonge, A, Lindgren, H, Downe, S, Reinar, LM, Foureur, M, Devold Pay, AS, and Kaasen, A
- Abstract
© 2019 Blix 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. Background Intermittent auscultation (IA) is the technique of listening to and counting the fetal heart rate (FHR) for short periods during active labour and continuous cardiotocography (CTC) implies FHR monitoring for longer periods. Although the evidence suggests that IA is the best way to monitor healthy women at low risk of complications, there is no scientific evidence for the ideal device, timing, frequency and duration for IA. We aimed to give an overview of the field, identify and describe methods and practices for performing IA, map the evidence and accuracy for different methods of IA, and identify research gaps. Methods We conducted a systematic scoping review following the Joanna Briggs methodology. Med-line, EMBASE, Cinahl, Maternity & Infant Care, Cochrane Library, SveMed+, Web of Science, Scopus, Lilacs and African Journals Online were searched for publications up to January 2019. We did hand searches in relevant articles and databases. Studies from all countries, international guidelines and national guidelines from Denmark, United Kingdom, United States, New Zealand, Australia, The Netherlands, Sweden, Denmark, and Norway were included. We did quality assessment of the guidelines according to the AGREEMENT tool. We performed a meta-analysis assessing the effects of IA with a Doppler device vs. Pinard device using methods described in The Cochrane Handbook, and we performed an overall assessment of the summary of evidence using the GRADE approach. Results The searches generated 6408 hits of which 26 studies and 11 guidelines were included in the review. The studies described slightly different techniques for performing IA, and some did not provide detailed descriptions. Few of the studies provided de
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- 2019
16. Automated segmentation for breast cancer radiation therapy based on the ESTRO delineation guideline
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Eldesoky, A. R., Yates, E. S., Nyeng, T. B., Thomsen, M. S., Nielsen, H. M., Poortmans, P., Kirkove, C., Krause, M., Kamby, C., Mjaaland, I., Blix, E. S., Jensen, Ingelise, Berg, M., Lorenzen, E. L., Taheri-Kadkhoda, Z., and Offersen, B. V.
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- 2017
17. Quality assessment of target volume delineation and dose planning in the Skagen Trial 1
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Francolini, G., Thomsen, M., Yates, E., Kirkove, C., Jensen, I., Blix, E., Kamby, C., Nielsen, M., Krause, M., Berg, M., Mjaaland, I., Schreiber, A., Kasti, U., Boye, K., and Offersen, B.
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- 2017
18. Quality assessment of delineation and dose planning of early breast cancer patients included in the randomized Skagen Trial 1
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Francolini, G., Thomsen, M. S., Yates, E. S., Kirkove, C., Jensen, I., Blix, E. S., Kamby, C., Nielsen, M. H., Krause, M., Berg, M., Mjaaland, I., Schreiber, A., Kasti, U. M., Boye, K., Offersen, B. V., Francolini, G., Thomsen, M. S., Yates, E. S., Kirkove, C., Jensen, I., Blix, E. S., Kamby, C., Nielsen, M. H., Krause, M., Berg, M., Mjaaland, I., Schreiber, A., Kasti, U. M., Boye, K., and Offersen, B. V.
- Abstract
BACKGROUND AND PURPOSE: To report on a Quality assessment (QA) of Skagen Trial 1, exploring hypofractionation for breast cancer patients with indication for regional nodal radiotherapy. MATERIAL AND METHODS: Deviations from protocol regarding target volume delineations and dose parameters (Dmin, Dmax, D98%, D95% and D2%) from randomly selected dose plans were assessed. Target volume delineation according to ESTRO guidelines was obtained through atlas based automated segmentation and centrally approved as gold standard (GS). Dice similarity scores (DSC) with original delineations were measured. Dose parameters measured in the two delineations were reported to assess their dosimetric outcome. RESULTS: Assessment included 88 plans from 12 centres in 4 countries. DSC showed high agreement in contouring, 99% and 96% of the patients had a complete delineation of target volumes and organs at risk. No deviations in the dosimetric outcome were found in 76% of the patients, 82% and 95% of the patients had successful coverage of breast/chestwall and CTVn_L2-4-interpectoral. Dosimetric outcomes of original delineation and GS were comparable. CONCLUSIONS: QA showed high protocol compliance and adequate dose coverage in most patients. Inter-observer variability in contouring was low. Dose parameters were in harmony with protocol regardless original or GS segmentation.
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- 2017
19. A quantitative indicator-based model to support risk-based supervision in the Norwegian maritime authority
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Aalberg, A, primary, Blix, E, additional, Edwin, N, additional, Bye, R, additional, and Berntsen, V, additional
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- 2017
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20. PO-0891: Quality assessment of target volume delineation and dose planning in the Skagen Trial 1
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Francolini, G., primary, Thomsen, M., additional, Yates, E., additional, Kirkove, C., additional, Jensen, I., additional, Blix, E., additional, Kamby, C., additional, Nielsen, M., additional, Krause, M., additional, Berg, M., additional, Mjaaland, I., additional, Schreiber, A., additional, Kasti, U., additional, Boye, K., additional, and Offersen, B., additional
- Published
- 2017
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21. Internal and external validation of an ESTRO delineation guideline - dependent automated segmentation tool for loco-regional radiation therapy of early breast cancer.
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Eldesoky, A. R., Yates, E. S., Nyeng, T. B., Thomsen, M. S., Nielsen, H. M., Poortmans, P., Kirkove, C., Krause, M., Kamby, C., Mjaaland, I., Blix, E. S., Jensen, I., Berg, M., Lorenzen, E. L., Taheri-Kadkhoda, Z., Offersen, B. V., Eldesoky, A. R., Yates, E. S., Nyeng, T. B., Thomsen, M. S., Nielsen, H. M., Poortmans, P., Kirkove, C., Krause, M., Kamby, C., Mjaaland, I., Blix, E. S., Jensen, I., Berg, M., Lorenzen, E. L., Taheri-Kadkhoda, Z., and Offersen, B. V.
