Julie Horn

Dr. Julie Horn

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Research Focus & Metrics

Academic Career Length

14Years (2013-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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27 December 2018 in European Heart Journal
Verified
Journal Article
Open access
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AMAmanda R Markovitz
Amanda R Markovitz
JSJennifer J Stuart
Jennifer J Stuart
JHJulie Horn
Julie Horn
PWPaige L Williams
Paige L Williams
EREric B Rimm
Eric B Rimm
BÅBjørn Olav Åsvold
Bjørn Olav Åsvold
To evaluate whether history of pregnancy complications [pre-eclampsia, gestational hypertension, preterm delivery, or small for gestational age (SGA)] improves risk prediction for cardiovascular disease (CVD). This population-based, prospective cohort study linked data from the HUNT Study, Medical Birth Registry of Norway, validated hospital records, and Norwegian Cause of Death Registry. Using an established CVD risk prediction model (NORRISK 2), we predicted 10-year risk of CVD (non-fatal myocardial infarction, fatal coronary heart disease, and non-fatal or fatal stroke) based on established risk factors (age, systolic blood pressure, total and HDL-cholesterol, smoking, anti-hypertensives, and family history of myocardial infarction). We evaluated whether adding pregnancy complication history improved model fit, calibration, discrimination, and reclassification. Among 18 231 women who were parous, ≥40 years of age, and CVD-free at start of follow-up, 39% had any pregnancy complication history and 5% experienced a CVD event during a median follow-up of 8.2 years. While pre-eclampsia and SGA were associated with CVD in unadjusted models (HR 1.96, 95% CI 1.44–2.65 for pre-eclampsia and HR 1.46, 95% CI 1.18–1.81 for SGA), only pre-eclampsia remained associated with CVD after adjusting for established risk factors (HR 1.60, 95% CI 1.16–2.17). Adding pregnancy complication history to the established prediction model led to small improvements in discrimination (C-index difference 0.004, 95% CI 0.002–0.006) and reclassification (net reclassification improvement 0.02, 95% CI 0.002–0.05). Pre-eclampsia independently predicted CVD after controlling for established risk factors; however, adding pre-eclampsia, gestational hypertension, preterm delivery, and SGA made only small improvements to CVD prediction among this representative sample of parous Norwegian women.

1 November 2021 in Stroke
Verified
Journal Article
Closed access
JHJens Wilhelm Horn
Jens Wilhelm Horn
TFTingting Feng
Tingting Feng
BMBjørn Mørkedal
Bjørn Mørkedal
LSLinn Beate Strand
Linn Beate Strand
JHJulie Horn
Julie Horn
IJImre Janszky
Imre Janszky
Background and Purpose: Obesity is one of the most prevalent modifiable risk factors of ischemic stroke. However, it is still unclear whether obesity itself or the metabolic abnormalities due to obesity increase the risk of ischemic stroke. We therefore investigated the association between metabolic health, weight, and risk of ischemic stroke in a large prospective cohort study. Methods: In the Norwegian HUNT study (Trøndelag Health Study), we included 35 105 participants with complete information on metabolic risk factors and relevant covariates. Metabolically unhealthy state was defined as sex specific increased waist circumference in addition to 2 or more of the following criteria: hypertension, increased blood pressure, decreased high-density lipoprotein, triglycerides or glucose, or self-reported diagnosis of diabetes. We then applied Cox proportional hazard models to estimate the risk for ischemic stroke among overweight and obese metabolically healthy and unhealthy participants compared with metabolically healthy, normal weight participants. Results: A total of 1161 ischemic stroke cases occurred after an average observation time of 11.9 years. In general, metabolically unhealthy participants were at increased risk of ischemic stroke (for obese participants: hazard ratio, 1.30 [95% CI, 1.09–1.56] compared with metabolically healthy participants with a normal body mass index). Hypertension appeared to be the most important metabolic risk factor. Metabolically healthy participants with overweight or obesity were at similar risk of ischemic stroke compared with normal weight participants (hazard ratio, 1.02 [95% CI, 0.81–1.28] for participants with obesity). Obesity and overweight even over an extended period of time seems to be benign about ischemic stroke, as long as it was not associated with metabolic abnormalities. Conclusions: Obesity was not an independent ischemic stroke risk factor in this cohort, and the risk depended more on the metabolic consequences of obesity.

27 November 2019 in BMC Pregnancy and Childbirth
Verified
Journal Article
Open access
PDF file
HSHeidi Linn Sandsæter
Heidi Linn Sandsæter
JHJulie Horn
Julie Horn
JRJanet W. Rich-Edwards
Janet W. Rich-Edwards
HHHege S. Haugdahl
Hege S. Haugdahl
Background: Preeclampsia (PE) and gestational diabetes mellitus (GDM) are both associated with increased risk of future cardiovascular disease (CVD). Knowledge of the relationship between these pregnancy complications and increased CVD risk enables early prevention through lifestyle changes. This study aimed to explore women’s experiences with PE and/or GDM, and their motivation and need for information and support to achieve lifestyle changes.Methods: Systematic text condensation was used for thematic analysis of meaning and content of data from five focus group interviews with 17 women with PE and/or GDM, with a live birth between January 2015 and October 2017.Results: This study provides new knowledge of how women with GDM and/or PE experience pregnancy complications in a Nordic healthcare model. It reveals the support they want and the important motivating factors for lifestyle change. We identified six themes: Trivialization of the diagnosis during pregnancy; Left to themselves to look after their own health; The need to process the shock before making lifestyle changes (severe PE); A desire for information about future disease risk and partner involvement; Practical solutions in a busy life with a little one, and; Healthcare professionals can reinforce the turning point.The women with GDM wanted healthcare professionals to motivate them to continue the lifestyle changes introduced during pregnancy. Those with severe PE felt a need for individualized care to ensure that they had processed their traumatic labor experiences before making lifestyle changes. Participants wanted their partner to be routinely involved to ensure a joint understanding of the need for lifestyle changes. Motivation for lifestyle changes in pregnancy was linked to early information and seeing concrete results.Conclusions: Women with PE and GDM have different experiences of diagnosis and treatment, which will affect the follow-up interventions to reduce future CVD risk through lifestyle change. For GDM patients, lifestyle changes in pregnancy should be reinforced and continued postpartum. Women with PE should be informed by their general practitioner after birth, and given a plan for lifestyle change. Those with severe PE will need help in processing the trauma, and stress management should be routinely offered.

