Publications by authors named "Bundgaard H"

People with HIV (PWH) and people with diabetes mellitus have increased risk of severe COVID-19, but little is known about humoral response to COVID-19 vaccines in PWH with DM. We investigated SARS-CoV-2 antireceptor-binding domain (anti-RBD) immunoglobulin G (IgG) geometrical concentrations and neutralizing antibody capacity (nAB) in PWH with and without diabetes mellitus. Anti-RBD IgG and nAB in COVID-19-vaccinated PWH were not associated with diabetes mellitus-status or HbA1c 24 months after the initial COVID-19 vaccination.

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Purpose: Bacteremia is a well-known complication to surgery and may result in infective endocarditis (IE). Transurethral resection of the prostate (TUR-P) may give rise to bacteremia, but the associated risk of IE is not well described. We aimed to examine risk of infective endocarditis following TUR-P.

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Article Synopsis
  • * A study utilizing Danish registries analyzed 4,748 patients with infective endocarditis before and after the POET trial publication, examining changes in hospital length of stay (LOS) and outcomes like mortality and relapse of bacteremia.
  • * Results showed a significant decrease in median LOS by 8 days post-POET publication, with no significant change in mortality rates but a notable reduction in relapse of bacteremia from 3.5% to 1.6%.
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It is not well investigated whether exposure to specific drug classes is associated with COVID-19. We investigated the risk of SARS-CoV-2 infection and severe COVID-19 among healthcare workers according to prescription drug use. We conducted an observational study among Danish healthcare workers.

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  • Dilated cardiomyopathy (DCM) is a major cause of heart failure, and this study analyzes genetic factors by examining 14,256 DCM cases and 36,203 participants from the UK Biobank for related traits.
  • Researchers discovered 80 genomic risk loci and pinpointed 62 potential effector genes tied to DCM, including some linked to rare variants.
  • The study uses advanced transcriptomics to explore how cellular functions contribute to DCM, showing that polygenic scores can help predict the disease in the general population and emphasize the importance of genetic testing and development of precise treatments.
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Background: Transcatheter aortic valve implantation (TAVI) is a percutaneous catheter-based treatment of aortic stenosis as an alternative to open heart valve surgery. In cases of TAVI endocarditis, the treatment possibilities may be limited as surgical removal of the infected valve may be associated with a high risk in elderly, comorbid or frail patients. The propensity of bacteria to form a biofilm on foreign material is assumed to be of importance part of the disease process in TAVI endocarditis, but no studies on biofilm formation on TAVI valves have been conducted.

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Up to 70% of all sudden cardiac deaths (SCD) in persons under 50 years are due to inherited cardiovascular diseases. First-degree relatives to younger SCD patients should be evaluated for inherited cardiovascular disease, as argued in this review. An improved understanding of SCD subtypes and genetics is expected to improve risk stratification and SCD prevention.

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This review outlines the workflow for patients and relatives with suspected inherited cardiovascular disease, diagnostic criteria, inheritance patterns, and »red flags« for selected conditions. Evaluation for inherited cardiovascular disease typically includes the index patient (proband) and relatives, emphasizing the importance of assessment at specialized clinics. Most inherited cardiovascular conditions have an autosomal dominant inheritance, but other patterns are seen.

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  • * A 12-week exercise program was studied, showing that those who participated had a significant decrease in pulmonary capillary wedge pressure, indicating better heart performance during mild exercise compared to those who maintained their usual activity.
  • * Additional benefits were observed in the exercise group, including improved peak oxygen consumption, cardiac index, and overall quality of life, suggesting that physical training is effective for enhancing cardiac function and exercise capacity among these patients.
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Purpose: To assess the positive predictive value (PPV) of the diagnostic codes for hypertrophic cardiomyopathy (HCM) in the Danish National Patient Register (DNPR) and identify factors affecting the PPV.

Patients And Methods: We randomly sampled 200 patients registered in DNPR with the diagnostic codes DI421 (obstructive) or DI422 (non-obstructive) HCM, from Eastern Denmark, between December 1, 2017, and September 16, 2021. We assessed patients' medical records and classified whether the diagnosis of HCM was correct, incorrect, or uncertain according to the European Society of Cardiology (ESC) guidelines.

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  • Objective
  • : The study aimed to investigate the link between maternal diabetes during pregnancy and subtle changes in the heart structure and function of infants, specifically looking at the effects of both preexisting diabetes and gestational diabetes mellitus (GDM).
  • Methods
  • : Researchers analyzed data from 25,486 infants who underwent heart ultrasound within their first two months. They used linear regression to evaluate differences in heart measurements between infants exposed to maternal diabetes and those who were not.
  • Results
  • : Infants whose mothers had preexisting diabetes showed significant changes like thicker heart walls, smaller heart dimensions, lower blood flow, and faster heart rates compared to unexposed infants. Those born to mothers with GDM had similar,
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Background: Hypertrophic cardiomyopathy (HCM) is a common inherited cardiac disease, and clinical and genetic family screening is recommended by guidelines.

Objectives: This study sought to investigate the diagnostic yield of screening relatives of HCM patients and identify predictive factors for HCM development during long-term follow-up in relatives from gene-elusive families.

Methods: This was a retrospective cohort study of families screened at clinics for inherited cardiomyopathies in Eastern Denmark, from 2006 to 2023.