- Abstract
BACKGROUND AND PURPOSE: To internally and externally validate an atlas based automated segmentation (ABAS) in loco-regional radiation therapy of breast cancer. MATERIALS AND METHODS: Structures of 60 patients delineated according to the ESTRO consensus guideline were included in four categorized multi-atlas libraries using MIM Maestro™ software. These libraries were used for auto-segmentation in two different patient groups (50 patients from the local institution and 40 patients from other institutions). Dice Similarity Coefficient, Average Hausdorff Distance, difference in volume and time were computed to compare ABAS before and after correction against a gold standard manual segmentation (MS). RESULTS: ABAS reduced the time of MS before and after correction by 93% and 32%, respectively. ABAS showed high agreement for lung, heart, breast and humeral head, moderate agreement for chest wall and axillary nodal levels and poor agreement for interpectoral, internal mammary nodal regions and LADCA. Correcting ABAS significantly improved all the results. External validation of ABAS showed comparable results. CONCLUSIONS: ABAS is a clinically useful tool for segmenting structures in breast cancer loco-regional radiation therapy in a multi-institutional setting. However, manual correction of some structures is important before clinical use. The ABAS is now available for routine clinical use in Danish patients.
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- 2016
22. EP-1465: The benefit of IMPT in treatment of left-sided breast cancer patients in deep inspiration breath hold
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Rasi, M., primary, Odland, O.H., additional, Bolstad Hysing, L., additional, Engeseth, G.M., additional, Petersen, J., additional, Blix, E., additional, Offersen, B., additional, and Muren, M.P., additional
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- 2015
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23. Creating a Safe Haven-Women's Experiences of the Midwife's Professional Skills During Planned Home Birth in Four Nordic Countries
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Sjöblom, I., Idvall, E., Lindgren, H., Blix, E., Kjaergaard, H., Olofsdottir, O., Hildingsson, Ingegerd, Thies-Lagergren, L., Radestad, I., Lundgren, I., Sjöblom, I., Idvall, E., Lindgren, H., Blix, E., Kjaergaard, H., Olofsdottir, O., Hildingsson, Ingegerd, Thies-Lagergren, L., Radestad, I., and Lundgren, I.
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Objective: The midwife assisting a birth has a considerable influence on the woman's experience of the birth. The aim of this study was to investigate the experience of the midwife's professional skills among women in Norway, Denmark, Iceland, and Sweden who chose a planned home birth. Design and Setting: All known home birth midwives were asked to inform the mothers about the project and invite them to complete a questionnaire about different aspects of their home birth experience. Method: The women were asked to assess 10 different aspects of the midwives' professional skills on a 4-graded scale below the main question: What was your experience of the midwife who assisted the labor? Furthermore, the mothers' experiences with the attending midwives were identified in the free text birth stories. The chosen method was a mixed method design. Findings: The home birth midwives' professional skills were generally high scored. No statistically significant differences were found with respect to the assessment of the midwife. The content analyses yielded one overarching theme: The competence and presence of the midwife creates a safe haven, and three categories, midwife's safe hand, midwife's caring approach, and midwife's peaceful presence. Conclusion: Women choosing a home birth in the four Nordic countries experienced that their midwives were highly skilled and they found the presence of the midwives valuable in helping them to feel safe and confident during birth. Despite differences in organization and guidelines for home births, the women's experience of the midwife's professional skills did not differ between the four countries. © 2014, Wiley Periodicals, Inc., Language of Original Document: English
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- 2014
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24. Authors' reply: Risk factors for obstetric anal sphincter injury after a successful multicentre interventional programme
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Stedenfeldt, M, primary, Øian, P, additional, Gissler, M, additional, Blix, E, additional, and Pirhonen, J, additional
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- 2014
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25. Risk factors for obstetric anal sphincter injury after a successful multicentre interventional programme
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Stedenfeldt, M, primary, Øian, P, additional, Gissler, M, additional, Blix, E, additional, and Pirhonen, J, additional
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- 2013
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26. Innkomst-CTG : hvilken betydning testen kan ha for jordmodre i deres daglige arbeid
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Blix, E., Öhlund, Lennart S., Blix, E., and Öhlund, Lennart S.
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- 2006
27. Is the Operative Delivery Rate in Low-risk Women Dependent on the Level of Birth Care? A Randomized Controlled Trial
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Bernitz, S., primary, Rolland, R., additional, Blix, E., additional, Jacobsen, M., additional, Sjøborg, K., additional, and Øian, P., additional
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- 2012
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28. Birth outcomes in primiparous women who were raped as adults: a matched controlled study
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Nerum, H, primary, Halvorsen, L, additional, Øian, P, additional, Sørlie, T, additional, Straume, B, additional, and Blix, E, additional
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- 2009
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29. SURVEY OF NORWEGIAN PRACTICE REGARDING RECOMMENDATIONS IN USE OF VAGINAL DILATORS
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Jessen, K., primary, Heimdal, K., additional, Blix, E., additional, and Bø, B., additional
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- 2009
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30. Norwegian midwives' perception of the labour admission test.
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Blix E and Öhlund LS
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OBJECTIVE: to explore what information and knowledge the labour admission test is perceived to provide and what meaning the test carries in the daily work of practising midwives. DESIGN: in-depth interviews transcribed verbatim and analysed using the grounded theory technique. SETTING: four different labour wards in Norway. PARTICIPANTS: a theoretical sample of 12 practising midwives. FINDINGS: the core category 'experiencing contradictions' was identified during the analyses, indicating that the midwives found conflicting interests within themselves, or between themselves and others when using the labour admission test. They experienced contradictions between professional identity and the increasing use of technology, between feeling safe and feeling unsafe and between having power and being powerless. KEY CONCLUSIONS: the labour admission traces could be difficult to interpret, especially for newly qualified midwives. Some midwives thought that a labour admission trace could protect them in case of litigation. The hierarchy of power in the labour ward influences the use and interpretation of the labour admission test. Some midwives felt their professional identity threatened and that midwives in general are losing their traditional skills because of the increasing use of obstetric technology. IMPLICATIONS FOR PRACTICE: the findings of the present study should be taken into consideration when changing practice to not routinely perform the labour admission test. There is also a need for further research on what effect the increasing use of obstetric technology has on traditional midwifery skills. [ABSTRACT FROM AUTHOR]
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- 2007
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31. Labor admission test: an assessment of the test's value as screening for fetal distress in labor.
