47 results on '"Boers K"'
Search Results
2. The impact of caesarean scar niche on fertility - a systematic review.
- Author
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van den Tweel, M. M, van der Struijs, S., Le Cessie, S., and Boers, K. E
- Abstract
Background: The trend of increasing caesarean section (CS) rates brings up questions related to subfertility. Research regarding the influence of CS on assisted reproduction techniques (ART) is conflicting. A potential mechanism behind CS-induced subfertility is intra uterine fluid resulting from a caesarean scar defect or niche. The vaginal microbiome has been repeatedly connected to negative ART outcomes, but it is unknown if the microbiome is changed in relation to a niche. Methods: This systematic review describes literature investigating the effect of a niche on live birth rates after assisted reproduction. Furthermore, studies investigating a difference in microbial composition in subfertile persons with a niche compared to no niche are evaluated. Pubmed, Embase and Web of Science were searched on March 2023 for comparative studies on both study questions. Inclusion criteria were i.e., English language, human-only studies, availability of the full article and presence of comparative pregnancy data on a niche. The quality of the included studies and their risk of bias were assessed using the Newcastle-Ottawa scale for cohort studies. The results were graphically displayed in a forest plot. Results: Six retrospective cohort studies could be included on fertility outcomes, with a total of 1083 persons with a niche and 3987 without a niche. The overall direction of effect shows a negative impact of a niche on the live birth rate (pooled aOR 0.58, 95% CI 0.48-0.69) with low-grade evidence. Three studies comparing the microbiome between persons with and without a CS could be identified. Conclusion: There is low-grade evidence to conclude that the presence of a niche reduces live birth rates when compared to persons without a niche. The theory that a caesarean has a negative impact on pregnancy outcomes because of dysbiosis promoted by the niche is interesting, but there is no sufficient literature about this. PLAIN LANGUAGE SUMMARY: The increasing number of caesarean deliveries has raised concerns about how it might affect a woman's ability to get pregnant afterwards. Some studies suggest that having a caesarean section (CS) could make it harder to conceive, particularly through in vitro fertilisation (IVF). The reason could be the scar or niche from a previous caesarean. This niche can cause fluid inside the uterus. We also know that the mix of bacteria in the vagina, called the vaginal microbiome, can affect a woman's chances of getting pregnant, especially with treatments like IVF. But we are not sure if having a caesarean affects the vaginal microbiome. To understand this better, van den Tweel's team looked at studies on whether having a niche from a caesarean affects a woman's chance of having a baby through IVF. They also looked at studies comparing the bacteria in the vagina of women who have had a caesarean with those who have not. They found that having a caesarean niche makes it harder for a woman to have a baby through IVF. However, the evidence from these studies is not very strong. We still do not know enough about whether having a caesarean niche affects the bacteria in the vagina. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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3. The Short-Term Impact of Formal Controls on Subsequent Offending and Future Formal Controls in a German and UK City
- Author
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Boers, K., Kaiser, F., Schaerff, M., and Wikström, P.
- Published
- 2023
4. Analysis of National and International Guidelines on Placental–Fetal Growth Restriction
- Author
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Malin, Gemma, primary, McCowan, Lesley, additional, Boers, K. E., additional, and Thornton, Jim G., additional
- Published
- 2018
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5. Pharmacokinetics of nebulized and subcutaneously implanted terbinafine in cottonmouths (Agkistrodon piscivorus)
- Author
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Kane, L. P., Allender, M. C., Archer, G., Leister, K., Rzadkowska, M., Boers, K., Souza, M., and Cox, S.
- Published
- 2017
- Full Text
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6. Induction versus expectant monitoring for intrauterine growth restriction at term: randomised equivalence trial (DIGITAT)
- Author
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Boers, K E, Vijgen, S M C, Bijlenga, D, van der Post, J A M, Bekedam, D J, Kwee, A, van der Salm, P C M, van Pampus, M G, Spaanderman, M E A, de Boer, K, Duvekot, J J, Bremer, H A, Hasaart, T H M, Delemarre, F M C, Bloemenkamp, K W M, van Meir, C A, Willekes, C, Wijnen, E J, Rijken, M, le Cessie, S, Roumen, F J M E, Thornton, J, van Lith, J M M, Mol, B W J, and Scherjon, S A
- Published
- 2011
7. Transfusion policy after severe postpartum haemorrhage: a randomised non-inferiority trial
- Author
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Prick, B W, Jansen, A JG, Steegers, E AP, Hop, W CJ, Essink-Bot, M L, Uyl-de Groot, C A, Akerboom, B MC, van Alphen, M, Bloemenkamp, K WM, Boers, K E, Bremer, H A, Kwee, A, van Loon, A J, Metz, G CH, Papatsonis, D NM, van der Post, J AM, Porath, M M, Rijnders, R JP, Roumen, F JME, Scheepers, H CJ, Schippers, D H, Schuitemaker, N WE, Stigter, R H, Woiski, M D, Mol, B WJ, van Rhenen, D J, and Duvekot, J J
- Published
- 2014
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8. HEALTH RELATED QUALITY OF LIFE IN PATIENTS WITH ACUTE ANEMIA AFTER PRIMARY POSTPARTUM HEMORRHAGE: A RANDOMIZED CONTROLLED TRIAL OF RED BLOOD CELL TRANSFUSION VS EXPECTANT MANAGEMENT:THE WOMB STUDY: 4C-S27–03
- Author
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Prick, B W, Jansen, A JG, Steegers, E AP, Hop, W CJ, Essink-Bot, M L, de Uyl-Groot, C A, Akerboom, B MC, van Alphen, M., Bloemenkamp, K WM, Boers, K E, Bremer, H A, Kwee, A, van Loon, A J, Metz, G CH, Papatsonis, D NM, van der Post, J AM, Porath, M, Rijnders, R JP, Roumen, F JME, Scheepers, H CJ, Schippers, D H, Schuitemaker, N WE, Spaanderman, M EA, Stigter, R H, Mol, B WJ, van Rhenen, D J, and Duvekot, J
- Published
- 2012
9. Induction versus expectant monitoring for intrauterine growth restriction at term: randomised equivalence trial (DIGITAT)
- Author
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Boers, K E, Vijgen, S M C, Bijlenga, D, van der Post, J A M, Bekedam, D J, Kwee, A, van der Salm, P C M, van Pampus, M G, Spaanderman, M E A, de Boer, K, Duvekot, J J, Bremer, H A, Hasaart, T H M, Delemarre, F M C, Bloemenkamp, K W M, van Meir, C A, Willekes, C, Wijnen, E J, Rijken, M, le Cessie, S, Roumen, F J M E, Thornton, J G, van Lith, J M M, Mol, B W J, and Scherjon, S A
- Published
- 2010
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10. De stad verworpen en verworven
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Rose, H.G.E., Boers, K., de Bruin - van de Beek, M.E., Flierman, R., Welton, M.L., ICON - Medieval Studies, LS Laat en middeleeuws latijn, Afd Keltisch en klassieken, and LS Keltische talen en culturen
- Published
- 2019
11. Hot subdwarf stars in binary systems
- Author
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Theissen, A., primary, Moehler, S., additional, Bauer, T., additional, Heber, U., additional, de Boers, K. S., additional, and Schmidt, J. H. K., additional
- Published
- 1995
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12. Delivery or expectant management for prevention of adverse maternal and neonatal outcomes in hypertensive disorders of pregnancy: an individual participant data meta‐analysis
- Author
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Bernardes, T. P., primary, Zwertbroek, E. F., additional, Broekhuijsen, K., additional, Koopmans, C., additional, Boers, K., additional, Owens, M., additional, Thornton, J., additional, van Pampus, M. G., additional, Scherjon, S. A., additional, Wallace, K., additional, Langenveld, J., additional, van den Berg, P. P., additional, Franssen, M. T. M., additional, Mol, B. W. J., additional, and Groen, H., additional
- Published
- 2019
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13. Hot subdwarf stars in binary systems
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Theissen, A., Moehler, S., Bauer, T., Heber, U., de Boers, K. S., Schmidt, J. H. K., Araki, H., editor, Brézin, E., editor, Ehlers, J., editor, Frisch, U., editor, Hepp, K., editor, Jaffe, R. L., editor, Kippenhahn, R., editor, Weidenmüller, H. A., editor, Wess, J., editor, Zittartz, J., editor, Beiglböck, W., editor, Koester, Detlev, editor, and Werner, Klaus, editor
- Published
- 1995
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14. De stad verworpen en verworven
- Author
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ICON - Medieval Studies, LS Laat en middeleeuws latijn, Afd Keltisch en klassieken, LS Keltische talen en culturen, Rose, H.G.E., Boers, K., de Bruin - van de Beek, M.E., Flierman, R., Welton, M.L., ICON - Medieval Studies, LS Laat en middeleeuws latijn, Afd Keltisch en klassieken, LS Keltische talen en culturen, Rose, H.G.E., Boers, K., de Bruin - van de Beek, M.E., Flierman, R., and Welton, M.L.
