Blar i Bergen Open Research Archive på forfatter "Morken, Nils-Halvdan"
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Assfociations of perfluoroalkyl substances (PFAS) with lower birth weight: An evaluation of potential confounding by glomerular filtration rate using a physiologically based pharmacokinetic model (PBPK)
Verner, Marc-André; Loccisano, Anne E.; Morken, Nils-Halvdan; Yoon, Miyoung; Wu, Huali; McDougall, Robin; Maisonet, Mildred; Marcus, Michele; Kishi, Reiko; Miyashita, Chihiro; Chen, Mei-Huei; Hsieh, Wu-Shiun; Andersen, Melvin E.; Clewell, Harvey J.; Longnecker, Matthew P. (Peer reviewed; Journal article, 2015-12)Background: Prenatal exposure to perfluoroalkyl substances (PFAS) has been associated with lower birth weight in epidemiologic studies. This association could be attributable to glomerular filtration rate (GFR), which is ... -
Associations between non-registered ultrasound examination in pregnancy and adverse perinatal outcomes in immigrant and non-immigrant women: a Norwegian population-based study 1999–2016
Mæland, Karolina S.; Morken, Nils-Halvdan; Schytt, Erica; Aasheim, Vigdis; Nilsen, Roy Miodini (Journal article; Peer reviewed, 2024)Background: Prenatal ultrasound examinations are important to detect placental dysfunction. Several ultrasound-detected abnormalities can be managed during pregnancy or childbirth, thus improve health outcomes. Maternal ... -
Availability and access in modern obstetric care: a retrospective population-based study
Engjom, Hilde Marie; Morken, Nils-Halvdan; Norheim, Ole Frithjof; Klungsøyr, Kari (Peer reviewed; Journal article, 2014)Objective: To assess the availability of obstetric institutions, the risk of unplanned delivery outside an institution and maternal morbidity in a national setting in which the number of institutions declined from 95 to ... -
Birth Weight in Consecutive Pregnancies and Maternal Cardiovascular Disease Mortality Among Spontaneous and Iatrogenic Term Births: A Population-Based Cohort Study
Sima, Yeneabeba Tilahun; Skjaerven, Rolv; Kvalvik, Liv Grimstvedt; Morken, Nils-Halvdan; Klungsøyr, Kari; Mannseth, Janne; Sørbye, Linn Marie (Journal article; Peer reviewed, 2023)Knowledge on the association between offspring birth weight and long-term risk of maternal cardiovascular disease (CVD) mortality is often based on firstborn infants without consideration of women’s consecutive births. We ... -
Birthweight of the subsequent singleton pregnancy following a first twin or singleton pregnancy
Basnet, Prativa; Skjaerven, Rolv; Harmon, Quaker E.; Wilcox, Allen J.; Klungsøyr, Kari; Sørbye, Linn Marie; Morken, Nils-Halvdan; Kvalvik, Liv Grimstvedt (Journal article; Peer reviewed, 2023)Introduction Birthweight is an important pregnancy indicator strongly associated with infant, child, and later adult life health. Previous studies have found that second-born babies are, on average, heavier than first-born ... -
Candidate gene analysis of spontaneous preterm delivery: New insights from re-analysis of a case-control study using case-parent triads and control-mother dyads
Myking, Solveig; Myhre, Ronny; Gjessing, Håkon K.; Morken, Nils-Halvdan; Sengpiel, Verena; Williams, Scott M.; Ryckman, Kelli K.; Magnus, Per; Jacobsson, Bo (Peer reviewed; Journal article, 2011-12-30)Background: Spontaneous preterm delivery (PTD) has a multifactorial etiology with evidence of a genetic contribution to its pathogenesis. A number of candidate gene case-control studies have been performed on spontaneous ... -
Cesarean delivery in Norwegian nulliparous women with singleton cephalic term births, 1967–2020: a population-based study
Sima, Yeneabeba; Skjaerven, Rolv; Kvalvik, Liv Grimstvedt; Morken, Nils-Halvdan; Klungsøyr, Kari; Sørbye, Linn Marie (Journal article; Peer reviewed, 2022)Background: Nulliparous women contribute to increasing cesarean delivery in the Nordic countries and advanced maternal age has been suggested as responsible for rise in cesarean delivery rates in many developed countries. ... -
Down syndrome and associated atrioventricular septal defects in a nationwide Norwegian cohort: Prevalence, time trends, and outcomes
Nordklev, Cecilie Bryn; Gjesdal, Ola; Gunnes, Nina; Holmstrøm, Henrik; Morken, Nils-Halvdan; Vangen, Siri; Sitras, Vasilis (Journal article; Peer reviewed, 2024)Introduction The prevalence of Down syndrome (DS) is approximately 1 per 1000 births and is influenced by increasing maternal age over the last few decades. DS is strongly associated with congenital heart defects (CHDs), ... -
Gestational diabetes mellitus and interpregnancy weight change: A population-based cohort study
Sørbye, Linn Marie; Skjaerven, Rolv; Klungsøyr, Kari; Morken, Nils-Halvdan (Peer reviewed; Journal article, 2017-08-01)Background: Being overweight is an important risk factor for Gestational Diabetes Mellitus (GDM), but the underlying mechanisms are not understood. Weight change between pregnancies has been suggested to be an independent ... -
Increased risk of peripartum perinatal mortality in unplanned births outside an institution: a retrospective population-based study