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Blix, Ellen, Øian, Pål, Blix, E, and Øian, P
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LABOR (Obstetrics) ,FETAL distress ,COMPARATIVE studies ,FETAL heart rate monitoring ,RESEARCH methodology ,MEDICAL cooperation ,RESEARCH ,EVALUATION research ,PREDICTIVE tests ,RETROSPECTIVE studies - Abstract
Background: To determine if the labor admission test (LAT) can predict fetal distress in a population of laboring women, and in subgroups of low- or high-risk women, who delivered within six hours or between six and 24 hours after LAT.Methods: The data charts of all women who delivered at Hammerfest Hospital in 1996, 1997 and 1998 were retrospectively read. If the woman was admitted to the hospital because of onset of labor, was in the first stage of labor and delivered within 24 hours after admission, she was included. In the study period, 1639 gave birth and 932 were included in the study. A descriptive analysis of the population and assessment of LAT's sensitivity, positive predictive value, specificity and negative predictive value at different cut-off values was done.Results: In the study population 5.8% had fetal distress, and 5.3% had an operative delivery because of fetal distress. LAT's sensitivity in the whole population was 0.15 and positive predictive value was 0.16. Specificity was 0.95 and positive predictive value was 0.95. In the subgroups of low- and high-risk women, who delivered within six hours or between six and 24 hours after LAT, sensitivity varied between 0 and 0.36, and positive predictive value varied between 0 and 0.27. Specificity varied between 0.92 and 0.96, and negative predictive value varied between 0.89 and 0.97.Conclusions: According to these results, LAT cannot be recommended as a screening test for fetal distress in labor in low-risk women. Sensitivity is too low, and there are too many false-positive tests. It is unclear if LAT has benefits among high-risk women. [ABSTRACT FROM AUTHOR]- Published
- 2001
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32. Column control in the magnetic deflection of a short arc
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Blix, E D, primary and Guile, A E, additional
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- 1965
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33. Phospho-specific flow cytometry identifies aberrant signaling in indolent B-cell lymphoma
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Blix Egil S, Irish Jonathan M, Husebekk Anne, Delabie Jan, Forfang Lise, Tierens Anne M, Myklebust June H, and Kolstad Arne
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B-cell lymphoma ,B-cell receptor ,CD40 ,Phospho-flow cytometry ,Cell signaling ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
Abstract Background Knowledge about signaling pathways in malignant cells may provide prognostic and diagnostic information in addition to identify potential molecular targets for therapy. B-cell receptor (BCR) and co-receptor CD40 signaling is essential for normal B cells, and there is increasing evidence that signaling via BCR and CD40 plays an important role in the pathogenesis of B-cell lymphoma. The aim of this study was to investigate basal and induced signaling in lymphoma B cells and infiltrating T cells in single-cell suspensions of biopsies from small cell lymphocytic lymphoma/chronic lymphocytic leukemia (SLL/CLL) and marginal zone lymphoma (MZL) patients. Methods Samples from untreated SLL/CLL and MZL patients were examined for basal and activation induced signaling by phospho-specific flow cytometry. A panel of 9 stimulation conditions targeting B and T cells, including crosslinking of the B cell receptor (BCR), CD40 ligand and interleukins in combination with 12 matching phospho-protein readouts was used to study signaling. Results Malignant B cells from SLL/CLL patients had higher basal levels of phosphorylated (p)-SFKs, p-PLCγ, p-ERK, p-p38, p-p65 (NF-κB), p-STAT5 and p-STAT6, compared to healthy donor B cells. In contrast, anti-BCR induced signaling was highly impaired in SLL/CLL and MZL B cells as determined by low p-SFK, p-SYK and p-PLCγ levels. Impaired anti-BCR-induced p-PLCγ was associated with reduced surface expression of IgM and CD79b. Similarly, CD40L-induced p-ERK and p-p38 were also significantly reduced in lymphoma B cells, whereas p-p65 (NF-κB) was equal to that of normal B cells. In contrast, IL-2, IL-7 and IL-15 induced p-STAT5 in tumor-infiltrating T cells were not different from normal T cells. Conclusions BCR signaling and CD40L-induced p-p38 was suppressed in malignant B cells from SLL/CLL and MZL patients. Single-cell phospho-specific flow cytometry for detection of basal as well as activation-induced phosphorylation of signaling proteins in distinct cell populations can be used to identify aberrant signaling pathways.
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- 2012
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34. Surgical fasciectomy of the trapezius muscle combined with neurolysis of the Spinal accessory nerve; results and long-term follow-up in 30 consecutive cases of refractory chronic whiplash syndrome
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Freeman Michael, Champagne Lloyd P, Nystrom N Ake, and Blix Elisabet
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Orthopedic surgery ,RD701-811 ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Background Chronic problems from whiplash trauma generally include headache, pain and neck stiffness that may prove refractory to conservative treatment modalities. As has previously been reported, such afflicted patients may experience significant temporary relief with injections of local anesthetic to painful trigger points in muscles of the shoulder and neck, or lasting symptomatic improvement through surgical excision of myofascial trigger points. In a subset of patients who present with chronic whiplash syndrome, the clinical findings suggest an affliction of the spinal accessory nerve (CN XI, SAN) by entrapment under the fascia of the trapezius muscle. The present study was undertaken to assess the effectiveness of SAN neurolysis in chronic whiplash syndrome. Methods A standardized questionnaire and a linear visual-analogue scale graded 0-10 was used to assess disability related to five symptoms (pain, headache, insomnia, weakness, and stiffness) before, and one year after surgery in a series of thirty consecutive patients. Results The preoperative duration of symptoms ranged from seven months to 13 years. The following changes in disability scores were documented one year after surgery: Overall pain decreased from 9.5 +/- 0.9 to 3.2 +/- 2.6 (p < 0.001); headaches from 8.2 +/- 2.9 to 2.3 +/- 2.8 (p < 0.001); insomnia from 7.5 +/- 2.4 to 3.8 +/- 2.8 (p < 0.001); weakness from 7.6 +/- 2.6 to 3.6 +/- 2.8 (p < 0.001); and stiffness from 7.0 +/- 3.2 to 2.6 +/- 2.7 (p < 0.001). Conclusions Entrapment of the spinal accessory nerve and/or chronic compartment syndrome of the trapezius muscle may cause chronic debilitating pain after whiplash trauma, without radiological or electrodiagnostic evidence of injury. In such cases, surgical treatment may provide lasting relief.
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- 2010
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35. Cost minimisation analyses of birth care in low-risk women in Norway: a comparison between planned home birth and birth in a standard obstetric unit.
