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9. Predictive Value of Cervical Length Measurement and Fibronectin Testing in Threatened Preterm Labor

Author

van Baaren, Gert-Jan, Vis, Jolande Y., Wilms, Femke F., Oudijk, Martijn A., Kwee, Anneke, Porath, Martina M., Oei, Guid, Scheepers, Hubertina C. J., Spaanderman, Marc E. A., Bloemenkamp, Kitty W. M., Haak, Monique C., Bolte, Antoinette C., Bax, Caroline J., Cornette, Jérôme M. J., Duvekot, Johannes J., Nij Bijvanck, Bas W. A., van Eyck, Jim, Franssen, Maureen T. M., Sollie, Krystyna M., Vandenbussche, Frank P. H. A., Woiski, Mallory, Grobman, William A., van der Post, Joris A. M., Bossuyt, Patrick M. M., Opmeer, Brent C., and Mol, Ben W. J.

Published
2014
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18. Acardius anceps with neck cyst and cleft palate: Three dimensional skeletal computed tomography reconstruction with discussion of the literature.

Author

Gemert, Martin J. C., Streekstra, Geert J., Vandenbussche, Frank P. H. A., Nikkels, Peter G. J., and Wijngaard, Jeroen P. H. M.

Abstract

Acardiac twinning is a rare anomaly of monochorionic twin pregnancies. Acardiac fetuses lack a functional heart but are passively perfused by arterial blood from their pump co‐twin causing the acardiac body to be hypoxemic. In this report, we present an acardius anceps, therapeutically laser separated from its pump twin at 16 weeks. The healthy pump twin and macerated acardiac body were born at 40 3/7 weeks. A three dimensional (3D) reconstruction was made by CT images, showing cranial bones, spinal column, pelvis and lower extremities but absent arms. A cyst in the neck of the acardiac twin was identified by postnatal sonography; this was also described in four literature cases, and was additionally observed by us in two other acardiac twins. Median cleft palate was identified by oral cavity inspection but undetectable in the reconstruction. In the literature, we found 21 other acardiac anceps twins with a cleft palate. From the two larger published series, with 12 clefts in 21 acardiac anceps twins, a cleft palate occurs in over 50% during acardiac twinning. Our first hypothesis is that acardiac fetuses develop an oral cleft palate when acardiac onset starts prior to 11 weeks, because 11 weeks includes the period of embryonic oral cavity formation, and no cleft occurs when onset starts later than 11 weeks. Our second hypothesis is that cysts and cleft palates are more common in acardiac twins than currently known, likely reflecting that acardiac bodies are hypoxemic and that hypoxia contributes to the development of both cysts and clefts. [ABSTRACT FROM AUTHOR]

Published
2020
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20. Which Factors Contribute to False-Positive, False-Negative, and Invalid Results in Fetal Fibronectin Testing in Women with Symptoms of Preterm Labor?

Author

Bruijn, Merel M C, Hermans, Frederik J R, Vis, Jolande Y., Wilms, Femke F., Oudijk, Martijn A., Kwee, Anneke, Porath, Martina M., Oei, Guid, Scheepers, Hubertina C. J., Spaanderman, Marc E. A., Bloemenkamp, Kitty W M, Haak, Monique C., Bolte, Antoinette C., Vandenbussche, Frank P. H. A., Woiski, Mallory D, Bax, Caroline J., Cornette, Jérôme M J, Duvekot, Johannes J., Bijvank, Bas W A N I J, van Eyck, Jim, Franssen, Maureen T. M., Sollie, Krystyna M., van der Post, Joris A. M., Bossuyt, Patrick M. M., Kok, Marjolein, Mol, Ben Willem J., van Baaren, Gert-Jan, Bruijn, Merel M C, Hermans, Frederik J R, Vis, Jolande Y., Wilms, Femke F., Oudijk, Martijn A., Kwee, Anneke, Porath, Martina M., Oei, Guid, Scheepers, Hubertina C. J., Spaanderman, Marc E. A., Bloemenkamp, Kitty W M, Haak, Monique C., Bolte, Antoinette C., Vandenbussche, Frank P. H. A., Woiski, Mallory D, Bax, Caroline J., Cornette, Jérôme M J, Duvekot, Johannes J., Bijvank, Bas W A N I J, van Eyck, Jim, Franssen, Maureen T. M., Sollie, Krystyna M., van der Post, Joris A. M., Bossuyt, Patrick M. M., Kok, Marjolein, Mol, Ben Willem J., and van Baaren, Gert-Jan