24 August 2018 in BJOG: An International Journal of Obstetrics & Gynaecology
Verified
Journal Article
Open access
PDF file
JHJulie Horn
Julie Horn
LTLj Tanz
Lj Tanz
JSJj Stuart
Jj Stuart
AMAr Markovitz
Ar Markovitz
GSG Skurnik
G Skurnik
JRJw Rich‐Edwards
Jw Rich‐Edwards
Objective: To assess the association between the outcome of a woman's first pregnancy and risk of clinical cardiovascular disease risk factors.Design: Prospective cohort study.Setting and population: Nurses’ Health Study II.Methods: Multivariable‐adjusted Cox proportional hazards models were used to compute hazard ratios (HRs) and 95% confidence intervals (CIs) for the associations between first pregnancy outcome and hypertension, type 2 diabetes, and hypercholesterolemia.Main outcome measures: Hypertension, type 2 diabetes, and hypercholesterolemia.Results: Compared to women who reported a singleton live first birth, women with early spontaneous abortion (<12 weeks) had a greater rate of type 2 diabetes (HR: 1.20; 95% CI: 1.07–1.34) and hypercholesterolemia (HR: 1.06; 95% CI: 1.02–1.10), and a marginally increased rate of hypertension (HR: 1.05, 95% CI: 1.00–1.11). Late spontaneous abortion (12–19 weeks) was associated with an increased rate of type 2 diabetes (HR: 1.38; 95% CI: 1.14–1.65), hypercholesterolemia (HR: 1.11; 95% CI: 1.03–1.19), and hypertension (HR: 1.15; 95% CI: 1.05–1.25). The rates of type 2 diabetes (HR: 1.45; 95% CI: 1.13–1.87) and hypertension (HR: 1.15; 95% CI: 1.01–1.30) were higher in women who delivered stillbirth. In contrast, women whose first pregnancy ended in an induced abortion had lower rates of hypertension (HR: 0.87; 95% CI: 0.84–0.91) and type 2 diabetes (HR: 0.89; 95% CI: 0.79–0.99) than women with a singleton live birth.Conclusions: Several types of pregnancy loss were associated with an increased rate of hypertension, type 2 diabetes, and hypercholesterolemia, which may provide novel insight into the pathways through which pregnancy outcomes and CVD are linked.Tweetable Pregnancy loss is associated with later maternal risk of hypertension, type 2 diabetes, and hypercholesterolemia.

7 August 2018 in Journal of the American Heart Association
Verified
Journal Article
Open access
EHEirin B. Haug
Eirin B. Haug
JHJulie Horn
Julie Horn
AMAmanda R. Markovitz
Amanda R. Markovitz
AFAbigail Fraser
Abigail Fraser
LVLars J. Vatten
Lars J. Vatten
BÅBjørn O. Åsvold
Bjørn O. Åsvold
Background: Women with hypertensive pregnancy disorders have adverse levels of cardiovascular risk factors. It is unclear how this adverse risk factor profile evolves during adult life. We compared life course trajectories of cardiovascular risk factors in women with preeclampsia or gestational hypertension in their first pregnancy to normotensive women. Methods and Results: We linked information on cardiovascular risk factors from the population‐based HUNT (Nord‐Trøndelag Health Study) surveys with pregnancy information from the Medical Birth Registry of Norway. Trajectories of cardiovascular risk factors were constructed for 22 308 women with a normotensive first pregnancy; 1092 with preeclampsia, and 478 with gestational hypertension in first pregnancy. Already before first pregnancy, women with preeclampsia in their first pregnancy had higher measures of adiposity, blood pressure, heart rate, and serum lipids and glucose compared with women with a normotensive first pregnancy. After first pregnancy, there was a parallel development in cardiovascular risk factor levels, but women with a normotensive first pregnancy had a time lag of >10 years compared with the preeclampsia group. There were no clear differences in risk factor trajectories between women with gestational hypertension and women with preeclampsia. Conclusions: Women with hypertensive pregnancy disorders in their first pregnancy had an adverse cardiovascular risk factor profile before pregnancy compared with normotensive women, and the differences persisted beyond 50 years of age. Hypertensive disorders in pregnancy signal long‐term increases in modifiable cardiovascular risk factors, and may be used to identify women who would benefit from early prevention strategies.

9 March 2016 in Acta Obstetricia et Gynecologica Scandinavica
Verified
Journal Article
Closed access
PDF file
FMFredrikke Nohr Moth
Fredrikke Nohr Moth
TSTharani Rita Sebastian
Tharani Rita Sebastian
JHJulie Horn
Julie Horn
JRJanet Rich-Edwards
Janet Rich-Edwards
PRPål R. Romundstad
Pål R. Romundstad
BÅBjørn Olav Åsvold
Bjørn Olav Åsvold