Publications by authors named "Peter G J Horst"

Background: Lamotrigine, an antiseizure medication used for epilepsy and bipolar disorders, is often prescribed to women of childbearing age due to relatively low teratogenic risk. It is known that lamotrigine use in lactation leads to detectable concentrations in breast milk, although concentrations vary significantly among individuals.

Case Presentation: A 35-year-old pregnant woman with epilepsy presented to our outpatient clinic.

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Introduction: Multiple myeloma (MM) is the second most common hematologic malignancy. MM is associated with significant morbidity due to its end-organ destruction and is a disease of the older population. Although survival rates for MM have improved over the last decade, due to an increase in treatment options, the disease remains incurable.

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Objective: In this retrospective cohort study, we compared neonatal and maternal outcomes after exposure of different psychopharmacological classes of drugs. Both psychiatric diseases and pharmacological treatment of these are associated with lower birth weights, lower APGAR scores, and NICU admission. Therefore, we tried to rule out the role of psychotropics as if no differences were found between pharmacological classes, the lower birthweights might not be attributable to these.

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Objectives: This study aimed to investigate the plasma and breastmilk concentrations for sertraline, citalopram and paroxetine for assessment of the Milk/Plasma (M/P) ratio and Absolute Infant Dose (AID), and to determine actual infant drug exposure through breastfeeding. Subsequently, informed recommendations will be formulated regarding the advisability of breastfeeding in women undergoing treatment with the three most widely used antidepressants.

Methods: A pharmacokinetic study in lactating women and their infants using sertraline, citalopram or paroxetine was performed.

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Purpose: In a cohort of pregnant women using antihypertensive drugs, we compared exposure to antidepressants versus no exposure and the possible association with birth weight, APGAR scores, NICU admission, and maternal admission to an obstetrical intensive care unit (OHC). It was hypothesized that pregnant women with hypertensive disorders using antidepressants are at greater risk of complications.

Methods: A retrospective cohort study in a general teaching hospital in Zwolle, in the Middle-Northern part of The Netherlands.

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Aims: To compare the gestational age of neonates in utero exposed to benzodiazepines (BDZs) with nonexposed controls. Secondary objectives were birth weight, presence of congenital malformations, APGAR score and the need for >3 months (prolonged) maternal psychiatric care.

Methods: A retrospective cohort study of women and neonates from 2013 to 2021 with univariate and multivariable analysis to study the associations between BDZ exposure and gestational age compared to nonexposed women with mental health problems.

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Objectives: Therapeutic drug monitoring is performed routinely in patients on anti-epileptic drugs (AEDs) for optimisation and individualisation of therapy. The dried blood spot (DBS) sampling technique is a suitable, more patient-friendly alternative for conventional venous sampling methods. However, before DBS can be used in routine care, data are needed to establish the correlation between standard plasma concentrations obtained from venous puncture and concentrations measured through DBS obtained by finger prick.

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Objectives: Limited data exist about the antimicrobial target attainment and pharmacokinetics of cefotaxime in critically ill patients in the ICU undergoing continuous kidney replacement therapy (CKRT). We conducted a prospective observational study in two large teaching hospitals [Isala Hospital (IH) and Zwolle and Maasstad Hospital (MH)] to investigate target attainment and pharmacokinetics of cefotaxime in patients undergoing CKRT.

Patients And Methods: Patients aged ≥18 years admitted to the ICU treated with IV cefotaxime 1000 mg three times daily (IH) or 4 times daily (MH) were included.

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Background: The prevalence of diagnosed chronic hepatitis C virus (HCV) infection among pregnant women in the Netherlands is 0.26%, yet many cases remain undiagnosed. HCV screening and treatment of pregnant HCV carriers could reduce the burden of disease and limit vertical transmission from mother to child.

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Aims: Platelet inhibition induced by P2Y12 receptor antagonists in patients with ST-elevation myocardial infarction (STEMI) can be affected by concomitant use of opioids. The aim of this trial was to examine the effect of intravenous (iv) acetaminophen compared with iv fentanyl on P2Y12 receptor inhibition in patients with STEMI.

Methods And Results: The Opioids aNd crushed Ticagrelor In Myocardial infarction Evaluation (ON-TIME 3) trial randomized 195 STEMI patients who were scheduled to undergo primary percutaneous coronary intervention (PCI) and were pre-treated with crushed ticagrelor to iv acetaminophen (N = 98) or iv fentanyl (N = 97) in the ambulance.

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What Is Known And Objective: Nephrotoxicity is a frequently occurring side effect of cisplatin, which may be reduced by applying ample hydration. The aim of this study was to determine whether there is a difference in decline in renal function due to cisplatin between a short hydration (SH) and long hydration scheme (LH).

Methods: A retrospective, observational, cohort study was conducted in two hospitals.