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  • Maternal hypertensive disorders of pregnancy (HDPs), such as preeclampsia and gestational hypertension, may affect the cardiac conduction system of newborns, which is not well studied yet.
  • A study analyzed ECG data from 11,826 newborns, comparing those exposed to HDPs (441 preeclampsia and 320 gestational hypertension) with those unexposed.
  • Results indicated that infants exposed to preeclampsia had longer QRS durations and lower R-wave amplitudes, while those exposed to gestational hypertension showed prolonged QT intervals, suggesting a potential impact on cardiac health.
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  • Regular exercise is beneficial for patients with chronic heart failure, but its impact on those with genetic dilated cardiomyopathy (DCM) is less understood, prompting a study on vigorous cycling for DCM caused by truncating titin variants (TTNtv).
  • The study involved 14 participants completing an 8-week exercise training program that led to significant improvements in peak oxygen uptake (VO) and other cardiac functions without any adverse events.
  • Key findings showed that exercise training resulted in a 10% increase in peak VO, enhancements in cardiac output and blood volume, and a trend towards improved left ventricular function, highlighting the potential benefits of vigorous exercise for DCM patients.
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Background: Cardiac troponin (cTn) is key in diagnosing myocardial infarction (MI). After MI, the clinically observed half-life of cTn has been reported to be 7 to 20 hours, but this estimate reflects the combined elimination and simultaneous release of cTn from cardiomyocytes. More precise timing of myocardial injuries necessitates separation of these 2 components.

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  • The study aims to investigate the genetic factors associated with accessory atrioventricular pathways (APs) and related heart rhythm disorders using a genome-wide association study (GWAS).
  • It involved analyzing genetic data from over 1,200,000 control individuals and 2,310 individuals with APs from multiple countries and various health databases.
  • Key findings revealed three significant genetic variants linked to APs, particularly in specific genes (CCDC141 and SCN10A), with implications for understanding conditions like paroxysmal supraventricular tachycardia (PSVT).
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Background: The aim of this study was to investigate the clinical implication of incidentally induced atrial fibrillation (AF) during programmed electrical stimulation (PES) in patients with left ventricular systolic dysfunction (≤40%) after an acute myocardial infarction (MI).

Methods: In this study, we included 231 patients from the Cardiac Arrhythmias and RIsk Stratification after Myocardial InfArction (CARISMA) study with left ventricular ejection fraction ≤40% and no prior history of AF. These patients underwent PES 6 weeks post-MI as part of the study protocol.

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Background: Sex- and population-specific 99th percentiles of high-sensitivity cardiac troponin (hs-cTn) are recommended in guidelines although the evidence for a clinical utility is sparse. The DANSPOT trial will investigate the clinical effect of sex- and population-specific 99th percentiles of cTn. We report the 99th percentiles derived from this trial and their dependency on kidney function.

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  • Electrocardiographic abnormalities are common in patients with arrhythmogenic right ventricular cardiomyopathy and were analyzed over the long term in a study involving 353 patients and almost 7,000 ECGs.
  • The study found that over time, there were notable changes in QRS voltage, R- and T-wave amplitudes, as well as increases in QRS duration, terminal activation duration, and QTc interval, indicating a progressive worsening of the condition.
  • T-wave inversions observed before diagnosis were linked to a higher risk of future ventricular arrhythmias, suggesting these ECG abnormalities could serve as early indicators of the disease even if they don't meet the full diagnostic criteria.
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Background: The influence of age on cardiac troponin is unclear and may vary between cardiac troponin T (cTnT) and I (cTnI). We aimed to compare the impact of age on the diagnostic and prognostic utility of cTnT and cTnI.

Methods: This Danish nationwide, register-based cohort study included patients with at least one cardiac troponin (cTn) measurement from 2009 through June 2022, stratified into decades of age.

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Background: The health-related quality of life (HRQOL) and cardiopulmonary exercise testing (CPET) performance of individuals with subclinical and early stage hypertrophic cardiomyopathy (HCM) have not been systematically studied. Improved understanding will inform the natural history of HCM and factors influencing well-being.

Methods: VANISH trial (Valsartan for Attenuating Disease Evolution in Early Sarcomeric HCM) participants with early stage sarcomeric HCM (primary analysis cohort) and subclinical HCM (sarcomere variant without left ventricular hypertrophy comprising the exploratory cohort) who completed baseline and year 2 HRQOL assessment via the pediatric quality of life inventory and CPET were studied.

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encodes for the Popeye domain-containing protein 2 which has an important role in cardiac pacemaking and conduction, due in part to its cAMP-dependent binding and regulation of TREK-1 potassium channels. Loss of in mice results in sinus pauses and bradycardia and morpholino knockdown of zebrafish results in atrioventricular (AV) block. We identified bi-allelic variants in in 4 families that presented with a phenotypic spectrum consisting of sinus node dysfunction, AV conduction defects and hypertrophic cardiomyopathy.

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The prevalence of interatrial communications in newborns, i.e., patent foramen ovale or atrial septal defect, was previously reported to be between 24 and 92%, but the area has been impeded by lack of a universal classification method.

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Background: Left ventricular noncompaction (LVNC) is characterized by excessive trabeculations of the left ventricular (LV) wall.

Objectives: The authors aimed to examine changes in LV function and morphology in 2 to 4-year-old children with and without LVNC at birth and to describe the prevalence of LVNC in first-degree relatives.

Methods: Echocardiograms in children with and without LVNC (matched 1:4) were performed at 2 to 4 years and in first-degree relatives.

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