Published
2017

21. Hypothesis acardiac twin pregnancies : Pathophysiology-based hypotheses suggest risk prediction by pump/acardiac umbilical venous diameter ratios

Author

van Gemert, Martin J C, Pistorius, Lourens R., Benirschke, Kurt, Bonsel, Gouke J., Vandenbussche, Frank P H A, Paarlberg, K. Marieke, van den Wijngaard, Jeroen P H M, Nikkels, Peter G J, Biomedical Engineering and Physics, and Other departments

Subjects
Embryology, Umbilical venous diameter ratio (UVD-ratio), Acardiac twin pregnancy, Journal Article, Pediatrics, Perinatology, and Child Health, Pathophysiology, Risk prediction of pump twin, Serial UVD-ratio measurement, Twin reversed-arterial perfusion sequence, Developmental Biology
Abstract

BACKGROUND: A total of 75% of monozygotic twins share 1 monochorionic placenta where placental anastomoses cause several serious complications, for example, acardiac twinning. Acardiac twins lack cardiac function but grow by perfusion of arterial blood from the pump twin. This rare pregnancy has 50% natural pump twin mortality but accurate risk prediction is currently impossible. Recent guidelines suggest prophylactic surgery before 18 weeks, suggesting 50% unnecessary interventions. We hypothesize that (1) adverse pump twin outcome relates to easy-to-measure pump/acardiac umbilical venous diameter (UVD) ratios, representing acardiac perfusion by the pump's excess cardiac output. This hypothesis suggests that (2) UVD-ratios are large, mildly varying in cases without complications but small and decreasing when complications develop, thus predicting that (3) UVD-ratios may allow risk prediction of pump twins. In this exploratory clinical pilot, we tested whether UVD-ratio measurements support these predictions. METHODS: We included 7 uncomplicated (expectant management), 3 elective surgical, and 17 complicated cases (pump decompensation, emergency intervention/delivery or demise). Nine UVD-ratios were measured sonographycally and 18 by pathology. RESULTS: Uncomplicated cases have larger, two serial measurements showing mildly varying UVD-ratios; elective surgical cases show larger UVD-ratios; complicated cases have smaller, two serial measurements showing decreasing UVD-ratios. There were no false-positives, no false-negatives and noncrossing linear trendlines of uncomplicated and complicated cohorts. CONCLUSION: Our data provide first evidence that UVD-ratios allow risk prediction of pump twins. More early uncomplicated and late complicated cases are needed, for example, in a prospective trial, before the separation between uncomplicated and complicated cohorts is accurate enough to support a well-founded decision on (early) intervention.

Published
2016

22. Acardiac twinning: High resolution three-dimensional reconstruction of a low resistance case

Author

van Lier, Monique G J T B, Lopriore, Enrico, Vandenbussche, Frank P H A, Streekstra, Geert J., Siebes, Maria, Nikkels, Peter G J, Oepkes, Dick, van Gemert, Martin J C, van den Wijngaard, Jeroen P H M, Graduate School, Amsterdam Cardiovascular Sciences, Amsterdam Movement Sciences, Biomedical Engineering and Physics, and Radiology and Nuclear Medicine

Subjects
Circulation, Cryomicrotome, Embryology, Journal Article, 3D reconstruction, Pediatrics, Perinatology, and Child Health, Case Reports, Acardiac twin, Hypoxia, TRAP sequence, Developmental Biology
Abstract

Background: Acardiac twinning is a rare anomaly of monochorionic twin pregnancies. Acardiac fetuses lack a functional heart but are passively perfused by arterial blood from their pump co-twin. Although four acardiac morphological types have been classified, the various paths of anatomical and circulatory acardiac twin development, and the potential influence of acardiac size and perfusion flow as possible predictors of pump twin morbidity and mortality are poorly understood. This report presents the first high resolution three-dimensional reconstruction of the vasculature of an acardiac twin by cryomicrotome imaging. Case: A small, approximately 7.5-cm-diameter ball-shaped acardius amorphous of 30 5/7 weeks had caused pump twin cardiac decompensation that necessitated an emergency cesarian section. The pump twin survived well. The acardiac body had a partially intact vascular system with large diameter arteries and veins and multiple zones that appeared devoid of perfusion. The three-dimensional reconstruction showed neither recognizable organ structures nor identifiable blood vessels except for the umbilical artery and vein. Conclusion: Our case showed a small acardiac mass with large diameter vessels and consequential low outflow resistance that caused pump twin complications. This indicates that the development of a method that allows pump twin prognosis is likely more successful if based on the use of acardiac versus pump twin perfusion flows than on body volume ratios.