Engjom, Hilde Marie; Morken, Nils-Halvdan; Høydahl, Even; Norheim, Ole Frithjof; Klungsøyr, Kari (Peer reviewed; Journal article, 2017-08)Background: Births in midwife-led institutions may reduce the frequency of medical interventions and provide cost-effective care, while larger institutions offer medically and technically advanced obstetric care. Unplanned ... -
Interpregnancy weight change and recurrence of gestational diabetes mellitus: a population-based cohort study
Sørbye, Linn Marie; Cnattingius, Sven; Skjærven, Rolv; Klungsøyr, Kari; Wikström, Anna-Karin; Kvalvik, Liv Grimstvedt; Morken, Nils-Halvdan (Journal article; Peer reviewed, 2020)Objective: To estimate recurrence risk of gestational diabetes mellitus (GDM) by interpregnancy weight change. Design: Population-based cohort study. Setting and population: Data from the Swedish (1992–2010) and the ... -
Is the increasing prevalence of labor induction accompanied by changes in pregnancy outcomes? An observational study of all singleton births at gestational weeks 37–42 in Norway during 1999–2019
Haavaldsen, Camilla; Morken, Nils-Halvdan; Saugstad, Ola Didrik; Eskild, Anne (Journal article; Peer reviewed, 2022)Introduction Induction of labor is often performed to prevent adverse perinatal and maternal outcomes, and has become increasingly common. We studied whether changes in prevalence of labor induction in gestational weeks ... -
Lipid levels after childbirth and association with number of children: A population-based cohort study
Pirnat, Aleksandra; deRoo, Lisa; Skjaerven, Rolv; Morken, Nils-Halvdan (Peer reviewed; Journal article, 2019-10-24)Objective Low parity women are at increased risk of cardiovascular mortality. Unfavourable lipid profiles have been found in one-child mothers years before they conceive. However, it remains unclear whether unfavourable ... -
Long-term cardiovascular mortality in women with twin pregnancies by lifetime reproductive history
Basnet, Prativa; Skjaerven, Rolv; Sørbye, Linn Marie; Morken, Nils-Halvdan; Klungsøyr, Kari; Singh, Aditi; Mannseth, Janne; Harmon, Quaker E.; Kvalvik, Liv Grimstvedt (Journal article; Peer reviewed, 2022)Background: Women with one lifetime singleton pregnancy have increased risk of cardiovascular disease (CVD) mortality compared with women who continue reproduction particularly if the pregnancy had complications. Women ... -
Long-term mortality in mothers with perinatal losses and risk modification by surviving children and attained education: A population-based cohort study
Halland, Frode; Morken, Nils-Halvdan; deRoo, Lisa; Klungsøyr, Kari; Wilcox, Allen James; Skjaerven, Rolv (Peer reviewed; Journal article, 2016)Objective: To assess the association between perinatal losses and mother’s long-term mortality and modification by surviving children and attained education. Design: A population-based cohort study. Setting: Norwegian ... -
Maternal complications in pregnancy and childbirth for women with epilepsy: time trends in a nationwide cohort
Danielsson, Kim Christian; Gilhus, Nils Erik; Borthen, Ingrid; Lie, Rolv T.; Morken, Nils-Halvdan (Peer reviewed; Journal article, 2019)Objective: Obstetric trends show changes in complication rates and maternal characteristics such as caesarean section, induced labour, and maternal age. To what degree such general time trends and changing patterns of ... -
Maternal glomerular filtration rate in pregnancy and fetal size
Morken, Nils-Halvdan; Travlos, Gregory S.; Wilson, Ralph E.; Eggesbø, Merete Åse; Longnecker, Matthew P. (Peer reviewed; Journal article, 2014-07-08)Background The relationship of maternal glomerular filtration rate (GFR) in pregnancy to fetal size needs to be better characterized as it impacts an ongoing debate about confounding effect of maternal GFR in investigations ... -
Maternal reasons for requesting planned cesarean section in Norway: A qualitative study
Eide, Kristiane Tislevoll; Morken, Nils-Halvdan; Bærøe, Kristine (Peer reviewed; Journal article, 2019)Background: Pregnant women who request a cesarean section in the absence of obstetric indication have become a highly debated issue in academic as well as popular literature. In order to find adequate, targeted treatment ... -
Parental epigenetic age acceleration and risk of adverse birth outcomes: the Norwegian mother, father and child cohort study
Magnus, Maria Christine; Lee, Yunsung; Carlsen, Ellen Øen; Arge, Lise Andrea; Jugessur, Astanand; Kvalvik, Liv Grimstvedt; Morken, Nils-Halvdan; Ramlau-Hansen, Cecilia H.; Myrskyla, Miko; Magnus, Per Minor; Håberg, Siri Eldevik (Journal article; Peer reviewed, 2024)Background Few studies have examined associations between maternal epigenetic age acceleration and adverse birth outcomes, and none have investigated paternal epigenetic age acceleration. Our objective was to assess the ... -
Paternal and maternal birthweight and offspring risk of macrosomia at term gestations: A nationwide population study
Rasmussen, Svein; Carlsen, Ellen Øen; Linde, Lorentz; Morken, Nils-Halvdan; Håberg, Siri Eldevik; Ebbing, Cathrine (Journal article; Peer reviewed, 2023)Background There is a paucity of data on whether parents' macrosomia (birthweight ≥4500 g) status influences the risk of macrosomia in the offspring. The role of maternal overweight in the generational effect of macrosomia ...