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During pregnancy, the pharmacokinetics of an antiepileptic drug is altered because of changes in the clearance capacity and volume of distribution. These changes may have consequences for the frequency of seizures during pregnancy and fetal exposure to antiepileptic drugs. In 2009, a review was published providing guidance for the dosing and therapeutic drug monitoring of antiepileptic drugs during pregnancy.

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It is important for healthcare professionals and pregnant women to have knowledge of the risks of using medicines during pregnancy and lactation. This not only concerns the influence of the medicinal product on the pregnant woman and the pregnancy, but also its impact on the growth and development of the (unborn) child, neonatal adaptation, possible precautions regarding child-birth, drug excretion in breast milk, and the short-term and long-term consequences for the newborn child. At present, information and advices are often fragmentary, sometimes contradictory, not easily accessible, or even not available at all.

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It has been estimated by the World Health Organization (WHO) that over 71 million people were infected with the hepatitis C virus (HCV) in 2015. Since then, a number of highly effective direct-acting antiviral (DAA) regimens have been licensed for the treatment of chronic HCV infection: sofosbuvir/daclatasvir, sofosbuvir/ledipasvir, elbasvir/grazoprevir, sofosbuvir/velpatasvir, glecaprevir/pibrentasvir, and sofosbuvir/velpatasvir/voxilaprevir. With these treatment regimens, almost all chronic HCV-infected patients, even including prior DAA failures, can be treated effectively and safely.

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The aim of this study was to determine the quality of lactation studies investigating antidepressants in breast milk according to the Food and Drug Administration (FDA) draft guidelines and the article by Begg et al., 2002, published in the official journal of the International Lactation Consultant Association (ILCA). We used PubMed and LactMed for the literature search.

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Although opioids are recommended and frequently used in the acute phase of ST-elevation myocardial infarction (STEMI), their use is accompanied by serious side effects. In particular, gastrointestinal adverse effects may disturb absorption of essential oral medication like platelet inhibitors. This may cause suboptimal platelet inhibition and increased risk of acute stent thrombosis.

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Breastfeeding is important for the development of the child. Many antibiotics are considered safe during breastfeeding. The aim of the study was to assess the quality of lactation studies with antibiotics using the FDA and International Lactation Consultant Association quality guidelines for lactation studies.

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Backgound: Patients are at risk for severe postoperative infections after coronary artery bypass graft (CABG) surgery. Clinical laboratory data showed that unbound plasma concentrations of cefuroxime were not always adequate, therefore we developed a new dosing regimen.

Objective: The aim of this prospective study is to evaluate the new dosing strategy by monitoring patients for unbound cefuroxime plasma concentrations during CABG surgery with cardiopulmonary bypass (CPB).

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Aim: The aim of this review was to investigate the quality of the current literature on the transfer of anticonvulsants to breast milk to provide an overview of which anticonvulsants are in need of further research.

Methods: We reviewed the quality of the available lactation studies for 19 anticonvulsants against the guidelines of the Food and Drug Administration (FDA) and the International Lactation Consultant Association (ILCA).

Results: Except for one study on lamotrigine and one case report on gabapentin, no study on anticonvulsants had both the absolute infant dose (AID) and milk to plasma ratio (M : P) correctly assessed.

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In the present study we developed and validated a liquid chromatography/tandem mass spectrometry (LC-MS/MS) assay for the determination of flucloxacillin in human plasma and microdialysis samples and cloxacillin in microdialysis samples, using oxacillin as the internal standard for the assay. The samples were separated on a UPLC BEH C18,1.7 μm column (2.

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Background: Data about adherence of antidepressants during pregnancy are lacking. However, it is important to gain insight into adherence in this population to reduce perinatal risks for relapse of depression.

Objective: The objective of this study was to search for an inexpensive and easy method to implement daily for assessing medication adherence during pregnancy.

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Background: Weight-loss products, which are freely available in some other countries and on the Internet, may be contaminated with ingredients not mentioned on the label.

Case Description: We describe a 43-year-old woman who presented to the emergency ward of our hospital after stabbing herself in the stomach with a knife, because of severe psychosis. A few days after admission her symptoms were completely gone and there were no longer signs of psychosis.

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Objectives: Patients with coronary artery bypass graft (CABG) surgery are at risk for severe postoperative infections. Prophylactic cefuroxime may help to reduce this risk, however sufficient concentrations, i.e.

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Aims: Antidepressant use has increased in the last decade. Several studies have suggested a possible association between maternal antidepressant use and teratogenic effects.

Methods: The pharmacy prescription database IADB.

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The increase in selective serotonin re-uptake inhibitor (SSRI) use during pregnancy, questions concerning abnormal development of the enteric nervous system (ENS), increase in laxative use in children and the association of fluoxetine with infantile hypertrophic pyloric stenosis (IHPS) gave rise to this pharmacological literature review. The role of 5-HT and the NE uptake in ontogeny of the ENS and the effects SSRIs and TCAs might have on the development of the ENS were investigated. The literature study showed that SSRIs may influence the development of the ENS in two ways.

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