Published
2016

23. Twin reversed arterial perfusion sequence is more common than generally accepted

Author

van Gemert, Martin J. C., van den Wijngaard, Jeroen P. H. M., Vandenbussche, Frank P. H. A., and Biomedical Engineering and Physics

Abstract

Approximately 75% of monozygotic twin pregnancies share one monochorionic placenta where placental anastomoses are virtually always present to connect the two fetoplacental circulations. These anastomoses cause several serious complications such as acardiac twinning. Acardiac twins lack a functional heart but nevertheless show fetal growth because the normal pump twin perfuses the acardiac body through arterioarterial (AA) and venovenous (VV) anastomoses. The widely accepted 1% monochorionic acardiac incidence dates back to 1944 and the associated 1:35,000 pregnancies to 1953. Our aim was to update this analysis. We accepted the 1% (actually 1.1%) monochorionic acardiac incidence due to lack of more precise data, included the recently observed 58% early cessation of acardiac development as well as consequences of assisted reproductive technology, and assessed the incidence of acardiac twinning under conditions of AA-VV anastomoses. Early acardiac monochorionic twinning increased from 1.1% to 1.1/(1-0.58) = 2.6%, from 1:35,000 to 1:9,500 to 11,000 pregnancies, depending on number and method of assisted reproductive technology, and occurs in approximately 1:8 AA-VV anastomoses-containing monochorionic placentas. Early acardiac twinning is not a rare event. The 1944-based 1% acardiac monochorionic incidence has a weak basis and could therefore be (much) larger. Knowing this incidence more precisely may contribute to our knowledge of embryonic splitting in unequal cell masses

Published
2015

24. The impact of fetal gender and ethnicity on the risk of spontaneous preterm delivery in women with symptoms of preterm labor

Author

Wilms, Femke F, Vis, Jolande Y, Oudijk, Martijn A, Kwee, Anneke, Porath, Martina M, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Bolte, Antoinette C, Bax, Caroline J, Cornette, Jérôme M J, Duvekot, Johannes J, Nij Bijvanck, Bas W A, Eijck, Jim van, Franssen, Maureen T M, Sollie, Krystyna M, Vandenbussche, Frank P H A, Woiski, Mallory D, van der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C, Mol, Ben W J, van Baaren, Gert-Jan, Wilms, Femke F, Vis, Jolande Y, Oudijk, Martijn A, Kwee, Anneke, Porath, Martina M, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Bolte, Antoinette C, Bax, Caroline J, Cornette, Jérôme M J, Duvekot, Johannes J, Nij Bijvanck, Bas W A, Eijck, Jim van, Franssen, Maureen T M, Sollie, Krystyna M, Vandenbussche, Frank P H A, Woiski, Mallory D, van der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C, Mol, Ben W J, and van Baaren, Gert-Jan

Published
2016

25. Comparison of the Actim Partus test and the fetal fibronectin test in the prediction of spontaneous preterm birth in symptomatic women undergoing cervical length measurement

Author

Bruijn, Merel M C, Vis, Jolande Y., Wilms, Femke F., Oudijk, Martijn A., Kwee, Anneke, Porath, Martina M., Oei, Guid, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Haak, Monique C., Bolte, Antoinette C., Vandenbussche, Frank P H A, Woiski, Mallory D., Bax, Caroline J., Cornette, Jérôme M J, Duvekot, Johannes J., Nij Bijvank, Bas W A, van Eyck, Jim, Franssen, Maureen T M, Sollie, Krystyna M., van der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C., Kok, M., Mol, Ben W J, van Baaren, Gert Jan, Bruijn, Merel M C, Vis, Jolande Y., Wilms, Femke F., Oudijk, Martijn A., Kwee, Anneke, Porath, Martina M., Oei, Guid, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Haak, Monique C., Bolte, Antoinette C., Vandenbussche, Frank P H A, Woiski, Mallory D., Bax, Caroline J., Cornette, Jérôme M J, Duvekot, Johannes J., Nij Bijvank, Bas W A, van Eyck, Jim, Franssen, Maureen T M, Sollie, Krystyna M., van der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C., Kok, M., Mol, Ben W J, and van Baaren, Gert Jan

Published
2016

26. The impact of fetal gender and ethnicity on the risk of spontaneous preterm delivery in women with symptoms of preterm labor