- Published
- 2019
15. Repeated oral glucose tolerance tests in women at risk for gestational diabetes mellitus
- Author
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UMC Utrecht, MS Verloskunde, Child Health, de Wit, L., Bos, D. M., van Rossum, A. P., van Rijn, B. B., Boers, K. E., UMC Utrecht, MS Verloskunde, Child Health, de Wit, L., Bos, D. M., van Rossum, A. P., van Rijn, B. B., and Boers, K. E.
- Published
- 2019
16. Re: Small‐for‐gestational‐age babies after 37 weeks: impact study of risk‐stratification protocol. M. Veglia, A. Cavallaro, A. Papageorghiou, R. Black and L. Impey. Ultrasound Obstet Gynecol 2018; 52: 66–71.
- Author
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Boers, K. E., primary
- Published
- 2018
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17. Caesarean Section Rates and Adverse Neonatal Outcomes After Induction of Labour Versus Expectant Management in Women With an Unripe Cervix: A Secondary Analysis of the HYPITAT and DIGITAT Trials EDITORIAL COMMENT
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Bernardes, T. P., Broekhuijsen, K., Koopmans, C. M., Boers, K. E., Wyk, L., Tajik, P., Pampus, M. G., Scherjon, S. A., Mol, B. W., Franssen, M. T., Den Berg, P. P., Henk Groen, Amsterdam Public Health, Amsterdam Reproduction & Development (AR&D), Epidemiology and Data Science, and Obstetrics and Gynaecology
- Abstract
Between 20% and 25% of pregnancies require induction of labor (IOL), especially in situations that indicate better outcomes for mother and child if the pregnancy is not further prolonged. However, the effectiveness of IOL is subject to considerable debate because of concerns regarding the associated high rates of cesarean deliveries in women with an unripe cervix. The objective of this study was to evaluate the risk of cesarean delivery (CD) and adverse neonatal outcome rates after IOL or expectant management in women with an unripe cervix at or near term. This study used combined data from the multicenter, open-label, randomized controlled trials (RCTs) HYPITAT and DIGITAT. The inclusion criteria were women with hypertensive disease (HYPITAT trial) or suspected fetal growth restriction (DIGITAT trial) and a Bishop score of 6 or less. The study compared the outcomes after IOL and expectant management. The primary outcomes of this study were CD and a composite adverse neonatal outcome (defined as 5-minute Apgar score
- Published
- 2016
18. Between a House of Prayer and a Den of Robbers: Violence in Church Space and the Politics of Christian Victimhood in the Fourth Century CE
- Author
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Boers, K., Rutgers, Prof. Dr. L.V. (Thesis Advisor), Boers, K., and Rutgers, Prof. Dr. L.V. (Thesis Advisor)
- Abstract
Modern media bombard us on a near daily basis with stories and images of sacred and highly symbolical spaces that have been violently desecrated. These are usually accompanied by pleas for help directed at fellow believers around the world or at policy makers at home and abroad. Inevitably, modern audiences have become all too familiar with these stories and the standard repertoire of prejudice, inter-communal strife, and physical horrors they contain. Closer scrutiny of such narratives and images in Late Antiquity reveals that, regardless of whether these were fashioned by orthodox or heterodox Christian communities, such stories tend to exhibit very similar characteristics and employ some of the very same rhetorical strategies to frame the ways in which they convey their sense of victimhood to the outside world. There are nuances and differences, of course, but what emerges overall is a common idiom that readily cuts across Christianity’s religious boundaries, and similar ways in which victimhood and outrage at the violent desecration of symbolic space and imagery is expressed, or, in fact, produced. In this thesis I want to uncover and explain the nature and dynamics of this remarkable phenomenon. As such, my thesis is centred on the hypothesis that this common desecration idiom has its roots in the first half of the fourth century C.E., that it specifically arose out of the new religious constellation characteristic for this period, and that the parameters that were set then and there help explain why the typical reporting on the desecration of Christian religious space assumes the standardized format it does throughout Late Antiquity. In practical terms, my thesis seeks to unravel these developments by studying and comparing the narratology and symbolism of a carefully selected set of late antique stories that describe the violent desecration and destruction of religious space
- Published
- 2016
19. De IUCN rode lijst van de zoogdieren in Vlaanderen
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Maes, D., Baert, K., Boers, K., Casaer, J., Criel, D., Crêvecoeur, L., Dekeukeleire, D., Gouwy, J., Gyselings, R., Haelters, J., Herman, D., Herremans, M., Huysentruyt, F., Lefebvre, J., Lefevre, A., Onkelinx, T., Stuyck, J., Thomaes, A., Van Den Berge, K., Vandendriessche, B., Verbeylen, G., and Vercayie, D.
- Subjects
zoogdieren (Mammalia) ,B320-zo�geografie ,Rode lijsten ,Vlaanderen ,statistiek en modellering ,B280-dierenecologie ,biodiversiteitsbeleid - Published
- 2014
20. On the contrasting concepts of victimhood in Christian and Islamic cultures
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van Dijk, J.J.M., Sarkeshikian, H., Boers, K., Feltes, T., Kinzig, J., Sherman, L.W., Streng, F., Trüg, G., and INTERVICT
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ComputingMilieux_LEGALASPECTSOFCOMPUTING - Published
- 2013
21. Neonatal morbidity after induction vs expectant monitoring in at term growth restriction (DIGITAT trial)
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Willekes, C., Post, J. van der, Mol, B., Roumen, F., Boers, K., Delemarre, F., Boer, K. de, Bloemenkamp, K., Scherjon, S., Wyk, L. van, Rijken, M., Cessie, S. le, Lith, J. van, Bekedam, D., Pampus, M. van, Bremer, H., Kwee, A., and Wijnen, E.