- Author
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Joranger P, Huitfeldt AS, Bernitz S, and Blix E
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- Humans, Female, Norway, Pregnancy, Adult, Delivery, Obstetric economics, Home Childbirth economics, Home Childbirth statistics & numerical data
- Abstract
Background: Evidence exists that planned home births for low-risk women in settings in which they have access to hospital transfer if needed are safe. The costs of planned home births, compared to low-risk births in obstetric units, are not clear. The aim of this study was to compare costs associated with hospital births versus home births under different home birth organizations., Methods: We performed a cost minimisation analysis (CMA) based on decision-analytic modelling while assuming that health outcomes were not affected by place of birth. Estimations of resource use were mainly based on three existing Norwegian datasets: (1) women with planned home births (n = 354), (2) women with planned home births (n = 482) of which 63 were transferred to a hospital, and (3) women with planned births in a hospital (n = 1550)., Results: Planned home birth costs 45.9% (credibility interval [CrI] 39.1-54.2) of a low-risk birth at a hospital. For planned home birth, the birth was the costliest activity (32.1%). The costs for planned home birth were estimated to be €1872 (CrI 1694-2071) and included hospitalisations for some. Costs for only those with actual home birth was €1353 (CrI 1244-1469). Costs of a birth, including possible birth-related complications, in low-risk women in a hospital was €4077 (CrI 3575-4615). When including the costs of being on call for one woman at a time, a planned home birth costs €5,531 (CrI 5,171-5,906), which is 135.7% (CrI 117.7-156.8) of low-risk births at a hospital. When organizing midwives in the on call teams for multiple women at a time, a planned home birth costs € 2,842 (CrI 2,647-3,053), which is 69.7% (CrI 60.3-80.9) of a low-risk birth in a hospital., Conclusions: Home birth can be cost-effective if the midwives who facilitate home births are organised into larger groups, or they work for hospitals that also facilitate home births. A model in which midwives work separately or in pairs to assist with a home birth and are on call for one birth at a time may not be cost-effective., (© 2024. The Author(s).)
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- 2024
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36. Needs led research: ensuring relevant research in two PhD projects within maternity care.
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Aanstad KJ, Marsdal KE, Blix E, Kaasen A, Lukasse M, Sørbye IK, and Svege I
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Background: There has been a growing concern regarding research waste and the mismatch between conducted research and the research needs of knowledge users. The Needs Led Research (NLR) approach is proposed as an effective method to ensure that research address actual evidence gaps that are relevant to the users of the knowledge. By search and reviewing literature and involving knowledge users, NLR aims to identify, verify, and prioritize research needs. This paper describes and compares the implementation of the NLR approach in two separate PhD projects within maternity care, and addresses the challenges encountered throughout the processes, aiming to offer valuable insights for future NLR initiatives., Methods: The NLR processes consisted of four phases: (1) defining the scope (2) identifying and verifying research needs (3) prioritizing research needs and (4) designing the PhD projects. Literature searches were conducted during Phase 2, while knowledge user involvement took place in Phases 2 and 3. The knowledge user involvement, at a co-thinker and advocatory level, included knowledge user groups and surveys. Project groups, who were responsible for all decision-making, conducted Phases 1 and 4. The scopes of the PhD projects were labor induction (NLR-LINO) and fetal monitoring in low-risk deliveries (NLR-LISTEN)., Results: In NLR-LINO, 17 research needs were identified and verified as actual evidence gaps relevant for the knowledge users. Among these, ten were rated as "very important" by a majority of the 322 survey respondents. The aim of the PhD LINO project was defined as "To investigate whether outpatient induction of labor is beneficial in a Norwegian setting." In NLR-LISTEN, seven research needs were identified and verified as actual evidence gaps relevant for the knowledge users. These were prioritized by 466 survey respondents, and the aim of the PhD LISTEN project was defined as "To investigate the methods used for fetal monitoring in low-risk deliveries in Norway and evaluate adherence to evidence-based practice while also exploring potential reasons for any deviations.", Conclusions: This paper shows that the NLR is a viable approach for prioritizing research. The findings highlight the impact of the initial scope on subsequent phases and emphasize the importance of pragmatic decision-making throughout the process. However, it is crucial to acknowledge that NLR requires dedicated resources, and if integrated into PhD projects, additional time and training should be allocated accordingly., (© 2024. The Author(s).)
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- 2024
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37. Overuse of intrapartum CTG monitoring in low-risk women in Norway.
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Aanstad KJ, Pripp AH, Dalbye R, Pay AD, Staff AC, Kaasen A, and Blix E
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- 2024
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38. A low cesarean section rate is not a reason for overusing CTG.
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Aanstad KJ, Pripp AH, Dalbye R, Pay AD, Staff AC, Kaasen A, and Blix E
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- Humans, Female, Pregnancy, Heart Rate, Fetal, Cesarean Section statistics & numerical data, Cesarean Section adverse effects, Cardiotocography
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- 2024
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39. Methodological quality in reliability/agreement studies.
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Vanbelle S and Blix E
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- Humans, Reproducibility of Results, Research Design
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- 2024
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40. Intrapartum fetal monitoring practices in Norway: A population-based study.
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Aanstad KJ, Pripp AH, Dalbye R, Pay AD, Staff AC, Kaasen A, and Blix E
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- Humans, Female, Norway, Pregnancy, Adult, Registries, Gestational Age, Delivery, Obstetric methods, Delivery, Obstetric statistics & numerical data, Auscultation methods, Risk Factors, Heart Rate, Fetal, Young Adult, Cardiotocography methods, Cardiotocography standards, Fetal Monitoring methods, Guideline Adherence statistics & numerical data
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Objective: To describe intrapartum fetal monitoring methods used in all births in Norway in 2019-2020, assess adherence to national guidelines, investigate variation by women's risk status, and explore associations influencing monitoring practices., Methods: A nationwide population-based study. We collected data about all pregnancies with a gestational age ≥ 22 weeks during 2019-2020 from the Medical Birth Registry of Norway. We used descriptive analyses, stratified for risk status, to examine fetal monitoring methods used in all deliveries. Univariable and multivariable logistic regression models were used to determine factors associated with monitoring with cardiotocography (CTG) in low-risk, straightforward births., Results: In total, 14 285 (14%) deliveries were monitored with only intermittent auscultation (IA), 46214 (46%) with only CTG, and 33417 (34%) with IA and CTG combined. Four percent (2 067/50 533) of women with risk factors were monitored with IA only. Half (10589/21 282) of the low-risk women with straightforward births were monitored with CTG. Maternal and fetal characteristics, size of the birth unit and regional practices influenced use of CTG monitoring in this group., Conclusions: Most births are monitored with CTG only, or combined with IA. Half the women with low-risk pregnancies and straightforward births were monitored with CTG although national guidelines recommending IA., Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2024 The Authors. Published by Elsevier B.V. All rights reserved.)