Author

CDL Klinisch Chemici in opleiding, Circulatory Health, Other research (not in main researchprogram), MS Verloskunde, Geboortecentrum voorzitterschap, Wilms, Femke F, Vis, Jolande Y, Oudijk, Martijn A, Kwee, Anneke, Porath, Martina M, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Bolte, Antoinette C, Bax, Caroline J, Cornette, Jérôme M J, Duvekot, Johannes J, Nij Bijvanck, Bas W A, Eijck, Jim van, Franssen, Maureen T M, Sollie, Krystyna M, Vandenbussche, Frank P H A, Woiski, Mallory D, van der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C, Mol, Ben W J, van Baaren, Gert-Jan, CDL Klinisch Chemici in opleiding, Circulatory Health, Other research (not in main researchprogram), MS Verloskunde, Geboortecentrum voorzitterschap, Wilms, Femke F, Vis, Jolande Y, Oudijk, Martijn A, Kwee, Anneke, Porath, Martina M, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Bolte, Antoinette C, Bax, Caroline J, Cornette, Jérôme M J, Duvekot, Johannes J, Nij Bijvanck, Bas W A, Eijck, Jim van, Franssen, Maureen T M, Sollie, Krystyna M, Vandenbussche, Frank P H A, Woiski, Mallory D, van der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C, Mol, Ben W J, and van Baaren, Gert-Jan

Published
2016

27. Comparison of the Actim Partus test and the fetal fibronectin test in the prediction of spontaneous preterm birth in symptomatic women undergoing cervical length measurement

Author

CDL Patiëntenzorg KC, UMC Utrecht, Circulatory Health, MS Verloskunde, Other research (not in main researchprogram), Geboortecentrum voorzitterschap, Bruijn, Merel M C, Vis, Jolande Y., Wilms, Femke F., Oudijk, Martijn A., Kwee, Anneke, Porath, Martina M., Oei, Guid, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Haak, Monique C., Bolte, Antoinette C., Vandenbussche, Frank P H A, Woiski, Mallory D., Bax, Caroline J., Cornette, Jérôme M J, Duvekot, Johannes J., Nij Bijvank, Bas W A, van Eyck, Jim, Franssen, Maureen T M, Sollie, Krystyna M., van der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C., Kok, M., Mol, Ben W J, van Baaren, Gert Jan, CDL Patiëntenzorg KC, UMC Utrecht, Circulatory Health, MS Verloskunde, Other research (not in main researchprogram), Geboortecentrum voorzitterschap, Bruijn, Merel M C, Vis, Jolande Y., Wilms, Femke F., Oudijk, Martijn A., Kwee, Anneke, Porath, Martina M., Oei, Guid, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Haak, Monique C., Bolte, Antoinette C., Vandenbussche, Frank P H A, Woiski, Mallory D., Bax, Caroline J., Cornette, Jérôme M J, Duvekot, Johannes J., Nij Bijvank, Bas W A, van Eyck, Jim, Franssen, Maureen T M, Sollie, Krystyna M., van der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C., Kok, M., Mol, Ben W J, and van Baaren, Gert Jan

Published
2016

28. Acardiac twinning: High resolution three-dimensional reconstruction of a low resistance case

Author

Pathologie Pathologen staf, Cancer, van Lier, Monique G J T B, Lopriore, Enrico, Vandenbussche, Frank P H A, Streekstra, Geert J., Siebes, Maria, Nikkels, Peter G J, Oepkes, Dick, van Gemert, Martin J C, van den Wijngaard, Jeroen P H M, Pathologie Pathologen staf, Cancer, van Lier, Monique G J T B, Lopriore, Enrico, Vandenbussche, Frank P H A, Streekstra, Geert J., Siebes, Maria, Nikkels, Peter G J, Oepkes, Dick, van Gemert, Martin J C, and van den Wijngaard, Jeroen P H M

Published
2016

29. Hypothesis acardiac twin pregnancies: Pathophysiology-based hypotheses suggest risk prediction by pump/acardiac umbilical venous diameter ratios

Author

MS Verloskunde, Geboortecentrum voorzitterschap, Pathologie patiënten zorg, Cancer, van Gemert, Martin J C, Pistorius, Lourens R., Benirschke, Kurt, Bonsel, Gouke J., Vandenbussche, Frank P H A, Paarlberg, K. Marieke, van den Wijngaard, Jeroen P H M, Nikkels, Peter G J, MS Verloskunde, Geboortecentrum voorzitterschap, Pathologie patiënten zorg, Cancer, van Gemert, Martin J C, Pistorius, Lourens R., Benirschke, Kurt, Bonsel, Gouke J., Vandenbussche, Frank P H A, Paarlberg, K. Marieke, van den Wijngaard, Jeroen P H M, and Nikkels, Peter G J

Published
2016

31. Risk factors for preterm delivery : do they add to fetal fibronectin testing and cervical length measurement in the prediction of preterm delivery in symptomatic women?

