Publications by authors named "Johannes Duvekot"

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection in the placenta can lead to fetal distress and demise, characterized by severe trophoblast necrosis, chronic histiocytic intervillositis (CHI), and massive perivillous fibrin deposition. We aimed to uncover spatial immune-related protein changes in SARS-CoV-2 placentitis compared with CHI placentas and uncomplicated pregnancies to gain insight into the underlying pathophysiological mechanisms. Placentas were retrospectively collected from cases with SARS-CoV-2 placentitis resulting in fetal distress/demise (n = 9), CHI (n = 9), and uncomplicated term controls (n = 9).

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Limited data are available on VWF activity (VWF:Act) and factor VIII (FVIII:C) levels during delivery after VWF/FVIII concentrate administration in women with von Willebrand disease (VWD). We aimed to evaluate treatment with a specific VWF/FVIII concentrate on factor levels in women with VWD during delivery and the postpartum period. A retrospective single-center study was conducted between January 1, 2008, and August 1, 2022.

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Background: Early-onset fetal growth restriction as consequence of placental insufficiency frequently requires iatrogenic preterm birth. Administration of antenatal corticosteroids reduces risks of neonatal morbidity and mortality following preterm birth and is most beneficial if the neonate is delivered within 2 weeks following treatment. International guidelines on fetal growth restriction pregnancies do not provide directives regarding the timing of antenatal corticosteroids, resulting in practice variation.

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Purpose: The FUPEC (Follow-Up Pre-EClampsia) study aims to investigate the presence and development of cardiovascular risk factors, cardiovascular disease, as well as cardiovascular health following a pregnancy complicated by severe pre-eclampsia.

Participants: The FUPEC study is an open-cohort study conducted within routine care at the FUPEC clinic at Erasmus Medical Center in the Netherlands. This clinic is specifically designed for the cardiovascular follow-up of patients who have experienced severe pre-eclampsia.

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Background: Improved Pregnancy Outcomes via Early Detection (IMPROvED) is a multi-centre, European phase IIa clinical study. The primary aim of IMPROvED is to enable the assessment and refinement of innovative prototype preeclampsia risk assessment tests based on emerging biomarker technologies. Here we describe IMPROvED's profile and invite researchers to collaborate.

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Objective: The optimal management of placenta accreta spectrum (PAS) requires the participation of multidisciplinary teams that are often not locally available in low-resource settings. Telehealth has been increasingly used to manage complex obstetric conditions. Few studies have explored the use of telehealth for PAS management, and we aimed evaluate the usage of telehealth in the management of PAS patients in low-resource settings.

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Objective: The aim of this study was to explore how obstetricians-gynecologists in low- and middle-income countries (LMICs) can apply current international clinical practice guidelines (CPGs) for the management of placenta accreta spectrum (PAS) in limited resource settings.

Methods: This was an observational, survey-based study. Clinicians with expertise in managing patients with PAS in LMICs were contacted for their evaluation of the recommendations included in four PAS clinical practice guidelines.

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Introduction: The clinical management of placenta accreta spectrum (PAS) depends on placental topography and vascular involvement. Our aim was to determine whether transabdominal and transvaginal ultrasound signs can predict PAS management.

Material And Methods: We conducted a retrospective cohort study of consecutive prenatally suspected PAS cases in a single tertiary-care PAS center between January 2021 and July 2022.

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Objective: To quantify the association between prophylactic radiologic interventions and perioperative blood loss in women with risk factors for placenta accreta spectrum disorder (PAS).

Methods: We conducted a retrospective nationwide cohort study of women with risk factors for placenta accreta spectrum disorder who underwent planned cesarean section in 69 Dutch hospitals between 2008 and 2013. All women had two risk factors for PAS: placenta previa/anterior low-lying placenta and a history of cesarean section(s).

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Introduction: Previous evidence examining the association between socioeconomic status and pregnancy complications are conflicted and often limited to using area-based measures of socioeconomic status. In this study, we aimed to examine the association between individual-level socioeconomic factors and a wide range of adverse pregnancy and neonatal outcomes using data from the IMPROvED birth cohort conducted in Sweden, the Netherlands and Republic of Ireland.

Material And Methods: The study cohort consisted of women who participated in the IMPROvED birth cohort between 2013 and 2017.