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- 2024
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41. How well can the fetal heart rate baseline be assessed by intrapartum intermittent auscultation? An interrater reliability and agreement study.
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Engelhart CH, Vanbelle S, Øian P, Pay ASD, Kaasen A, and Blix E
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Background: We aimed to examine the inter-reliability and agreement among midwives when assessing the fetal heart rate (FHR) using the handheld Doppler. The primary aim was to measure the reliability and agreement of FHR baseline (baseline) as beats per minute (bpm). The secondary aims were to measure fluctuations from the baseline, defined as increases and decreases, and classifications (normal or abnormal) of FHR soundtracks. This is the first interrater reliability and agreement study on intermittent auscultation (IA) to our knowledge., Methods: The participant population consisted of 154 women in labor, from a mixed-risk population and admitted to hospital for intrapartum care. The rater population were 16 midwives from various maternity care settings in Norway. A total of 154 soundtracks were recorded with a handheld Doppler device, and the 16 raters assessed 1-min soundtracks once, through an online survey (Nettskjema). They assessed the baseline, FHR increase or decrease, and the FHR classification. The primary outcome, baseline, was measured with intraclass correlation coefficient (ICC). The secondary outcomes were measured with kappa and proportion of agreement., Results: The interrater reliability for the baseline (bpm) was ICC(A,1) 0.74 (95% CI 0.69-0.78). On average, an absolute difference of 7.9 bpm (95% CI 7.3-8.5 bpm) was observed between pairs of raters., Conclusion: Our results demonstrate an acceptable level of reliability and agreement in assessing the baseline using a handheld Doppler., (© 2024 The Author(s). Birth published by Wiley Periodicals LLC.)
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- 2024
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42. The association between waterbirth and perineal injury or other adverse outcomes among low-risk women with physiological birth: Results from the Nordic Home Birth Cohort Study.
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Halfdansdottir B, Ellinger-Kaya K, Fjøsne K, Lindgren H, Hegaard HK, and Blix E
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- Humans, Female, Pregnancy, Adult, Prospective Studies, Episiotomy statistics & numerical data, Incidence, Parity, Water, Apgar Score, Scandinavian and Nordic Countries epidemiology, Postpartum Hemorrhage epidemiology, Norway epidemiology, Delivery, Obstetric statistics & numerical data, Iceland epidemiology, Immersion, Lacerations epidemiology, Infant, Newborn, Pregnancy Outcome epidemiology, Cohort Studies, Risk Factors, Sweden epidemiology, Perineum injuries, Home Childbirth statistics & numerical data, Obstetric Labor Complications epidemiology, Natural Childbirth statistics & numerical data
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Problem/background: Immersion in water has known benefits, such as reducing pain and shortening the duration of labour. The relationship between waterbirth and perineal injury remains unclear., Aim: To compare the incidence of perineal injury in waterbirth and birth on land among low-risk women. Secondary outcomes were postpartum haemorrhage and 5-minute Apgar scores <7., Methods: Prospective cohort study of 2875 low-risk women who planned a home birth in Denmark, Iceland, Norway, and Sweden in 2008-2013 and had a spontaneous vaginal birth without intervention. Descriptive statistics and logistic regression were performed., Findings: A total of 942 women had a waterbirth, and 1933 gave birth on land. The groups differed in their various background variables. Multiparous women had moderately lower rates of intact perineum (59.3% vs. 63.9%) and primiparous women had lower rates of episiotomies (1.1% vs. 4.8%) in waterbirth than in birth on land. No statistically significant differences were detected in adjusted regression analysis on intact perineum in waterbirth (primiparous women's aOR = 1.03, CI 0.68-1.58; multiparous women's aOR = 0.84, CI 0.67-1.05). The rates of sphincter injuries (0.9% vs. 0.6%) were low in both groups. No significant differences were detected in secondary outcomes., Discussion: The decreased incidence of intact perineum among multiparous women was modest and inconclusive, and the prevalence of sphincter injury was low., Conclusion: Low-risk women contemplating waterbirth should be advised to weigh the risks and benefits detected in this study against previously established benefits of waterbirth and should make an informed choice based on their values., Competing Interests: Declaration of Competing Interest The authors declare no conflict of interest., (Copyright © 2024 The Authors. Published by Elsevier Ltd.. All rights reserved.)
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- 2024
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43. Impact of Prosigna test on adjuvant treatment decision in lymph node-negative early breast cancer-a prospective national multicentre study (EMIT-1).