Author

van Baaren, Gert-Jan, Bruijn, Merel M C, Vis, Jolande Y, Wilms, Femke F, Oudijk, Martijn A, Kwee, Anneke, Porath, Martina M, Oei, Guid, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Haak, Monique C, Bolte, Antoinette C, Bax, Caroline J, Cornette, Jérôme M J, Duvekot, Johannes J, Nij Bijvanck, Bas W A, van Eijck, Jim, Franssen, Maureen T M, Sollie, Krystyna M, Vandenbussche, Frank P H A, Woiski, Mallory, Bossuyt, Patrick M M, Opmeer, Brent C, Mol, Ben W J, van Baaren, Gert-Jan, Bruijn, Merel M C, Vis, Jolande Y, Wilms, Femke F, Oudijk, Martijn A, Kwee, Anneke, Porath, Martina M, Oei, Guid, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Haak, Monique C, Bolte, Antoinette C, Bax, Caroline J, Cornette, Jérôme M J, Duvekot, Johannes J, Nij Bijvanck, Bas W A, van Eijck, Jim, Franssen, Maureen T M, Sollie, Krystyna M, Vandenbussche, Frank P H A, Woiski, Mallory, Bossuyt, Patrick M M, Opmeer, Brent C, and Mol, Ben W J

Published
2015

32. Risk stratification with cervical length and fetal fibronectin in women with threatened preterm labor before 34 weeks and not delivering within 7 days

Author

Hermans, Frederik J R, Bruijn, Merel M C, Vis, Jolande Y, Wilms, Femke F, Oudijk, Martijn A, Porath, Martina M, Scheepers, Hubertina C J, Bloemenkamp, Kitty W M, Bax, Caroline J, Cornette, Jérôme M J, Nij Bijvanck, Bas W A, Franssen, Maureen T M, Vandenbussche, Frank P H A, Kok, Marjolein, Grobman, William A, Van Der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C, Mol, Ben Willem J, Schuit, Ewoud, Van Baaren, Gert-Jan, Hermans, Frederik J R, Bruijn, Merel M C, Vis, Jolande Y, Wilms, Femke F, Oudijk, Martijn A, Porath, Martina M, Scheepers, Hubertina C J, Bloemenkamp, Kitty W M, Bax, Caroline J, Cornette, Jérôme M J, Nij Bijvanck, Bas W A, Franssen, Maureen T M, Vandenbussche, Frank P H A, Kok, Marjolein, Grobman, William A, Van Der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C, Mol, Ben Willem J, Schuit, Ewoud, and Van Baaren, Gert-Jan

Published
2015

33. Prescribing patterns of antenatal corticosteroids in women with threatened preterm labor

Author

Wilms, Femke F, van Baaren, Gert-Jan, Vis, Jolande Y, Oudijk, Martijn A, Kwee, Anneke, Porath, Martina M, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Bolte, Antoinette C, Bax, Caroline J, Cornette, Jérôme M J, Duvekot, Johannes J, Nij Bijvank, Bas W A, van Eyck, Jim, Franssen, Maureen T M, Sollie, Krystyna M, Vandenbussche, Frank P H A, Woiski, Mallory D, van der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C, Mol, Ben W J, Wilms, Femke F, van Baaren, Gert-Jan, Vis, Jolande Y, Oudijk, Martijn A, Kwee, Anneke, Porath, Martina M, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Bolte, Antoinette C, Bax, Caroline J, Cornette, Jérôme M J, Duvekot, Johannes J, Nij Bijvank, Bas W A, van Eyck, Jim, Franssen, Maureen T M, Sollie, Krystyna M, Vandenbussche, Frank P H A, Woiski, Mallory D, van der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C, and Mol, Ben W J

Published
2015

34. Risk factors for preterm delivery: do they add to fetal fibronectin testing and cervical length measurement in the prediction of preterm delivery in symptomatic women?

