Publications by authors named "Louise Oestergaard"

Article Synopsis
  • The study aimed to assess if having a family history of unexplained heart failure (HF) in first-degree relatives increases the likelihood of developing unexplained HF themselves.
  • An analysis of Danish nationwide registry data from 1978 to 2017 found that first-degree relatives of probands with unexplained HF had a significantly higher incidence rate of HF, particularly among siblings and when the proband was diagnosed at a younger age.
  • The findings suggest that relatives of individuals with early-onset unexplained HF should be screened more closely due to the increased risk of developing the condition themselves.
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Objectives: Osteoarticular infection (OAI) is a feared complication of Staphylococcus aureus bacteraemia (SAB) and is associated with poor outcomes. We aimed to explore the risk of OAI and death following SAB in patients with and without rheumatoid arthritis (RA) and to identify risk factors for OAI in patients with RA.

Methods: Danish nationwide cohort study of all patients with microbiologically verified first-time SAB between 2006-18.

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Purpose: Streptococcal bloodstream infections (BSIs) are common, yet prognostic factors are poorly investigated. We aimed to investigate the mortality according to streptococcal species and seasonal variation.

Methods: Patients with streptococcal BSIs from 2008 to 2017 in the Capital Region of Denmark were investigated, and data were crosslinked with nationwide registers for the identification of comorbidities.

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Importance: Sudden infant death syndrome (SIDS) remains a leading cause of death during the first year of life. The etiology of SIDS is complex and remains largely unknown.

Objective: To evaluate whether siblings of children who died of SIDS have a higher risk of SIDS compared with the general pediatric population.

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Objectives: To assess how biological disease-modifying antirheumatic drugs (bDMARDs), glucocorticoids and disease activity affect risk of bacteraemia (SAB) in patients with rheumatoid arthritis (RA).

Methods: In a nationwide cohort of patients with RA from the DANBIO registry, we conducted a nested case-control study including first-time microbiologically verified SAB cases from 2010 to 2018 and incidence density matched controls (1:4 by sex, age). We interlinked Danish registries and identified antirheumatic treatments, RA-specific clinical characteristics, comorbidities and socioeconomic status.

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Purpose: Infective endocarditis (IE) is frequently caused by streptococcal species, yet clinical features and mortality are poorly investigated. Our aim was to examine patients with streptococcal IE to describe clinical features and outcomes according to streptococcal species.

Methods: From 2002 to 2012, we investigated patients with IE admitted to two tertiary Danish heart centres.

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Background: Infective endocarditis (IE) is diagnosed in 7-8% of streptococcal bloodstream infections (BSIs), yet it is unclear when to perform transthoracic (TTE) and transoesophageal echocardiography (TOE) according to different streptococcal species. The aim of this sub-study was to propose a flowchart for the use of echocardiography in streptococcal BSIs.

Methods: In a population-based setup, we investigated all patients admitted with streptococcal BSIs and crosslinked data with nationwide registries to identify comorbidities and concomitant hospitalization with IE.

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Background: Streptococci frequently cause infective endocarditis (IE), yet the prevalence of IE in patients with bloodstream infections (BSIs) caused by different streptococcal species is unknown. We aimed to investigate the prevalence of IE at species level in patients with streptococcal BSIs.

Methods: We investigated all patients with streptococcal BSIs, from 2008 to 2017, in the Capital Region of Denmark.

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Objective: Morbidity and mortality due to heart failure (HF) as a complication of myocardial infarction (MI) is high, and remains among the leading causes of death and hospitalisation. This study investigated the association between family history of MI with or without HF, and the risk of developing HF after first MI.

Methods: Through nationwide registries, we identified all individuals aged 18-50 years hospitalised with first MI from 1997 to 2016 in Denmark.

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Article Synopsis
  • * Data were collected from the East Danish Endocarditis Registry, analyzing 192 patients, with 87 having moderate to severe regurgitation and the remaining 105 without, over a follow-up period of 5 years.
  • * Results showed a higher cumulative risk of HF in patients with valve regurgitation (28.7%) compared to those without (12.4%), highlighting the need for careful monitoring and potential surgical intervention for those affected.
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Introduction: bacteremia (SAB) is an invasive infection with high mortality and morbidity. Rheumatoid arthritis (RA) is associated with increased risk of infections due to the disease per se and the use of antirheumatic treatments. Few minor studies have previously investigated risk of SAB in patients with RA and indicated increased risk compared with the general population.

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Background: Little is known about the subsequent risk of stroke and recurrence of IE for patients surviving infective endocarditis (IE) with a residual vegetation at discharge.

Methods: Patients were consecutively included in the East Danish Endocarditis Registry from 2002 to 2012. We included patients undergoing medical treatment only during IE admission who were discharged alive.

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Aims: Increasing attention has been given to the risk of infective endocarditis (IE) in patients with certain blood stream infections (BSIs). Previous studies have been conducted on selected patient cohorts, yet unselected data are sparse. We aimed to investigate the prevalence of IE in BSIs with bacteria typically associated with IE.

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Objectives: To assess the association between comorbidities and Staphylococcus aureus bacteremia in children aged 5-18 years, thus, in children with a matured immune system. Further, we aimed to identify presumably healthy children acquiring bacteremia.

Study Design: By cross-linking nationwide registries, we consecutively included all children born from 1995 onward at their 5-year birthday or date of immigration during 2000-2015.

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Background: The risk of infective endocarditis (IE) is markedly increased in patients receiving chronic hemodialysis compared with the general population, but outcome data are sparse. The present study investigated causes and risk factors of mortality in a hemodialysis-treated end-stage kidney disease- (ESKD) and a non-ESKD population with staphylococcus (S.) aureus endocarditis.

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Objectives: It is known that patients surviving infective endocarditis have a poor long-term prognosis; however, few studies have addressed the long-term causes of death in patients surviving the initial hospitalization.

Methods: Using Danish administrative registries, we identified patients admitted to a hospital with 1st time infective endocarditis in the period from January 1996 to December 2014, who were alive at the time of discharge. The study population was categorized into (i) patients undergoing medical therapy only and (ii) patients undergoing surgical and medical treatment.

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Background: Staphylococcus aureus bacteremia (SAB) is the leading cause of infective endocarditis in several countries. Since socioeconomic status (SES) is known to influence the risk of infectious diseases in general, we aimed to investigate the association between SES and SAB, and risk of subsequent endocarditis in a nationwide adult population.

Methods: All Danish residents were consecutively included at age ≥ 30 years during 1996-2010.

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Background: A genetic predisposition to Staphylococcus aureus bacteremia has been demonstrated in animals, suggesting that genetic differences might influence susceptibility to S aureus in humans.

Objective: To determine whether a history of S aureus bacteremia in first-degree relatives increases the rate of the disease, and whether this rate is affected by the type of family relationship (that is, parent or sibling) or by how the relative acquired the infection.

Design: Register-based nationwide cohort study (1992 to 2011).

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