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Ohnstad HO, Blix ES, Akslen LA, Gilje B, Raj SX, Skjerven H, Borgen E, Janssen EAM, Mortensen E, Brekke MB, Falk RS, Schlichting E, Boge B, Songe-Møller S, Olsson P, Heie A, Mannsåker B, Vestlid MA, Kursetgjerde T, Gravdehaug B, Suhrke P, Sanchez E, Bublevic J, Røe OD, Geitvik GA, Halset EH, Rypdal MC, Langerød A, Lømo J, Garred Ø, Porojnicu A, Engebraaten O, Geisler J, Lyngra M, Hansen MH, Søiland H, Nakken T, Asphaug L, Kristensen V, Sørlie T, Nygård JF, Kiserud CE, Reinertsen KV, Russnes HG, and Naume B
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- Humans, Female, Middle Aged, Prospective Studies, Chemotherapy, Adjuvant methods, Aged, Adult, Lymph Nodes pathology, Aged, 80 and over, Breast Neoplasms pathology, Breast Neoplasms drug therapy, Breast Neoplasms therapy
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Background: EMIT-1 is a national, observational, single-arm trial designed to assess the value of the Prosigna, Prediction Analysis of Microarray using the 50 gene classifier (PAM50)/Risk of Recurrence (ROR), test as a routine diagnostic tool, examining its impact on adjuvant treatment decisions, clinical outcomes, side-effects and cost-effectiveness. Here we present the impact on treatment decisions., Patients and Methods: Patients with hormone receptor-positive, human epidermal growth factor receptor 2-negative pT1-pT2 lymph node-negative early breast cancer (EBC) were included. The Prosigna test and standard histopathology assessments were carried out. Clinicians' treatment decisions were recorded before (pre-Prosigna) and after (post-Prosigna) the Prosigna test results were disclosed., Results: Of 2217 patients included, 2178 had conclusive Prosigna results. The pre-Prosigna treatment decisions were: no systemic treatment (NT) in 27% of patients, endocrine treatment alone (ET) in 38% and chemotherapy (CT) followed by ET (CT + ET) in 35%. Post-Prosigna treatment decisions were 25% NT, 51% ET and 24% CT + ET, respectively. Adjuvant treatment changed in 28% of patients, including 21% change in CT use. Among patients assigned to CT + ET pre-Prosigna, 45% were de-escalated to ET post-Prosigna. Of patients assigned to ET, 12% were escalated to CT + ET and 8% were de-escalated to NT; of those assigned to NT, 18% were escalated to ET/CT + ET. CT was more frequently recommended for patients aged ≤50 years. In the subgroup with pT1c-pT2 G2 and intermediate Ki67 (0.5-1.5× local laboratory median Ki67 score), the pre-Prosigna CT treatment decision varied widely across hospitals (3%-51%). Post-Prosigna, the variability of CT use was markedly reduced (8%-24%). The correlation between Ki67 and ROR score within this subgroup was poor (r = 0.25-0.39). The median ROR score increased by increasing histological grade, but the ROR score ranges were wide (for G1 0-79, G2 0-90, G3 16-94)., Conclusion: The Prosigna test result changed adjuvant treatment decisions in all EBC clinical risk groups, markedly decreased the CT use for patients categorized as higher clinical risk pre-Prosigna and reduced treatment decision discrepancies between hospitals., (Copyright © 2024 The Author(s). Published by Elsevier Ltd.. All rights reserved.)
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- 2024
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44. IMPRESS-Norway: improving public cancer care by implementing precision medicine in Norway; inclusion rates and preliminary results.
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Puco K, Fagereng GL, Brabrand S, Niehusmann P, Støre Blix E, Samdal Steinskog ES, Haug Å, Fredvik Torkildsen C, Oppedal IA, Meltzer S, Flobak Å, Johansson KAM, Bjørge L, Hjortland GO, Dalhaug A, Lund JÅ, Gilje B, Grønlie Cameron M, Hovland R, Falk RS, Smeland S, Giercksky Russnes HE, Taskén K, and Helland Å
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- Humans, Norway, Prospective Studies, Male, Female, Middle Aged, Aged, High-Throughput Nucleotide Sequencing, Molecular Targeted Therapy methods, Adult, Patient Selection, Precision Medicine methods, Neoplasms genetics, Neoplasms therapy, Neoplasms drug therapy
- Abstract
Background and Purpose: In Norway, comprehensive molecular tumour profiling is implemented as part of the public healthcare system. A substantial number of tumours harbour potentially targetable molecular alterations. Therapy outcomes may improve if targeted treatments are matched with actionable genomic alterations. In the IMPRESS-Norway trial (NCT04817956), patients are treated with drugs outside the labelled indication based on their tumours molecular profile., Patients and Methods: IMPRESS-Norway is a national, prospective, non-randomised, precision cancer medicine trial, offering treatment to patients with advanced-stage disease, progressing on standard treatment. Comprehensive next-generation sequencing, TruSight Oncology 500, is used for screening. Patients with tumours harbouring molecular alterations with matched targeted therapies available in IMPRESS-Norway, are offered treatment. Currently, 24 drugs are available in the study. Primary study endpoints are percentage of patients offered treatment in the trial, and disease control rate (DCR) defined as complete or partial response or stable disease in evaluable patients at 16 weeks (W16) of treatment. Secondary endpoint presented is DCR in all treated patients., Results: Between April 2021 and October 2023, 1,167 patients were screened, and an actionable mutation with matching drug was identified for 358 patients. By the data cut off 186 patients have initiated treatment, 170 had a minimum follow-up time of 16 weeks, and 145 also had evaluable disease. In patients with evaluable disease, the DCR was 40% (58/145). Secondary endpoint analysis of DCR in all treated patients, showed DCR of 34% (58/170)., Interpretation: Precision cancer medicine demonstrates encouraging clinical effect in a subset of patients included in the IMPRESS-Norway trial.
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- 2024
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45. Labor curves based on cervical dilatation over time and their accuracy and effectiveness: A systematic scoping review.
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Huurnink JME, Blix E, Hals E, Kaasen A, Bernitz S, Lavender T, Ahlberg M, Øian P, Høifødt AI, Miltenburg AS, and Pay ASD
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- Humans, Pregnancy, Female, Labor, Obstetric physiology, Labor Stage, First physiology
- Abstract
Objectives: This systematic scoping review was conducted to 1) identify and describe labor curves that illustrate cervical dilatation over time; 2) map any evidence for, as well as outcomes used to evaluate the accuracy and effectiveness of the curves; and 3) identify areas in research that require further investigation., Methods: A three-step systematic literature search was conducted for publications up to May 2023. We searched the Medline, Maternity & Infant Care, Embase, Cochrane Library, Epistemonikos, CINAHL, Scopus, and African Index Medicus databases for studies describing labor curves, assessing their effectiveness in improving birth outcomes, or assessing their accuracy as screening or diagnostic tools. Original research articles and systematic reviews were included. We excluded studies investigating adverse birth outcomes retrospectively, and those investigating the effect of analgesia-related interventions on labor progression. Study eligibility was assessed, and data were extracted from included studies using a piloted charting form. The findings are presented according to descriptive summaries created for the included studies., Results and Implications for Research: Of 26,073 potentially eligible studies, 108 studies were included. Seventy-three studies described labor curves, of which ten of the thirteen largest were based mainly on the United States Consortium on Safe Labor cohort. Labor curve endpoints were 10 cm cervical dilatation in 69 studies and vaginal birth in 4 studies. Labor curve accuracy was assessed in 26 studies, of which all 15 published after 1986 were from low- and middle-income countries. Recent studies of labor curve accuracy in high-income countries are lacking. The effectiveness of labor curves was assessed in 13 studies, which failed to prove the superiority of any curve. Patient-reported health and well-being is an underrepresented outcome in evaluations of labor curves. The usefulness of labor curves is still a matter of debate, as studies have failed to prove their accuracy or effectiveness., Competing Interests: The authors have declared that no competing interests exist., (Copyright: © 2024 Huurnink 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.)