Author

CDL Klinisch Chemici in opleiding, Circulatory Health, Other research (not in main researchprogram), MS Verloskunde, van Baaren, Gert-Jan, Bruijn, Merel M C, Vis, Jolande Y, Wilms, Femke F, Oudijk, Martijn A, Kwee, Anneke, Porath, Martina M, Oei, Guid, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Haak, Monique C, Bolte, Antoinette C, Bax, Caroline J, Cornette, Jérôme M J, Duvekot, Johannes J, Nij Bijvanck, Bas W A, van Eijck, Jim, Franssen, Maureen T M, Sollie, Krystyna M, Vandenbussche, Frank P H A, Woiski, Mallory, Bossuyt, Patrick M M, Opmeer, Brent C, Mol, Ben W J, CDL Klinisch Chemici in opleiding, Circulatory Health, Other research (not in main researchprogram), MS Verloskunde, van Baaren, Gert-Jan, Bruijn, Merel M C, Vis, Jolande Y, Wilms, Femke F, Oudijk, Martijn A, Kwee, Anneke, Porath, Martina M, Oei, Guid, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Haak, Monique C, Bolte, Antoinette C, Bax, Caroline J, Cornette, Jérôme M J, Duvekot, Johannes J, Nij Bijvanck, Bas W A, van Eijck, Jim, Franssen, Maureen T M, Sollie, Krystyna M, Vandenbussche, Frank P H A, Woiski, Mallory, Bossuyt, Patrick M M, Opmeer, Brent C, and Mol, Ben W J

Published
2015

35. Prescribing patterns of antenatal corticosteroids in women with threatened preterm labor

Author

CDL Klinisch Chemici in opleiding, Circulatory Health, Other research (not in main researchprogram), MS Verloskunde, Wilms, Femke F, van Baaren, Gert-Jan, Vis, Jolande Y, Oudijk, Martijn A, Kwee, Anneke, Porath, Martina M, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Bolte, Antoinette C, Bax, Caroline J, Cornette, Jérôme M J, Duvekot, Johannes J, Nij Bijvank, Bas W A, van Eyck, Jim, Franssen, Maureen T M, Sollie, Krystyna M, Vandenbussche, Frank P H A, Woiski, Mallory D, van der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C, Mol, Ben W J, CDL Klinisch Chemici in opleiding, Circulatory Health, Other research (not in main researchprogram), MS Verloskunde, Wilms, Femke F, van Baaren, Gert-Jan, Vis, Jolande Y, Oudijk, Martijn A, Kwee, Anneke, Porath, Martina M, Scheepers, Hubertina C J, Spaanderman, Marc E A, Bloemenkamp, Kitty W M, Bolte, Antoinette C, Bax, Caroline J, Cornette, Jérôme M J, Duvekot, Johannes J, Nij Bijvank, Bas W A, van Eyck, Jim, Franssen, Maureen T M, Sollie, Krystyna M, Vandenbussche, Frank P H A, Woiski, Mallory D, van der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C, and Mol, Ben W J

Published
2015

36. Risk stratification with cervical length and fetal fibronectin in women with threatened preterm labor before 34 weeks and not delivering within 7 days

Author

CDL Klinisch Chemici in opleiding, Circulatory Health, Other research (not in main researchprogram), MS Verloskunde, Epi Methoden Team 1, Hermans, Frederik J R, Bruijn, Merel M C, Vis, Jolande Y, Wilms, Femke F, Oudijk, Martijn A, Porath, Martina M, Scheepers, Hubertina C J, Bloemenkamp, Kitty W M, Bax, Caroline J, Cornette, Jérôme M J, Nij Bijvanck, Bas W A, Franssen, Maureen T M, Vandenbussche, Frank P H A, Kok, Marjolein, Grobman, William A, Van Der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C, Mol, Ben Willem J, Schuit, Ewoud, Van Baaren, Gert-Jan, CDL Klinisch Chemici in opleiding, Circulatory Health, Other research (not in main researchprogram), MS Verloskunde, Epi Methoden Team 1, Hermans, Frederik J R, Bruijn, Merel M C, Vis, Jolande Y, Wilms, Femke F, Oudijk, Martijn A, Porath, Martina M, Scheepers, Hubertina C J, Bloemenkamp, Kitty W M, Bax, Caroline J, Cornette, Jérôme M J, Nij Bijvanck, Bas W A, Franssen, Maureen T M, Vandenbussche, Frank P H A, Kok, Marjolein, Grobman, William A, Van Der Post, Joris A M, Bossuyt, Patrick M M, Opmeer, Brent C, Mol, Ben Willem J, Schuit, Ewoud, and Van Baaren, Gert-Jan

Published
2015

37. Which Factors Contribute to False-Positive, False-Negative, and Invalid Results in Fetal Fibronectin Testing in Women with Symptoms of Preterm Labor?

