Publications by authors named "Inge Van Kamp"

Background And Objectives: To evaluate the severity of haemolytic disease of the foetus and newborn (HDFN) in subsequent pregnancies with RhD immunization and to identify predictive factors for severe disease.

Materials And Methods: Nationwide prospective cohort study, including all pregnant women with RhD antibodies. All women with at least two pregnancies with RhD antibodies and RhD-positive foetuses were selected.

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Introduction: Lithium use during pregnancy reduces the risk of mood episodes in the perinatal period for women with bipolar disorder. Some previous studies found deleterious effects of intrauterine lithium exposure on birth outcomes, yet little is known about a dose response relationship. The current study investigated the influence of maternal lithium serum levels on birth outcomes.

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Objective: Lithium is often continued during pregnancy to reduce the risk of perinatal mood episodes for women with bipolar disorder. However, little is known about the effect of intrauterine lithium exposure on brain development. The aim of this study was to investigate brain structure in children after intrauterine exposure to lithium.

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Objective: Antipsychotics are increasingly prescribed in pregnancy, yet little is known about potential long-term developmental effects on children. In this study, we investigated the effect of prenatal antipsychotic exposure on neurodevelopmental functioning in school-aged children.

Methods: We performed a cross-sectional neurodevelopmental assessment of 91 children aged 6-14 years whose mothers had severe mental illness and were either exposed or unexposed to antipsychotic medication during pregnancy.

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Objectives: Lithium is an effective treatment for bipolar disorder, also during pregnancy to prevent the recurrence of episodes in the perinatal period. Little is known about the neuropsychological development of lithium-exposed offspring. The current study was designed to investigate neuropsychological functioning in lithium-exposed children with the aim to provide further knowledge on the long-term effects of lithium use during pregnancy.

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Background: Lithium is an effective treatment in pregnancy and postpartum for the prevention of relapse in bipolar disorder, but there is a lack of knowledge about the potential adverse impact on fetal development.

Aims: To investigate the impact of lithium exposure on early fetal growth.

Methods: In this retrospective observational cohort study, we included all singleton pregnancies of women using lithium and referred for advanced fetal ultrasound scanning between 1994 and 2018 to the University Medical Centers in Leiden and Rotterdam, the Netherlands (=119).

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Article Synopsis
  • A study was conducted to assess the knowledge and experiences of Dutch obstetric care providers about red blood cell (RBC) alloimmunization during pregnancy, highlighting the potential emotional impact on patients due to inadequate counseling.
  • Only about 10% of providers completed the questionnaire, with only 7% demonstrating sufficient overall knowledge, although 60% were well-informed about RhD immunization and prophylaxis.
  • Key knowledge gaps included the importance of non-RhD antibodies, criteria for administering extra RhD prophylaxis, and how to interpret lab results, indicating a need for improved awareness and education among healthcare providers.
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Article Synopsis
  • Pregnant women are screened for red blood cell (RBC) antibodies to identify those at risk for severe hemolytic disease of the fetus and newborn (HDFN), with a focus on measuring antibody titers and conducting the antibody-dependent cellular cytotoxicity (ADCC) test.
  • A titer cut-off of ≥16 has been determined to be effective for sensitivity (100%) but has a low positive predictive value (17%); variations were noted among different antibodies, with anti-c showing the highest rate of exceeding the cut-off.
  • The study concludes that a titer cut-off of ≥16 is sufficient to identify risks for severe HDFN, while the ADCC test can refine risk assessment, prompting recommendations for
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Objective: In this study, we aim to evaluate trends in the condition of fetuses and neonates with hemolytic disease at the time of first intrauterine transfusion (IUT) and at birth, in relation to routine first-trimester antibody screening, referral guidelines, and centralization of fetal therapy.

Method: We conducted a 30-year cohort study including all women and fetuses treated with IUT for red cell alloimmunization at the Dutch national referral center for fetal therapy.

Results: Six hundred forty-five fetuses received 1852 transfusions between 1 January 1987 and 31 December 2016.

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Background: There is controversy on critical cut-off values of laboratory testing to select pregnancies at increased risk for anti-Kell-mediated hemolytic disease of the fetus and newborn. Without early detection and treatment, anti-Kell-mediated hemolytic disease of the fetus and newborn may result in progressive fetal anemia, fetal hydrops, asphyxia, and perinatal death.

Objective: We aimed to determine the value of repeated anti-Kell titer determination and biological activity measurement using the antibody-dependent cellular cytotoxicity test determination in the management of pregnancies at risk for anti-Kell-mediated hemolytic disease of the fetus and newborn.

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Background: Concerns about teratogenicity and maternal and offspring complications restrict the use of lithium during pregnancy for the treatment of mood disorders. We aimed to investigate the association between in-utero lithium exposure and risk of pregnancy complications, delivery outcomes, neonatal morbidity, and congenital malformations.

Methods: In this meta-analysis, primary data from pregnant women and their children from six international cohorts based in the community (Denmark, Sweden, and Ontario, Canada) and in clinics (the Netherlands, UK, and USA) were analysed.

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Background: Intrauterine transfusion for severe alloimmunization in pregnancy performed <20 weeks' gestation is associated with a higher fetal death rate. Intravenous immunoglobulins may prevent hemolysis and could therefore be a noninvasive alternative for early transfusions.