- Published
- 2011
22. Transfusion policy after severe postpartum haemorrhage: a randomised non-inferiority trial
- Author
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Prick, B., Jansen, A., Steegers, E., Hop, W., Essink-Bot, M., Groot, C. de, Akerboom, B., Alphen, M. van, Bloemenkamp, K., Boers, K., Bremer, H., Kwee, A., Loon, A. van, Metz, G., Papatsonis, D., Post, J. van der, Porath, M., Rijnders, R., Roumen, F., Scheepers, H., Schippers, D., Schuitemaker, N., Stigter, R., Woiski, M.D., Mol, B., Rhenen, D. van, Duvekot, J., Prick, B., Jansen, A., Steegers, E., Hop, W., Essink-Bot, M., Groot, C. de, Akerboom, B., Alphen, M. van, Bloemenkamp, K., Boers, K., Bremer, H., Kwee, A., Loon, A. van, Metz, G., Papatsonis, D., Post, J. van der, Porath, M., Rijnders, R., Roumen, F., Scheepers, H., Schippers, D., Schuitemaker, N., Stigter, R., Woiski, M.D., Mol, B., Rhenen, D. van, and Duvekot, J.
- Abstract
Item does not contain fulltext, OBJECTIVE: To assess the effect of red blood cell (RBC) transfusion on quality of life in acutely anaemic women after postpartum haemorrhage. DESIGN: Randomised non-inferiority trial. SETTING: Thirty-seven Dutch university and general hospitals. POPULATION: Women with acute anaemia (haemoglobin 4.8-7.9 g/dl [3.0-4.9 mmol/l] 12-24 hours postpartum) without severe anaemic symptoms or severe comorbidities. METHODS: Women were allocated to RBC transfusion or non-intervention. MAIN OUTCOME MEASURES: Primary outcome was physical fatigue 3 days postpartum (Multidimensional Fatigue Inventory, scale 4-20; 20 represents maximal fatigue). Non-inferiority was demonstrated if the physical fatigue difference between study arms was maximal 1.3. Secondary outcomes were health-related quality of life and physical complications. Health-related quality of life questionnaires were completed at five time-points until 6 weeks postpartum. RESULTS: In all, 521 women were randomised to non-intervention (n = 262) or RBC transfusion (n = 259). Mean physical fatigue score at day 3 postpartum, adjusted for baseline and mode of delivery, was 0.8 lower in the RBC transfusion arm (95% confidence interval: 0.1-1.5, P = 0.02) and at 1 week postpartum was 1.06 lower (95% confidence interval: 0.3-1.8, P = 0.01). A median of two RBC units was transfused in the RBC transfusion arm. In the non-intervention arm, 33 women received RBC transfusion, mainly because of anaemic symptoms. Physical complications were comparable. CONCLUSIONS: Statistically, non-inferiority could not be demonstrated as the confidence interval crossed the non-inferiority boundary. Nevertheless, with only a small difference in physical fatigue and no differences in secondary outcomes, implementation of restrictive management seems clinically justified.
- Published
- 2014
23. Vleermuizen gaan achteruit in Vlaanderen : resultaten van de rapportering 2013 van de Europees beschermde soorten en habitattypes
- Author
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Dekeukeleire, D., De Knijf, G., Boers, K., Gyselings, R., Paelinckx, D., Dekeukeleire, D., De Knijf, G., Boers, K., Gyselings, R., and Paelinckx, D.
- Abstract
Vleermuizen vormen een sterk bedreigde diergroep. Alle soorten zijn dan ook Europees beschermd via de Habitatrichtlijn. Een van de verplichtingen van die richtlijn is dat de lidstaten om de zes jaar moeten rapporteren over de staat van instandhouding, zeg maar hoe goed of hoe slecht het met de soort (of het habitattype) is gesteld. In dit artikel bespreken we de resultaten van de rapportage voor de vleermuissoorten in Vlaanderen in 2013.
- Published
- 2014
24. Soldiers and Sacred Space: Letterwriting and atrocity in the Later Roman Empire 300-420 AD.
- Author
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Boers, K., Meens, dr. R. (Thesis Advisor), Boers, K., and Meens, dr. R. (Thesis Advisor)
- Abstract
Gauging Orosius' narrative on the sack of Rome in the context of late antique violence and church controversy.
- Published
- 2012
25. Caesarean section rates and adverse neonatal outcomes after induction of labour versus expectant management in women with an unripe cervix: a secondary analysis of the HYPITAT and DIGITAT trials.
- Author
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Bernardes, TP, Broekhuijsen, K, Koopmans, CM, Boers, KE, Wyk, L, Tajik, P, Pampus, MG, Scherjon, SA, Mol, BW, Franssen, MT, Berg, PP, Groen, H, Bernardes, T P, Koopmans, C M, Boers, K E, van Wyk, L, van Pampus, M G, Scherjon, S A, Mol, B W, and Franssen, M T
- Subjects
LABOR (Obstetrics) ,DELIVERY (Obstetrics) ,CHILDBIRTH ,CESAREAN section ,QUANTITATIVE research - Abstract
Objective: To evaluate caesarean section and adverse neonatal outcome rates after induction of labour or expectant management in women with an unripe cervix at or near term.Design: Secondary analysis of data from two randomised clinical trials.Setting: Data were collected in two nationwide Dutch trials.Population: Women with hypertensive disease (HYPITAT trial) or suspected fetal growth restriction (DIGITAT trial) and a Bishop score ≤6.Methods: Comparison of outcomes after induction of labour and expectant management.Main Outcome Measures: Rates of caesarean section and adverse neonatal outcome, defined as 5-minute Apgar score ≤6 and/or arterial umbilical cord pH <7.05 and/or neonatal intensive care unit admission and/or seizures and/or perinatal death.Results: Of 1172 included women with an unripe cervix, 572 had induction of labour and 600 had expectant management. We found no significant difference in the overall caesarean rate (difference -1.1%, 95% CI -5.4 to 3.2). Induction of labour did not increase caesarean rates in women with Bishop scores from 3 to 6 (difference -2.7%, 95% CI -7.6 to 2.2) or adverse neonatal outcome rates (difference -1.5%, 95% CI -4.3 to 1.3). However, there was a significant difference in the rates of arterial umbilical cord pH <7.05 favouring induction (difference -3.2%, 95% CI -5.6 to -0.9). The number needed to treat to prevent one case of umbilical arterial pH <7.05 was 32.Conclusions: We found no evidence that induction of labour increases the caesarean rate or compromises neonatal outcome as compared with expectant management. Concerns over increased risk of failed induction in women with a Bishop score from 3 to 6 seem unwarranted.Tweetable Abstract: Induction of labour at low Bishop scores does not increase caesarean section rate or poor neonatal outcome. [ABSTRACT FROM AUTHOR]- Published
- 2016
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26. Disproportionate Intrauterine Growth Intervention Trial At Term (DIGITAT)
- Author
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Boers, K., primary
- Published
- 2012
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27. Reducing Outage Durations Through Improved Protection and Autorestoration in Distribution Substations
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Pickett, B., primary, Sidhu, T., additional, Anderson, S., additional, Apostolov, A., additional, Bentert, B., additional, Boers, K., additional, Bolado, O., additional, Carroll, P., additional, Chano, S., additional, Chaudhary, A., additional, Cobelo, F., additional, Cooley, K., additional, Cooper, M., additional, Cornelison, R., additional, Elkin, P., additional, Elneweihi, A., additional, Garcia, R., additional, Gardner, K., additional, Kern, T., additional, Kasztenny, B., additional, Michel, G., additional, Niemira, J., additional, Nissen, T., additional, Charles, S., additional, Ware, D., additional, and Plumptre, F., additional
- Published
- 2011
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28. Labour and Neonatal Outcome in Small for Gestational Age Babies Delivered Beyond 36+0 Weeks: A Retrospective Cohort Study
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Boers, K. E., primary, van der Post, J. A. M., additional, Mol, Ben W. J., additional, van Lith, J. M. M., additional, and Scherjon, S. A., additional
- Published
- 2011
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29. Prediction of neonatal outcome in women with gestational hypertension or mild preeclampsia after 36 weeks of gestation.