Author

Bruijn, Merel M. C., Hermans, Frederik J. R., Vis, Jolande Y., Wilms, Femke F., Oudijk, Martijn A., Kwee, Anneke, Porath, Martina M., Oei, Guid, Scheepers, Hubertina C. J., Spaanderman, Marc E. A., Bloemenkamp, Kitty W. M., Haak, Monique C., Bolte, Antoinette C., Vandenbussche, Frank P. H. A., Woiski, Mallory D., Bax, Caroline J., Cornette, Jérôme M. J., Duvekot, Johannes J., Bijvank, Bas W. A. N. I. J., and van Eyck, Jim

Subjects
RISK factors in premature labor, CONFIDENCE intervals, DIAGNOSTIC errors, ENDOSCOPIC ultrasonography, FIBRONECTINS, GESTATIONAL age, PREMATURE labor, SEXUAL intercourse, SOAP, UTERINE hemorrhage, VAGINA, LOGISTIC regression analysis, MULTIPLE regression analysis, DESCRIPTIVE statistics, ODDS ratio, SYMPTOMS, PREGNANCY
Abstract

Objective We assessed the influence of external factors on false-positive, false-negative, and invalid fibronectin results in the prediction of spontaneous delivery within 7 days. Methods We studied symptomatic women between 24 and 34 weeks' gestational age. We performed uni- and multivariable logistic regression to estimate the effect of external factors (vaginal soap, digital examination, transvaginal sonography, sexual intercourse, vaginal bleeding) on the risk of false-positive, false-negative, and invalid results, using spontaneous delivery within 7 days as the outcome. Results Out of 708 women, 237 (33%) had a false-positive result; none of the factors showed a significant association. Vaginal bleeding increased the proportion of positive fetal fibronectin (fFN) results, but was significantly associated with a lower risk of false-positive test results (odds ratio [OR], 0.22; 95% confidence intervals [CI], 0.12-0.39). Ten women (1%) had a false-negative result. None of the investigated factors was significantly associated with a significantly higher risk of false-negative results. Twenty-one tests (3%) were invalid; only vaginal bleeding showed a significant association (OR, 4.5; 95% CI, 1.7-12). Conclusion The effect of external factors on the performance of qualitative fFN testing is limited, with vaginal bleeding as the only factor that reduces its validity. [ABSTRACT FROM AUTHOR]

Published
2017
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38. The impact of fetal gender and ethnicity on the risk of spontaneous preterm delivery in women with symptoms of preterm labor.

Author

Wilms, Femke F., Vis, Jolande Y., Oudijk, Martijn A., Kwee, Anneke, Porath, Martina M., Scheepers, Hubertina C. J., Spaanderman, Marc E. A., Bloemenkamp, Kitty W. M., Bolte, Antoinette C., Bax, Caroline J., Cornette, Jérôme M. J., Duvekot, Johannes J., Nij Bijvanck, Bas W. A., Eijck, Jim van, Franssen, Maureen T. M., Sollie, Krystyna M., Vandenbussche, Frank P. H. A., Woiski, Mallory D., van der Post, Joris A. M., and Bossuyt, Patrick M. M.

Subjects
PREMATURE labor, ETHNICITY, MISCARRIAGE, COHORT analysis, GENDER, GESTATIONAL age, CHI-squared test, DEMOGRAPHY, FETAL ultrasonic imaging, FIBRONECTINS, PREMATURE infants, LONGITUDINAL method, SEX distribution, WHITE people, FETAL development, RELATIVE medical risk
Abstract

Objective: The objective of this study is to evaluate the relation among fetal gender, ethnicity, and preterm labor (PTL) and preterm delivery (PTD).Methods: A secondary analysis was performed of a prospective cohort study including women with symptoms of PTL between 24 and 34 weeks. The proportion of women carrying a male or female fetus at the onset of PTL was calculated. Gestational age at delivery and risk of PTD of both fetal genders was compared and interaction of fetal gender and maternal ethnicity on the risk of PTD was evaluated.Results: Of the 594 included women, 327 (55%) carried a male fetus. Median gestational age at delivery in women pregnant with a male fetus was 37 5/7 (IQR 34 4/7-39 1/7) weeks compared with 38 1/7 (IQR 36 0/7-39 5/7) weeks in women pregnant with a female fetus (p = 0.032). The risk of PTD did not differ significantly. In Caucasians, we did find an increased risk of PTD before 37 weeks in women pregnant with a male fetus (OR 1.9 (95% CI 1.2-3.0)).Conclusions: The majority of women with PTL are pregnant with a male fetus and these women deliver slightly earlier. Race seems to affect this disparity. [ABSTRACT FROM AUTHOR]

Published
2016
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47. Selective Feticide in Monoamniotic Twin Pregnancies by Umbilical Cord Occlusion and Transection.