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- 2024
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46. ST waveform analysis vs cardiotocography alone for intrapartum fetal monitoring: An updated systematic review and meta-analysis of randomized trials.
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Blix E, Brurberg KG, Reierth E, Reinar LM, and Øian P
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- Humans, Female, Pregnancy, Heart Rate, Fetal, Fetal Monitoring methods, Electrocardiography, Cardiotocography methods, Randomized Controlled Trials as Topic, Fetal Distress diagnosis
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Introduction: ST waveform analysis (STAN) was introduced as an adjunct to cardiotocography (CTG) to improve neonatal and maternal outcomes. The aim of the present study was to quantify the efficacy of STAN vs CTG and assess the quality of the evidence using GRADE., Material and Methods: We performed systematic literature searches to identify randomized controlled trials and assessed included studies for risk of bias. We performed meta-analyses, calculating pooled risk ratio (RR) or Peto odds ratio (OR). We also performed post hoc trial sequential analyses for selected outcomes to assess the risk of false-positive results and the need for additional studies., Results: Nine randomized controlled trials including 28 729 women were included in the meta-analysis. There were no differences between the groups in operative deliveries for fetal distress (10.9 vs 11.1%; RR 0.96; 95% confidence interval [CI] 0.82-1.11). STAN was associated with a significantly lower rate of metabolic acidosis (0.45% vs 0.68%; Peto OR 0.66; 95% CI 0.48-0.90). Accordingly, 441 women need to be monitored with STAN instead of CTG alone to prevent one case of metabolic acidosis. Women allocated to STAN had a reduced risk of fetal blood sampling compared with women allocated to conventional CTG monitoring (12.5% vs 19.6%; RR 0.62; 95% CI 0.49-0.80). The quality of the evidence was high to moderate., Conclusions: Absolute effects of STAN were minor and the clinical significance of the observed reduction in metabolic acidosis is questioned. There is insufficient evidence to state that STAN as an adjunct to CTG leads to important clinical benefits compared with CTG alone., (© 2023 The Authors. Acta Obstetricia et Gynecologica Scandinavica published by John Wiley & Sons Ltd on behalf of Nordic Federation of Societies of Obstetrics and Gynecology (NFOG).)
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- 2024
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47. Expectations related to home-based telemonitoring of high-risk pregnancies: A qualitative study addressing healthcare providers' and users' views in Norway.
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Aasbø G, Staff AC, Blix E, Pay ASD, Waldum Å, Rivedal S, and Solbraekke KN
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- Female, Pregnancy, Humans, Prenatal Care, Qualitative Research, Health Personnel, Pregnancy, High-Risk, Motivation, Amino Alcohols
- Abstract
Introduction: A pregnancy can be evaluated as high-risk for the woman and/or the fetus based on medical history and on previous or ongoing pregnancy characteristics. Monitoring high-risk pregnancies is crucial for early detection of alarming features, enabling timely intervention to ensure optimal maternal and fetal health outcomes. Home-based telemonitoring (HBTM) is a marginally exploited opportunity in antenatal care. The aim of this study was to illuminate healthcare providers' and users' expectations and views about HBTM of maternal and fetal health in high-risk pregnancies before implementation., Material and Methods: To address diverse perspectives regarding HBTM of high-risk pregnancies, four different groups of experienced healthcare providers or users were interviewed (n = 21). Focus group interviews were conducted separately with midwives, obstetricians, and women who had previously experienced stillbirth. Six individual interviews were conducted with hospitalized women with ongoing high-risk pregnancies, representing potential candidates for HBTM. None of the participants had any previous experience with HBTM of pregnancies. The study is embedded in a social constructivist research paradigm. Interviews were analyzed using a thematic approach., Results: The participants acknowledged the benefits and potentials of more active roles for both care recipients and providers in HBTM. Concerns were clearly addressed and articulated in the following themes: eligibility and ability of women, availability of midwives and obstetricians, empowerment and patient safety, and shared responsibility. All groups problematized issues crucial to maintaining a sense of safety for care recipients, and healthcare providers also addressed issues related to maintaining a sense of safety also for the care providers. Conditions for HBTM were understood in terms of optimal personalized training, individual assessment of eligibility, and empowerment of an active patient role. These conditions were linked to the importance of competent and experienced midwives and obstetricians operating the monitoring, as well as the availability and continuity of care provision. Maintenance of safety in HBTM in high-risk pregnancies was crucial, particularly so in situations involving emerging acute health issues., Conclusions: HBTM requires new, proactive roles among midwives, obstetricians, and monitored women, introducing a fine-tuned balance between personalized and standardized care to provide safe, optimal monitoring of high-risk pregnancies., (© 2023 The Authors. Acta Obstetricia et Gynecologica Scandinavica published by John Wiley & Sons Ltd on behalf of Nordic Federation of Societies of Obstetrics and Gynecology (NFOG).)
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- 2024
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48. Umbilical cord blood acid-base analysis at birth and long-term neurodevelopmental outcomes in children: a systematic review and meta-analysis.