- Author
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van der Tuuk, K., Holswilder-Olde Scholtenhuis, M. A. G., Koopmans, C. M., van den Akker, E. S. A., Pernet, P. J. M., Ribbert, L. S. M., van Meir, C. A., Boers, K., Drogtrop, A. P., van Loon, A. J., Hanssen, M. J. C. P., Sporken, J. M. J., Mol, B. W. J., van den Berg, P. P., Groen, H., and van Pampus, M. G.
- Subjects
NEONATAL intensive care ,GESTATIONAL age ,HYPERTENSION ,PREECLAMPSIA ,AMNIOTIC liquid - Abstract
Background: There is little knowledge about neonatal complications in GH and PE and induction at term, we aim to assess whether they can be predicted from clinical data. Methods: We used data of the HYPITAT trial and evaluated whether adverse neonatal outcome (Apgar score < 7, pH < 7.05, NICU admission) could be predicted from clinical data. Logistic regression, ROC analysis and calibration were used to identify predictors and evaluate the predictive capacity in an antepartum and intrapartum model. Results: We included 1153 pregnancies, of whom 76 (6.6%) had adverse neonatal outcome. Parity (primipara OR 2.75), BMI (OR 1.06), proteinuria (dipstick +++ OR 2.5), uric acid (OR 1.4) and creatinine (OR 1.02) were independent antepartum predictors; In the intrapartum model, meconium stained amniotic fluid (OR 2.2), temperature (OR 1.8), duration of first stage of labour (OR 1.15), proteinuria (dipstick +++ OR 2.7), creatinine (OR 1.02) and uric acid (OR 1.5) were predictors of adverse neonatal outcome. Both models showed good discrimination (AUC 0.75 and 0.78), but calibration was limited (Hosmer-Lemeshow p = 0.41, and p = 0.20). Conclusions: In women with GH or PE at term, it is difficult to predict neonatal complications, possibly since they are rare in the term pregnancy. However, the identified individual predictors may guide physicians to anticipate requirements for neonatal care. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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30. Evaluation of neonatal outcomes after elective family centered Caesarean sections
- Author
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Narayen, I., Mulder, E., Freeman, L., Vonderen, J., Boers, K., Enrico Lopriore, Hooper, S., and Te Pas, A.
31. Cesarean Section Rates and Adverse Neonatal Outcomes After Induction of Labour Versus Expectant Management in Women With an Unripe Cervix: A Secondary Analysis of the HYPITAT and DIGITAT Trials.
- Author
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Bernardes, T. P., Broekhuijsen, K., Koopmans, C. M., Boers, K. E., van Wyk, L., Tajik, P., van Pampus, M. G., Scherjon, S. A., Mol, B. W., Franssen, M. T., van den Berg, P. P., and Groen, H.
- Published
- 2017
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32. Well being of obstetric patients on minimal blood transfusions (WOMB trial)
- Author
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Bloemenkamp Kitty WM, Schippers Daniela H, Spaanderman Marc EA, Rijnders Robbert JP, Porath Martina, van Alphen Marcel, van der Post Joris AM, Stigter Rob H, van Loon Aren J, Bremer Henk A, Metz Godfried CH, Akerboom Bettina MC, Papatsonis Dimitri NM, Uyl-de Groot Carin A, Peters Nina CJ, Essink-Bot Marie-Louise, Hop Wim CJ, Jansen AJ Gerard, Steegers Eric AP, Prick Babette W, Boers Kim E, Scheepers Hubertina CJ, Roumen Frans JME, Kwee Anneke, Schuitemaker Nico WE, Mol Ben Willem J, van Rhenen Dick J, and Duvekot Johannes J
- Subjects
Gynecology and obstetrics ,RG1-991 - Abstract
Abstract Background Primary postpartum haemorrhage is an obstetrical emergency often causing acute anaemia that may require immediate red blood cell (RBC) transfusion. This anaemia results in symptoms such as fatigue, which may have major impact on the health-related quality of life. RBC transfusion is generally thought to alleviate these undesirable effects although it may cause transfusion reactions. Moreover, the postpartum haemoglobin level seems to influence fatigue only for a short period of time. At present, there are no strict transfusion criteria for this specific indication, resulting in a wide variation in postpartum policy of RBC transfusion in the Netherlands. Methods/Design The WOMB trial is a multicentre randomised non-inferiority trial. Women with acute anaemia due to postpartum haemorrhage, 12-24 hours after delivery and not initially treated with RBC transfusion, are eligible for randomisation. Patients with severe physical complaints are excluded. Patients are randomised for either RBC transfusion or expectant management. Health related quality of life (HRQoL) will be assessed at inclusion, at three days and one, three and six weeks postpartum with three validated measures (Multi-dimensional Fatigue Inventory, ShortForm-36, EuroQol-5D). Primary outcome of the study is physical fatigue three days postpartum. Secondary outcome measures are general and mental fatigue scores and generic health related quality of life scores, the number of RBC transfusions, length of hospital stay, complications and health-care costs. The primary analysis will be by intention-to-treat. The various longitudinal scores will be evaluated using Repeated Measurements ANOVA. A costs benefit analysis will also be performed. The power calculation is based on the exclusion of a difference in means of 1.3 points or greater in favour of RBC transfusion arm regarding physical fatigue subscale. With missing data not exceeding 20%, 250 patients per arm have to be randomised (one-sided alpha = 0.025, power = 80%). Discussion This study will provide evidence for a guideline regarding RBC transfusion in the postpartum patient suffering from acute anaemia. Equivalence in fatigue score, remaining HRQoL scores and physical complications between both groups is assumed, in which case an expectant management would be preferred to minimise transfusion reactions and costs. Trial registration ClinicalTrials.gov NCT00335023, Nederlands Trial Register NTR335
- Published
- 2010
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33. Disproportionate Intrauterine Growth Intervention Trial At Term: DIGITAT
- Author
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Huisjes Anjoke JM, van der Salm Paulien CM, Drogtrop Addie P, Ribbert Lucy SM, Bekedam Dick J, van der Post Joris AM, van Meir Claudia A, Bloemenkamp Kitty WM, Stigter Rob H, van Pampus Marielle G, Birnie Erwin, LeCessie Saskia, Mol Ben WJ, Bijlenga Denise, Boers Kim E, Willekes Christine, Roumen Frans JME, Scheepers Hubertina CJ, de Boer Karin, Duvekot Johannes J, Thornton Jim G, and Scherjon Sicco A
- Subjects
Gynecology and obstetrics ,RG1-991 - Abstract
Abstract Background Around 80% of intrauterine growth restricted (IUGR) infants are born at term. They have an increase in perinatal mortality and morbidity including behavioral problems, minor developmental delay and spastic cerebral palsy. Management is controversial, in particular the decision whether to induce labour or await spontaneous delivery with strict fetal and maternal surveillance. We propose a randomised trial to compare effectiveness, costs and maternal quality of life for induction of labour versus expectant management in women with a suspected IUGR fetus at term. Methods/design The proposed trial is a multi-centre randomised study in pregnant women who are suspected on clinical grounds of having an IUGR child at a gestational age between 36+0 and 41+0 weeks. After informed consent women will be randomly allocated to either induction of labour or expectant management with maternal and fetal monitoring. Randomisation will be web-based. The primary outcome measure will be a composite neonatal morbidity and mortality. Secondary outcomes will be severe maternal morbidity, maternal quality of life and costs. Moreover, we aim to assess neurodevelopmental and neurobehavioral outcome at two years as assessed by a postal enquiry (Child Behavioral Check List-CBCL and Ages and Stages Questionnaire-ASQ). Analysis will be by intention to treat. Quality of life analysis and a preference study will also be performed in the same study population. Health technology assessment with an economic analysis is part of this so called Digitat trial (Disproportionate Intrauterine Growth Intervention Trial At Term). The study aims to include 325 patients per arm. Discussion This trial will provide evidence for which strategy is superior in terms of neonatal and maternal morbidity and mortality, costs and maternal quality of life aspects. This will be the first randomised trial for IUGR at term. Trial registration Dutch Trial Register and ISRCTN-Register: ISRCTN10363217.