Author

Middeldorp, Johanna M., Klumper, Frans J. C. M., Oepkes, Dick, Lopriore, Enrico, Kanhai, Humphrey H. H., and Vandenbussche, Frank P. H. A.

Subjects
ABORTION, PREGNANCY, FETOSCOPY, ENDOSCOPY, HEART block
Abstract

Objectives: In monoamniotic twin pregnancies discordant for fetal anomaly, parents may opt for selective feticide. However, the normal co-twin remains at risk of sudden demise from cord entanglement. We report on three cases of successful selective feticide by cord occlusion combined with cord transection. Methods: We describe technical details and outcome of three monoamniotic twin pregnancies discordant for fetal anomaly (two cases of anencephaly and one case of congenital heart block) in which cord occlusion was followed by transection of the cord using contact laser. Results: The fetoscopic cord occlusion and transection using laser was successfully performed at 15, 16 and 19 weeks gestation, respectively. In one case, amniotic fluid leakage occurred after fetoscopy. The surviving co-twins were born at 36, 38 and 36 weeks gestation, respectively; two of the three were born vaginally and they were all healthy. Conclusion: In monoamniotic twins, selective feticide using laser occlusion and transection of the umbilical cord is technically feasible and can lead to near-term vaginal birth of healthy co-twins. Copyright © 2007 S. Karger AG, Basel [ABSTRACT FROM AUTHOR]

Published
2008
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48. Progesterone for the prevention of preterm birth in women with multiple pregnancies: the AMPHIA trial.

Author

Lim, Arianne C., Bloemenkamp, Kitty W. M., Boer, Kees, Duvekot, Johannes J., Erwich, Jan Jaap H. M., Hasaart, Tom H. M., Hummel, Pieter, Mol, Ben W. J., Offermans, Jos P. M., van Oirschot, Charlotte M., Santema, Job G., Scheepers, Hubertina C. J., Schöls, Willem A., Vandenbussche, Frank P. H. A., Wouters, Maurice G. A. J., and Bruinse, Hein W.

Subjects
PROGESTERONE, PREMATURE labor, NEONATAL death, PREGNANCY, GESTATIONAL age
Abstract

Background: 15% of multiple pregnancies ends in a preterm delivery, which can lead to mortality and severe long term neonatal morbidity. At present, no generally accepted strategy for the prevention of preterm birth in multiple pregnancies exists. Prophylactic administration of 17-alpha hydroxyprogesterone caproate (17OHPC) has proven to be effective in the prevention of preterm birth in women with singleton pregnancies with a previous preterm delivery. At present, there are no data on the effectiveness of progesterone in the prevention of preterm birth in multiple pregnancies. Methods/Design: We aim to investigate the hypothesis that 17OHPC will reduce the incidence of the composite neonatal morbidity of neonates by reducing the early preterm birth rate in multiple pregnancies. Women with a multiple pregnancy at a gestational age between 15 and 20 weeks of gestation will be entered in a placebo-controlled, double blinded randomised study comparing weekly 250 mg 17OHPC intramuscular injections from 16-20 weeks up to 36 weeks of gestation versus placebo. At study entry, cervical length will be measured. The primary outcome is composite bad neonatal condition (perinatal death or severe morbidity). Secondary outcome measures are time to delivery, preterm birth rate before 32 and 37 weeks, days of admission in neonatal intensive care unit, maternal morbidity, maternal admission days for preterm labour and costs. We need to include 660 women to indicate a reduction in bad neonatal outcome from 15% to 8%. Analysis will be by intention to treat. We will also analyse whether the treatment effect is dependent on cervical length. Discussion: This trial will provide evidence as to whether or not 17OHPC-treatment is an effective means of preventing bad neonatal outcome due to preterm birth in multiple pregnancies. [ABSTRACT FROM AUTHOR]

Published
2007
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