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Myrhaug HT, Kaasen A, Pay ASD, Henriksen L, Smedslund G, Saugstad OD, and Blix E
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- Infant, Newborn, Child, Humans, Case-Control Studies, Fetal Blood
- Abstract
Background: Umbilical cord blood acid-base sampling is routinely performed at many hospitals. Recent studies have questioned this practice and the association of acidosis with cerebral palsy., Objective: To investigate the associations between the results of umbilical cord blood acid-base analysis at birth and long-term neurodevelopmental outcomes and mortality in children., Search Strategy: We searched six databases using the search strategy: umbilical cord AND outcomes., Selection Criteria: Randomised controlled trials, cohorts and case-control studies from high-income countries that investigated the association between umbilical cord blood analysis and neurodevelopmental outcomes and mortality from 1 year after birth in children born at term., Data Collection and Analysis: We critically assessed the included studies, extracted data and conducted meta-analyses comparing adverse outcomes between children with and without acidosis, and the mean proportions of adverse outcomes. The certainty of evidence was assessed using the Grading of Recommendations, Assessment, Development and Evaluations approach., Main Results: We have very low confidence in the following findings: acidosis was associated with higher cognitive development scores compared with non-acidosis (mean difference 5.18, 95% CI 0.84-9.52; n = two studies). Children with acidosis also showed a tendency towards higher risk of death (relative risk [RR] 5.72, 95% CI 0.90-36.27; n = four studies) and CP (RR 3.40, 95% CI 0.86-13.39; n = four studies), although this was not statistically significant. The proportion of children with CP was 2.39/1000 across the studies, assessed as high certainty evidence., Conclusion: Due to low certainty of evidence, the associations between umbilical cord blood gas analysis at delivery and long-term neurodevelopmental outcomes in children remains unclear., (© 2023 John Wiley & Sons Ltd.)
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- 2023
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49. Association of oxytocin augmentation and duration of labour with postpartum haemorrhage: A cohort study of nulliparous women.
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Bernitz S, Betran AP, Gunnes N, Zhang J, Blix E, Øian P, Eggebø TM, and Dalbye R
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- Pregnancy, Female, Humans, Oxytocin adverse effects, Cohort Studies, Postpartum Hemorrhage etiology, Oxytocics adverse effects, Labor, Obstetric
- Abstract
Objective: Both duration of labour and use of oxytocin for augmentation are known risk factors for postpartum haemorrhage but distinguishing between the significance of these factors is complex. In this study, we aimed to investigate the association between both labour duration and oxytocin augmentation, for postpartum haemorrhage., Design: A cohort study based on a secondary analysis of a cluster-randomised trial., Participants and Setting: Term nulliparous women with a single foetus in cephalic presentation, spontaneous onset of active labour and a vaginal birth. The participants were originally included in cluster-randomised trial conducted in Norway from December 1, 2014, to January 31, 2017, that aimed to compare the frequency of intrapartum caesarean sections when adhering to the WHO partograph versus Zhang's guideline., Measurements: The data were analysed through four statistical models. Model 1 investigated the effect of oxytocin augmentation as a dichotomous variable (yes/no); Model 2 investigated the effect of the duration of oxytocin augmentation; Model 3 investigated the effect of the maximum dose of oxytocin; and Model 4 investigated the effect of both the duration of augmentation and the maximum dose of oxytocin. All four models included duration of labour divided into five time-intervals. We used binary logistic regression to estimate the odds ratios of postpartum haemorrhage, defined as blood loss of ≥ 1000 ml, including a random intercept for hospital and mutually adjusting for oxytocin augmentation and labour duration in addition to maternal age, maternal marital status, maternal higher education level, maternal smoking habits in the first trimester, maternal body mass index and birth weight., Findings: Model 1 found a significant association between the use of oxytocin and postpartum haemorrhage. In Model 2, oxytocin augmentation of ≥ 4.5 h was associated with postpartum haemorrhage. In Model 3, we found an association between a maximum dose of oxytocin of ≥ 20 mU/min and postpartum haemorrhage. Model 4 showed that a maximum dose of oxytocin ≥ 20 mU/min was associated with postpartum haemorrhage both for those augmented < 4.5 h and for those augmented ≥ 4.5 h. Duration of labour was associated with postpartum haemorrhage in all models if lasting ≥ 16 h., Key Conclusions: We found both oxytocin augmentation and labour duration to be associated with postpartum haemorrhage. Oxytocin doses of ≥ 20 mU/min and a labour duration of ≥ 16 h showed an independent association., Implication for Practice: The potent drug oxytocin should be carefully administered, as doses of ≥ 20 mU/min were associated with an increased risk of PPH, regardless of the duration of oxytocin augmentation., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (Copyright © 2023. Published by Elsevier Ltd.)
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- 2023
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50. Reliability and agreement in intrapartum fetal heart rate monitoring interpretation: A systematic review.
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Hernandez Engelhart C, Gundro Brurberg K, Aanstad KJ, Pay ASD, Kaasen A, Blix E, and Vanbelle S
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- Pregnancy, Female, Humans, Reproducibility of Results, Heart Rate, Fetal physiology, Parturition, Fetal Monitoring, Cardiotocography methods, Heart Rate Determination
- Abstract
Introduction: Fetal heart rate (FHR) monitoring is routine in intrapartum care worldwide and one of the most common obstetrical procedures. Intrapartum FHR monitoring helps assess fetal wellbeing and interpretation of the FHR help form decisions for clinical management and intervention. It relies on the observers' subjective assessments, with variation in interpretations leading to variations in intrapartum care. The purpose of this systematic review was to summarize and evaluate extant inter- and intrarater reliability research on the human interpretation of intrapartum FHR monitoring., Material and Methods: We searched for the terms "fetal heart rate monitoring," "interpretation agreement" and related concepts on Embase, Medline, Maternity and Infant Care Database and CINAHL. The last search was made on January 31, 2022. The protocol for the study was prospectively registered in PROSPERO (CRD42021260937). Studies that assess inter- and intrarater reliability and agreement of health professionals' intrapartum FHR monitoring were included and studies including other assessment of fetal wellbeing excluded. We extracted data in reviewer pairs using quality appraisal tool for studies of diagnostic reliability (QAREL) forms. The data retrieved from the studies are presented as narrative synthesis and in additional tables., Results: Forty-nine articles concerning continuous FHR monitoring were included in the study. For interrater reliability and agreement, in total 577 raters assessed 6315 CTG tracings. There was considerable heterogeneity in quality and measures across the included articles. We found higher reliability and agreement for the basic FHR features than for overall classification and higher agreement for intrarater reliability and agreement than for their interrater counterparts., Conclusions: There is great variation in reliability and agreement measures for continuous intrapartum FHR monitoring, implying that intrapartum CTG should be used with caution for clinical decision making given its questionable reliability. We found few high-quality studies and noted methodological concerns in the studies. We recommend a more standardized approach to future reliability studies on FHR monitoring., (© 2023 The Authors. Acta Obstetricia et Gynecologica Scandinavica published by John Wiley & Sons Ltd on behalf of Nordic Federation of Societies of Obstetrics and Gynecology (NFOG).)
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- 2023
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