- Published
- 2007
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34. Testing on bacterial vaginosis in a subfertile population and time to pregnancy: a prospective cohort study.
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van den Tweel M, van den Munckhof E, van der Zanden M, Le Cessie S, van Lith J, and Boers K
- Subjects
- Humans, Female, Adult, Prospective Studies, Pregnancy, Netherlands epidemiology, Vagina microbiology, Microbiota, Male, Infertility microbiology, RNA, Ribosomal, 16S genetics, Vaginosis, Bacterial microbiology, Vaginosis, Bacterial diagnosis, Vaginosis, Bacterial epidemiology, Time-to-Pregnancy
- Abstract
Purpose: This study aimed to investigate the influence of bacterial vaginosis on time to pregnancy in subfertile couples., Methods: Couples attending a teaching hospital in the Netherlands having an initial fertility assessment (IFA) between July 2019 and June 2022 were included in this prospective study, with follow-up of pregnancies until June 2023. Vaginal samples at IFA were analyzed on pH, qPCR BV, and 16S rRNA gene microbiome analysis of V1-V2 region. Main outcome measures were time from initial fertility assessment to ongoing pregnancy at 12 weeks and live birth, analyzed by Kaplan-Meier and Cox regression with adjustment for potential confounders., Results: At IFA, 27% of 163 included participants tested positive for BV. BV status had no influence on time to ongoing pregnancy (HR 0.98, 0.60-1.61, aHR 0.97, 0.58-1.62). In persons with unexplained subfertility, positive BV status had a tendency of longer time to pregnancy. When persons had an indication for fertility treatment, positive BV status (HR 0.21, 0.05-0.88, aHR 0.19, 0.04-0.85) and microbiome community state type III and type IV had significant longer time to pregnancy., Conclusion: This study indicates that BV may have a potential negative impact on time to live birth pregnancy in subfertile persons with an indication for fertility treatment. This study did not find an association between BV and time to live birth pregnancy in a general group of subfertile couples or in unexplained subfertility. More research should be done in persons with unexplained subfertility and if treatment improves time to pregnancy., (© 2024. The Author(s).)
- Published
- 2024
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35. The Vaginal Microbiome Changes During Various Fertility Treatments.
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van den Tweel MM, van den Munckhof EHA, van der Zanden M, Molijn A, van Lith JMM, and Boers KE
- Subjects
- Humans, Female, Adult, Prospective Studies, Pregnancy, Vaginosis, Bacterial microbiology, Fertilization in Vitro methods, Ovulation Induction methods, Fertility, Lactobacillus isolation & purification, Infertility therapy, Infertility microbiology, Vagina microbiology, Microbiota drug effects
- Abstract
This study aimed to investigate the influence of hormonal treatment on the vaginal microbiome during fertility treatments. Bacterial vaginosis (BV) could affect fecundity, particularly in the in vitro fertilization (IVF) population, where negative effects on pregnancy outcomes have been reported. It is hypothesized that the hormone treatment during fertility treatments could influence the abundance of Lactobacilli, with negative effects on the pregnancy results. A total of 53 couples attending a fertility clinic in the Netherlands between July 2019 and August 2022 were included in this prospective cohort study. Vaginal samples were collected at start of treatment, oocyte retrieval or insemination from subjects undergoing intra uterine insemination (IUI) with mild ovarian stimulation, and IVF or intra cytoplasmatic sperm injection (ICSI) with controlled ovarian hyperstimulation. AmpliSens® Florocenosis/Bacterial vaginosis-FRT qPCR and 16S rRNA gene-based amplicon sequencing were performed on all samples. In total, 140 swabs were analyzed, with a median of two swabs per person. 33 (24%) tested qPCR BV positive. Lactobacilli percentage decreased during fertility treatments, leading to changes in the vaginal microbiome. Shannon diversity index was not significantly different. Of the total of 53 persons, nine switched from qPCR BV negative to positive during treatment. The persons switching to qPCR BV positive had already a (not significant) higher Shannon diversity index at start of treatment. If the vaginal microbiome of persons deteriorates during fertility treatments, timing of following treatments, lifestyle modifications, or a freeze all strategy could be of possible benefit., (© 2024. The Author(s).)
- Published
- 2024
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36. "Hypertension in Pregnancy Intervention Trial At Term" and "Disproportionate Intrauterine Growth Intervention Trial At Term" Studies.
- Author
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van Pampus MG, van der Post JAM, Verhoeven CJ, Koopmans CM, Langenveld J, Broekhuijsen K, de Sonnaville CMW, van der Tuuk K, Boers K, Groen H, Vijgen S, Bijlenga D, Scherjon S, and Mol BW
- Subjects
- Humans, Pregnancy, Female, Labor, Induced methods, Infant, Newborn, Fetal Growth Retardation prevention & control, Hypertension, Pregnancy-Induced prevention & control, Hypertension, Pregnancy-Induced therapy
- Abstract
In 2003, in the context of a national research funding program in which obstetric research was prioritized, several perinatal centers took the initiative to jointly submit a number of applications to the subsidy programs of Effectiveness Research and Prevention of ZonMw. This has led to the funding of the Obstetric Consortium with several projects, including the "Hypertension in Pregnancy Intervention Trial At Term" and the "Disproportionate Intrauterine Growth Intervention Trial At Term" studies. The studies showed that induction of labor for hypertension and growth restriction at term was the appropriate management. Subsequent implementation improved maternal and perinatal outcomes., (Copyright © 2024 Wolters Kluwer Health, Inc. All rights reserved.)
- Published
- 2024
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37. Planned delivery or expectant management in preeclampsia: an individual participant data meta-analysis.