Objective: We evaluated whether maternal treatment with intravenous immunoglobulins defers the development of severe fetal anemia and its consequences in a retrospective cohort to which 12 fetal therapy centers contributed.

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Lithium is challenging to dose during pregnancy.To provide guidance for dosing lithium during pregnancy.Retrospective observational cohort study.

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Hemolytic disease of the fetus and newborn (HDFN) remains a serious pregnancy complication which can lead to severe fetal anemia, hydrops and perinatal death. Areas covered: This review focusses on the current prenatal management, treatment with intrauterine transfusion (IUT) and promising non-invasive treatment options for HDFN. Expert commentary: IUTs are the cornerstone in prenatal management of HDFN and have significantly improved perinatal outcome in the past decades.

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Hemolytic anemia due to GPI deficiency can be severe and life threatening during fetal life. When parents decline invasive testing, ultrasound monitoring of fetuses at risk is feasible. Intrauterine transfusion can be effective for the treatment of severe fetal anemia due to GPI deficiency.

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Objective: To assess health-related quality of life (HRQOL) and behavioral functioning in children and adolescents treated before birth with intrauterine intravascular blood transfusion for alloimmune anemia.

Study Design: Cross-sectional cohort study conducted at the Dutch referral center for the management of fetal alloimmune anemia. Follow-up data were available for 285 children at a mean age of 10.

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Background: Severe alloimmune hemolytic disease of the fetus is treated with intrauterine transfusions (IUTs). Despite C, c, E, e, and K matching between mother and donor, IUT results in new antibodies in approximately 25% of women. Newly formed Fy(a), Fy(b), Jk(a), Jk(b), and S antibodies are in 83% presumably induced by the IUT donor.

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Fetal anemia is a serious complication in pregnancy and associated with perinatal mortality and morbidity. During 25 years of worldwide experience with intravascular intrauterine blood transfusion, a variety of indications have been described. Intrauterine transfusion (IUT) treatment is considered most successful for fetal anemia due to red cell alloimmunization.

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Perinatal survival rates after intrauterine transfusions (IUT) for red cell alloimmunisation now exceed 90%, which demonstrates the safety and efficacy of one of the most successful procedures in fetal therapy. However, improved perinatal survival could lead to an increased number of children with long-term disabilities. The importance of long-term follow-up studies in fetal therapy lies in both the necessity of evaluation of antenatal management as well as in evidence-based preconceptional and prenatal counselling.

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Background: Neonates with Rhesus c (Rh c) hemolytic disease of the fetus and newborn (HDFN) are often managed in the same way as neonates with Rhesus D (Rh D) HDFN, although evidence to support this policy is limited. The objective of this study was to evaluate neonatal outcome in severe Rh c HDFN compared to Rh D HDFN.

Study Design And Methods: A retrospective study of (near-)term neonates with severe Rh c (n = 22) and Rh D HDFN (n = 103; without additional antibodies) admitted to the Leiden University Medical Center between January 2000 and October 2011 was conducted.

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Background: Red-cell alloimmunisation can occur when there are incompatibilities between a woman's blood type and that of her unborn baby. This can cause the baby to become anaemic (low red blood cell count), which may require treatment during the pregnancy by blood transfusion while the baby remains within the uterus (called an intrauterine blood transfusion).

Objectives: To compare, using the best available evidence, the benefits and harms of different techniques of intrauterine fetal blood transfusion for women with red-cell alloimmunisation.

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Objective: To evaluate long-term neurodevelopmental outcome of children treated with intrauterine transfusions for fetal anemia because of parvovirus B19 infection.

Study Design: Children treated with intrauterine transfusions for fetal anemia because of parvovirus B19 infection underwent standardized age-appropriate neurodevelopmental testing. Main outcome was the incidence of neurodevelopmental impairment.

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Objective: To determine the incidence and risk factors for neurodevelopmental impairment (NDI) in children with hemolytic disease of the fetus/newborn treated with intrauterine transfusion (IUT).

Study Design: Neurodevelopmental outcome in children at least 2 years of age was assessed using standardized tests, including the Bayley Scales of Infant Development, the Wechsler Preschool and Primary Scale of Intelligence, and the Wechsler Intelligence Scale for Children, according to the children's age. Primary outcome was the incidence of neurodevelopmental impairment defined as at least one of the following: cerebral palsy, severe developmental delay, bilateral deafness, and/or blindness.

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Article Synopsis
  • The study explores the long-term effects of in utero exposure to lithium on children's growth, neurological, cognitive, and behavioral development.
  • It involved 15 children aged 3-15 who were assessed using various developmental tests, with most results falling within normal limits.
  • Findings indicate that continuing lithium treatment during pregnancy did not lead to significant adverse effects in the children's development.
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Introduction: Intravascular intrauterine transfusion (IUT) is an effective and relatively safe method for the treatment of fetal anemia. Although implemented in centers all over the world in the 1980s, the length and strength of the learning curve for this procedure has never been studied. Cumulative sum (CUSUM) analysis has been increasingly used as a graphical and statistical tool for quality control and learning curve assessment in clinical medicine.

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