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Background: On a global scale, cases of placenta accreta spectrum are often just identified during cesarean delivery because they are missed during antenatal care screening. Routine operating teams not trained in the management of placenta accreta spectrum are faced with difficult surgical situations and have to make decisions that may define the clinical outcomes. Although there are general recommendations for the intraoperative management of placenta accreta spectrum, no studies have described the clinical reality of unexpected placenta accreta spectrum cases in resource-poor settings.

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Introduction: Early-onset fetal growth restriction (FGR) requires timely, often preterm, delivery to prevent fetal hypoxia causing stillbirth or neurologic impairment. Antenatal corticosteroids (CCS) administration reduces neonatal morbidity and mortality following preterm birth, most effectively when administered within 1 week preceding delivery. Optimal timing of CCS administration is challenging in early-onset FGR, as the exact onset and course of fetal hypoxia are unpredictable.

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Background: Women with prior severe preeclampsia are at an increased risk for cardiovascular diseases later in life compared to women who had a normotensive pregnancy. The objective of this study was to assess their needs and preferences regarding app-based cardiovascular health promotion.

Methods: Patients (n = 35) of the Follow-Up PreEClampsia Outpatient Clinic (FUPEC), Erasmus MC, the Netherlands, participated in an anonymous online survey.

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Article Synopsis
  • * This study investigates the relationship between chemotherapy duration, the timing of chemotherapy initiation, and fetal growth, while also considering other maternal characteristics and cancer types.
  • * The research analyzes fetal growth outcomes using distinct categories such as fetal growth restriction (FGR) and non-FGR, utilizing ultrasound data and statistical models to assess the effects of treatment on fetal development.
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A multiparous pregnant patient was admitted to the intensive care unit in her third trimester of pregnancy for prone positioning mechanical ventilation after developing SARS-CoV2 (COVID-19)-related acute respiratory distress syndrome. Repositioning in left lateral tilt was followed by uterine contractions and cardiotocography alterations. Preterm caesarean section was performed based on persistent foetal tachycardia and suspected foetal distress, followed by a per-operative diagnosis of uterine levotorsion.

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Article Synopsis
  • * In a sample of 830 women, two-thirds achieved target blood pressure levels within one hour, and 77.4% had successful treatment within two hours without significant adverse effects.
  • * The findings suggest that nicardipine is a promising option for managing severe antepartum hypertension, with a high success rate and an acceptable safety profile, indicating its potential for clinical use.
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Introduction: Coagulopathy may be the result of hyperfibrinolysis and could exacerbate bleeding following childbirth. Timely recognition of hyperfibrinolysis during the earliest stages of postpartum hemorrhage could identify women at risk of more severe blood loss who may benefit from targeted anti-fibrinolytic therapy. Rotational thromboelastometry (ROTEM ) is a point-of-care test that could detect hyperfibrinolysis.

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Background: To evaluate the indications for admission and mortality rates of women of reproductive age admitted to a tertiary Intensive Care Unit (ICU) and to compare the outcomes of obstetric and non-obstetric admissions.

Methods: A retrospective cohort study was performed, including all women aged 17-41 years admitted to a level 3 ICU in the Netherlands, between January 1, 2000 and January 1, 2016. Primary outcome was indication for admission and mortality.

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Introduction: To evaluate rotational fibrin-based thromboelastometry (ROTEM FIBTEM) with amplitude of clot firmness at 5 min (A5) as an early point-of-care parameter for predicting progression to severe postpartum hemorrhage, and compare its predictive value with that of fibrinogen.

Material And Methods: Prospective cohort study in the Netherlands including women with 800-1500 ml of blood loss within 24 h following birth. Blood loss was quantitatively measured by weighing blood-soaked items and using a fluid collector bag in the operating room.

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Introduction: Early-onset fetal growth restriction is a pregnancy complication often coinciding with abnormal Doppler flow in the umbilical artery. Absent or reversed end-diastolic flow in the umbilical artery is associated with adverse perinatal outcome. As the optimal management of this condition is unclear, the objective of this study was to analyze the time interval from admission to delivery of pregnancies with early-onset fetal growth restriction, while pursuing a policy of postponing delivery unless active management of labor would be required because of fetal distress or maternal condition.

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