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Beardmore-Gray A, Seed PT, Fleminger J, Zwertbroek E, Bernardes T, Mol BW, Battersby C, Koopmans C, Broekhuijsen K, Boers K, Owens MY, Thornton J, Green M, Shennan AH, Groen H, and Chappell LC
- Subjects
- Cesarean Section, Data Analysis, Female, Fetal Growth Retardation, Gestational Age, Humans, Infant, Infant, Newborn, Labor, Induced, Pregnancy, Watchful Waiting, Perinatal Death, Pre-Eclampsia epidemiology, Pre-Eclampsia therapy
- Abstract
Objective: Pregnancy hypertension is a leading cause of maternal and perinatal mortality and morbidity. Between 34
+0 and 36+6 weeks gestation, it is uncertain whether planned delivery could reduce maternal complications without serious neonatal consequences. In this individual participant data meta-analysis, we aimed to compare planned delivery to expectant management, focusing specifically on women with preeclampsia., Data Sources: We performed an electronic database search using a prespecified search strategy, including trials published between January 1, 2000 and December 18, 2021. We sought individual participant-level data from all eligible trials., Study Eligibility Criteria: We included women with singleton or multifetal pregnancies with preeclampsia from 34 weeks gestation onward., Methods: The primary maternal outcome was a composite of maternal mortality or morbidity. The primary perinatal outcome was a composite of perinatal mortality or morbidity. We analyzed all the available data for each prespecified outcome on an intention-to-treat basis. For primary individual patient data analyses, we used a 1-stage fixed effects model., Results: We included 1790 participants from 6 trials in our analysis. Planned delivery from 34 weeks gestation onward significantly reduced the risk of maternal morbidity (2.6% vs 4.4%; adjusted risk ratio, 0.59; 95% confidence interval, 0.36-0.98) compared with expectant management. The primary composite perinatal outcome was increased by planned delivery (20.9% vs 17.1%; adjusted risk ratio, 1.22; 95% confidence interval, 1.01-1.47), driven by short-term neonatal respiratory morbidity. However, infants in the expectant management group were more likely to be born small for gestational age (7.8% vs 10.6%; risk ratio, 0.74; 95% confidence interval, 0.55-0.99)., Conclusion: Planned early delivery in women with late preterm preeclampsia provides clear maternal benefits and may reduce the risk of the infant being born small for gestational age, with a possible increase in short-term neonatal respiratory morbidity. The potential benefits and risks of prolonging a pregnancy complicated by preeclampsia should be discussed with women as part of a shared decision-making process., (Copyright © 2022 The Authors. Published by Elsevier Inc. All rights reserved.)- Published
- 2022
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38. The vaginal microbiota in the course of bacterial vaginosis treatment.
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Zwittink RD, van den Munckhof EHA, Leverstein-van Hall MA, Boers K, Molijn A, Knetsch CW, and Kuijper EJ
- Subjects
- Adult, Bacteria classification, Bacteria drug effects, Bacteria genetics, Bacteria isolation & purification, Clindamycin therapeutic use, Female, Host Specificity, Humans, Metronidazole therapeutic use, RNA, Ribosomal, 16S genetics, Vagina microbiology, Vaginal Discharge drug therapy, Vaginal Discharge microbiology, Anti-Bacterial Agents therapeutic use, Microbiota drug effects, Vaginosis, Bacterial drug therapy, Vaginosis, Bacterial microbiology
- Abstract
Bacterial vaginosis (BV) is perceived as a condition of disrupted vaginal microbiota, but remains of unknown aetiology. In this study, vaginal microbiota composition was determined in twenty-one women with BV, before and after treatment with metronidazole or clindamycin. Microbiota composition varied greatly between women and defining a (un)healthy vaginal microbiota state remains elusive, challenging BV diagnosis and treatment. While relative abundance of Lactobacillus increased after antibiotic treatment in two-third of women, its abundance was not associated with treatment outcome. Instead, remaining complaints of abnormal vaginal discharge were more common after metronidazole treatment and associated with increased relative abundance of Ureaplasma.
- Published
- 2021
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39. Pregnancy and coeliac disease.
- Author
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Boers K, Vlasveld T, and van der Waart R
- Subjects
- Adult, Anemia, Iron-Deficiency diagnosis, Anemia, Iron-Deficiency etiology, Anemia, Iron-Deficiency immunology, Biopsy, Celiac Disease diagnosis, Celiac Disease diet therapy, Diagnosis, Differential, Diet, Gluten-Free methods, Female, Fetal Growth Retardation prevention & control, Humans, Pregnancy, Pregnancy Outcome epidemiology, Premature Birth prevention & control, Stillbirth epidemiology, Thrombocythemia, Essential diagnosis, Treatment Outcome, Celiac Disease complications, Duodenum pathology, Fetal Growth Retardation etiology
- Abstract
Coeliac disease (CD) is a small bowel disorder known for its intestinal manifestations like diarrhoea and weight loss. Less known are the extraintestinal manifestations of CD like haematological abnormalities but also altered female reproduction and pregnancy outcomes. Especially, undiagnosed CD may lead to adverse reproductive outcomes such as intrauterine growth restriction, stillbirth and preterm birth. In diagnosed and treated CD, adverse pregnancy outcomes might be prevented., Competing Interests: Competing interests: None declared., (© BMJ Publishing Group Limited 2019. No commercial re-use. See rights and permissions. Published by BMJ.)
- Published
- 2019
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40. S100 calcium-binding protein B in older patients with depression treated with electroconvulsive therapy.
- Author
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Carlier A, Boers K, Veerhuis R, Bouckaert F, Sienaert P, Eikelenboom P, Vandenbulcke M, Stek ML, van Exel E, Dols A, and Rhebergen D
- Subjects
- Age of Onset, Aged, Aged, 80 and over, Biomarkers blood, Depressive Disorder, Major diagnosis, Depressive Disorder, Major epidemiology, Female, Humans, Male, Middle Aged, Prognosis, Psychiatric Status Rating Scales, Treatment Outcome, Depressive Disorder, Major blood, Depressive Disorder, Major therapy, Electroconvulsive Therapy, S100 Calcium Binding Protein beta Subunit blood
- Abstract
Background: Increasing evidence suggests that glial mediated disruption of neuroplasticity contributes to depression. S100 calcium-binding protein B (S100B) promotes neuronal protection in nanomolar concentrations. Studies on its possible role as a treatment outcome marker in affective disorders are limited. Recent evidence suggests a putative role for S100B as a state marker of illness activity as it is found elevated in episodes of major depression., Aim: To investigate whether higher S100B is associated with favourable treatment outcome following electroconvulsive therapy (ECT) and to further explore whether S100B reflects a state marker of depression activity., Methods: Serum S100B samples, at baseline and post-ECT and clinical assessments including Montgomery Åsberg Rating scales were collected in 91 older depressed patients (mean age: 73.0 years), referred for ECT. Change in pre- and post-ECT S100B was compared between remitters and nonremitters. Logistic and Cox regression analyses were used to determine whether S100B was associated with remission of depression., Results: Patients with S100B levels in the intermediate tertile, that is, between 33 ng/L and 53 ng/L, had higher odds on remission, odds ratio: 5.5 (95%Confidence Interval (CI): 1.55-19.20, p = <0.01), and were more likely to remit from depression over time, hazard ratio: 1.96 (95%CI: 1.04-3.72, p = 0.04), compared with patients in the lowest tertile. There was no significant decrease in levels of S100B after ECT in both remitters and nonremitters., Conclusion: Our findings demonstrate that patients with higher S100B levels at baseline were more likely to remit from depression suggesting an association between higher S100B and responsiveness to ECT. Next, S100B levels do not decrease after remission, suggesting S100B is not a state marker of depression. S100B is not capable of predicting treatment outcome by itself, further research may combine outcome markers., (Copyright © 2019 Elsevier Ltd. All rights reserved.)
- Published
- 2019
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41. Repeated oral glucose tolerance tests in women at risk for gestational diabetes mellitus.
- Author
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de Wit L, Bos DM, van Rossum AP, van Rijn BB, and Boers KE
- Subjects
- Adult, Female, Glucose Tolerance Test, Humans, Pregnancy, Retrospective Studies, Diabetes, Gestational diagnosis
- Abstract
Objective: Pregnant women with a negative oral glucose tolerance test (OGTT) between 24-28 weeks as part of risk-based screening for gestational diabetes mellitus (GDM) may develop clinical signs or symptoms suggestive for GDM in the third trimester. We aimed to determine the additional yield of repeating an OGTT to detect missed GDM in this group and assess patient characteristics and indications associated with a positive second OGTT., Study Design: We conducted a retrospective cohort study of women with a negative OGTT between 24-28 weeks of pregnancy in two hospitals in the Netherlands. Patient characteristics, pregnancy outcomes, OGTT results and indications were compared between women with normal (non-GDM) and abnormal (GDM) results of the second OGTT, using the WHO 1999 criteria (fasting glucose ≥7.0 mmol/L or 2 -h post load ≥7.8 mmol/L). We used receiver operating characteristic (ROC) curve analysis to determine cut-offs for fasting and 2 -h glucose values of the index OGTT that were associated with a positive OGTT in the third trimester., Results: Of 3147 women at risk for GDM, 183 underwent a second OGTT in the third trimester following their regular OGTT at 24-28 weeks. In 43 women (23.5%) GDM was diagnosed based on the second OGTT. A history of GDM was associated with subsequent GDM diagnosis, with an odds ratio of 2.6 (95% CI 1.0-6.3). Both fasting and 2 -h post load glucose values of the index OGTT were significantly higher in women with abnormal OGTT results later in pregnancy. Index OGTT glucose value cut-offs of 4.8 mmol/L (fasting) and 6.5 mmol/L (2 -h) had positive predictive values of 0.32 and 0.47 for a positive OGTT in the third trimester, and negative predictive values of 0.83 and 0.90, respectively. Fetal growth as a clinical symptom for GDM was the most frequent indication for repeating the OGTT, resulting in the diagnosis of GDM in 22.7% of women tested for this indication., Conclusion: Repeating an OGTT after initial negative screening results in additional GDM diagnoses. In case of clinical signs, especially in women with additional risk factors such as a history of GDM or higher index OGTT glucose values, repeating an OGTT could be considered., (Copyright © 2019 Elsevier B.V. All rights reserved.)
- Published
- 2019
- Full Text
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42. Investigation of multiple mortality events in eastern box turtles (Terrapene carolina carolina).
- Author
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Adamovicz L, Allender MC, Archer G, Rzadkowska M, Boers K, Phillips C, Driskell E, Kinsel MJ, and Chu C
- Subjects
- Animal Diseases blood, Animal Diseases pathology, Animals, Animals, Wild, Blood Cell Count, Disease Outbreaks, Ecosystem, Epidemiological Monitoring, Illinois, Parks, Recreational, Time Factors, Animal Diseases mortality, Turtles
- Abstract
Wildlife mortality investigations are important for conservation, food safety, and public health; but they are infrequently reported for cryptic chelonian species. Eastern box turtles (Terrapene carolina carolina) are declining due to anthropogenic factors and disease, and while mortality investigations have been reported for captive and translocated individuals, few descriptions exist for free-living populations. We report the results of four natural mortality event investigations conducted during routine health surveillance of three Illinois box turtle populations in 2011, 2013, 2014, and 2015. In April 2011, over 50 box turtles were found dead and a polymicrobial necrotizing bacterial infection was diagnosed in five survivors using histopathology and aerobic/anaerobic culture. This represents the first reported occurrence of necrotizing bacterial infection in box turtles. In August 2013, paired histopathology and qPCR ranavirus detection in nine turtles was significantly associated with occupation of moist microhabitats, identification of oral plaques and nasal discharge on physical exam, and increases in the heterophil count and heterophil to lymphocyte ratio (p < 0.05). In July 2014 and 2015, ranavirus outbreaks reoccurred within a 0.2km radius of highly-disturbed habitat containing ephemeral ponds used by amphibians for breeding. qPCR ranavirus detection in five individuals each year was significantly associated with use of moist microhabitats (p < 0.05). Detection of single and co-pathogens (Terrapene herpesvirus 1, adenovirus, and Mycoplasma sp.) was common before, during, and after mortality events, but improved sample size would be necessary to determine the impacts of these pathogens on the occurrence and outcome of mortality events. This study provides novel information about the causes and predictors of natural box turtle mortality events. Continued investigation of health, disease, and death in free-living box turtles will improve baseline knowledge of morbidity and mortality, identify threats to survival, and promote the formation of effective conservation strategies.
- Published
- 2018
- Full Text
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43. Lipschütz Ulcers: A Rare Diagnosis in Women With Vulvar Ulceration.
- Author
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Wolters V, Hoogslag I, Van' T Wout J, and Boers K
- Subjects
- Adolescent, Analgesics therapeutic use, Antibodies, Viral blood, Diagnosis, Differential, Female, Herpesvirus 4, Human genetics, Herpesvirus 4, Human isolation & purification, Humans, Polymerase Chain Reaction, Tonsillitis virology, Ulcer therapy, Vulvar Diseases therapy, Epstein-Barr Virus Infections diagnosis, Ulcer virology, Vulvar Diseases virology
- Abstract
Background: Lipschütz ulcers are characterized by painful vulvar ulceration, most commonly in young women. Because these lesions are so rarely seen, the diagnosis can be challenging., Case: An 18-year-old woman, without any prior sexual activity, developed painful blue vulval lesions. These became necrotizing ulcers, and she began antiviral therapy for presumptive herpes infection. Herpes cultures, however, were negative. Serology consistent with a recent Epstein-Barr virus infection resulted in a diagnosis of Lipschütz ulcers., Conclusion: Lipschütz ulcers, associated with acute Epstein-Barr virus infection or other viral and bacterial infections, are a type of nonsexually transmitted vulvar ulceration. It is important to avoid selective attention to sexually transmitted infections as the etiology to avoid unnecessary antiviral therapy and immune suppressants. By considering other etiologies, the patient will be spared potentially embarrassing persistent questioning about her sexual history.
- Published
- 2017
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44. Relevance of individual participant data meta-analysis for studies in obstetrics: delivery versus expectant monitoring for hypertensive disorders of pregnancy.
- Author
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Broekhuijsen K, Bernardes T, van Baaren GJ, Tajik P, Novikova N, Thangaratinam S, Boers K, Koopmans CM, Wallace K, Shennan AH, Langenveld J, Groen H, van den Berg PP, Mol BW, and Franssen MT
- Subjects
- Adult, Cesarean Section adverse effects, Disease Progression, Female, Humans, Hypertension, Pregnancy-Induced mortality, Hypertension, Pregnancy-Induced physiopathology, Infant, Newborn, Male, Pregnancy, Pregnancy Trimester, Third, Premature Birth epidemiology, Premature Birth mortality, Premature Birth prevention & control, Risk, Severity of Illness Index, Hypertension, Pregnancy-Induced therapy, Labor, Induced adverse effects, Precision Medicine, Watchful Waiting
- Abstract
Like many other research subjects in obstetrics, research on immediate delivery versus expectant monitoring for women with hypertensive disorders of pregnancy faces certain challenges when it comes to interpretation and generalisation of the results; relatively rare outcomes are studied, in a clinically heterogeneous population, while the clinical practice in some countries has dictated that studies in term pregnancy were completed before earlier gestational ages could be studied. This has resulted in multiple smaller studies, some studying surrogate outcome measures, with different in- and exclusion criteria, and without enough power for reliable subgroup analyses. All this complicates the generation of definitive answers and implementation of the results into clinical practice. Performing multiple studies and subsequently pooling their results in a meta-analysis can be a way to overcome the difficulties of studying relatively rare outcomes and subgroups with enough power, as well as a solution to reach a final answer on questions involving an uncertain and possibly harmful intervention. However, in the case of the current studies on delivery versus expectant monitoring in women with hypertensive disorders of pregnancy, differences regarding eligibility criteria, outcome measures and subgroup definitions make it difficult to pool their results in an aggregate meta-analysis. Individual patient data meta-analysis (IPDMA) has the potential to overcome these challenges, because it allows for flexibility regarding the choice of endpoints and standardisation of inclusion and exclusion criteria across studies. In addition, it has more statistical power for informative subgroup analyses. We therefore propose an IPDMA on immediate delivery versus expectant monitoring for hypertensive disorders of pregnancy, and advocate the use of IPDMA for research questions in obstetrics that face similar challenges., (Copyright © 2015 Elsevier Ireland Ltd. All rights reserved.)
- Published
- 2015
- Full Text
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45. Transfusion policy after severe postpartum haemorrhage: a randomised non-inferiority trial.
- Author
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Prick BW, Jansen AJ, Steegers EA, Hop WC, Essink-Bot ML, Uyl-de Groot CA, Akerboom BM, van Alphen M, Bloemenkamp KW, Boers KE, Bremer HA, Kwee A, van Loon AJ, Metz GC, Papatsonis DN, van der Post JA, Porath MM, Rijnders RJ, Roumen FJ, Scheepers HC, Schippers DH, Schuitemaker NW, Stigter RH, Woiski MD, Mol BW, van Rhenen DJ, and Duvekot JJ
- Subjects
- Adult, Anemia etiology, Fatigue etiology, Female, Follow-Up Studies, Hospitals, General, Hospitals, University, Humans, Netherlands, Practice Guidelines as Topic, Quality of Life, Risk Assessment, Severity of Illness Index, Treatment Outcome, Anemia therapy, Erythrocyte Transfusion standards, Fatigue therapy, Maternal Welfare, Postpartum Hemorrhage therapy
- Abstract
Objective: To assess the effect of red blood cell (RBC) transfusion on quality of life in acutely anaemic women after postpartum haemorrhage., Design: Randomised non-inferiority trial., Setting: Thirty-seven Dutch university and general hospitals., Population: Women with acute anaemia (haemoglobin 4.8-7.9 g/dl [3.0-4.9 mmol/l] 12-24 hours postpartum) without severe anaemic symptoms or severe comorbidities., Methods: Women were allocated to RBC transfusion or non-intervention., Main Outcome Measures: Primary outcome was physical fatigue 3 days postpartum (Multidimensional Fatigue Inventory, scale 4-20; 20 represents maximal fatigue). Non-inferiority was demonstrated if the physical fatigue difference between study arms was maximal 1.3. Secondary outcomes were health-related quality of life and physical complications. Health-related quality of life questionnaires were completed at five time-points until 6 weeks postpartum., Results: In all, 521 women were randomised to non-intervention (n = 262) or RBC transfusion (n = 259). Mean physical fatigue score at day 3 postpartum, adjusted for baseline and mode of delivery, was 0.8 lower in the RBC transfusion arm (95% confidence interval: 0.1-1.5, P = 0.02) and at 1 week postpartum was 1.06 lower (95% confidence interval: 0.3-1.8, P = 0.01). A median of two RBC units was transfused in the RBC transfusion arm. In the non-intervention arm, 33 women received RBC transfusion, mainly because of anaemic symptoms. Physical complications were comparable., Conclusions: Statistically, non-inferiority could not be demonstrated as the confidence interval crossed the non-inferiority boundary. Nevertheless, with only a small difference in physical fatigue and no differences in secondary outcomes, implementation of restrictive management seems clinically justified., (© 2014 Royal College of Obstetricians and Gynaecologists.)
- Published
- 2014
- Full Text
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46. Suspected versus non-suspected small-for-gestational age fetuses at term: perinatal outcomes.
- Author
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Verlijsdonk JW, Winkens B, Boers K, Scherjon S, and Roumen F
- Subjects
- Adult, Delivery, Obstetric statistics & numerical data, Female, Humans, Infant, Newborn, Logistic Models, Netherlands epidemiology, Pregnancy, Pregnancy Outcome, Retrospective Studies, Young Adult, Fetal Growth Retardation diagnosis, Infant Mortality, Infant, Small for Gestational Age, Perinatal Mortality
- Abstract
Objective: To compare perinatal outcomes of suspected versus non-suspected small-for-gestational age fetuses (SGA) at term., Methods: Retrospective cohort study among all term singleton neonates with a birth weight <10th percentile born in the Parkstad region between 1 January 2006 and 3 March 2008. The subjects were assigned to a prenatally suspected or non-suspected SGA group. Primary outcome was adverse neonatal outcome at birth, defined as a composite of intrauterine fetal death, Apgar <7 at 5 min, or pH umbilical artery <7.05. Secondary outcome included neonatal medium care unit (NMCU) admission ≥ 7 days., Results: 430 subjects were included in the study; 36.7% was suspected of SGA. In the suspected SGA group mean gestational age at birth and birth weight were significantly lower, whereas maternal morbidity was significantly higher. The incidence of labor induction and elective cesarean section were also significantly higher in the suspected SGA group. Total perinatal mortality was 2.1%. Identification of SGA and subsequent management led to a significant decrease of adverse neonatal outcome at birth, but did not lead to a significant decrease in NMCU admission ≥ 7 days., Conclusions: Suspicion of SGA was associated with a more active management of labor and delivery, resulting in a better neonatal outcome at birth.
- Published
- 2012
- Full Text
- View/download PDF
47. [Diagnostic image (98). A woman with a vanished intra-uterine device].
- Author
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Boers KE, Dekker JW, and Yedema CA
- Subjects
- Abdominal Pain etiology, Adult, Female, Humans, Peritoneal Cavity, Radiography, Abdominal, Uterus, Intrauterine Devices adverse effects, Uterine Perforation etiology
- Abstract
A 36-year-old woman suffered from abdominal pain immediately after placement of an intra-uterine device (IUD). Abdominal X-ray revealed that the IUD had perforated the uterus and lay in the peritoneal cavity.
- Published
- 2002
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