Publications by authors named "Bjarne Linde Norgaard"

The Western Denmark Heart Registry (WDHR) is a semi-national, multicenter-based clinical registry with unique potential for cardiovascular research. The registry has provided detailed prospectively registered information on patient and procedure characteristics since 1999. WDHR data can be linked to additional data in other healthcare registries in Denmark.

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Background: Patients with chronic kidney disease (CKD) are susceptible to vascular calcification and vitamin K deficiency. Matrix gla protein (MGP) is a potent inhibitor of calcification requiring vitamin K for activation. Inactive MGP, i.

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Aims: Concomitant coronary artery disease (CAD) is frequent in transcatheter aortic valve implantation (TAVI) candidates. Despite societal recommendations of performing invasive coronary angiography (ICA) for coronary assessment in the pre-TAVI diagnostic workup, the prognostic value of ICA and beneficial effect of revascularization in these patients remains unclear. We aimed to determine feasibility and outcomes following a strategy of cardiac CT + coronary CT angiography (cCTA) rather than cardiac CT + ICA before TAVI.

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Article Synopsis
  • Coronary computed tomography angiography (CCTA) is useful for analyzing coronary atherosclerotic plaques, but previous studies on the consistency of plaque volume measurements between scans are limited.
  • In a study involving 101 patients, CCTA scans were performed twice with a one-hour interval using identical protocols, and plaque volumes were assessed using semi-automated software.
  • Results showed high correlation for total, non-calcified, and calcified plaques, but lower for low-density non-calcified plaques, with reproducibility influenced by image quality, reconstruction settings, and lesion location, particularly in left anterior descending (LAD) arteries.
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Background: Transcatheter aortic valve replacement (TAVR) has become the standard-of-care treatment for a majority of patients with severe, symptomatic aortic stenosis. The postprocedural antithrombotic therapeutic management is still a topic of debate and could affect the incidence of HALT, a phenomenon which can be assessed by 4-dimensional computed tomography (4DCT).

Trial Design: The NOTION-4 trial is a randomized controlled trial comprising TAVR patients with no indication for oral anticoagulant (OAC) therapy, comparing lifelong single antiplatelet therapy (standard arm) versus early 3-month direct oral anticoagulant (DOAC) therapy followed by single antiplateletet therapy (experimental arm).

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Background: Coronary computed tomography angiography (CCTA) is recommended as the first-line diagnostic imaging modality in low-to-intermediate-risk individuals suspected of stable coronary artery disease (CAD). However, CCTA exposes patients to ionizing radiation and potentially nephrotoxic contrast agents. Invasive coronary angiography is the gold-standard investigation to guide coronary revascularisation strategy; however, invasive procedures incur an inherent risk to the patient.

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Article Synopsis
  • A study examined the relationship between how completely patients with stable angina were revascularized (opened blocked arteries) and their cardiovascular health outcomes, using a method called fractional flow reserve (FFR) to measure artery health.
  • In 900 patients, those who were incompletely revascularized had a significantly higher risk of cardiovascular events, like heart attacks, compared to those who were completely revascularized or had normal FFR readings.
  • The findings suggest that ensuring complete revascularization in patients with critical artery blockages (FFR ≤ 0.80) could lead to better heart health outcomes.
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Background: Some autoimmune diseases carry elevated risk for atherosclerotic cardiovascular disease (ASCVD), yet the underlying mechanism and the influence of traditional risk factors remain unclear.

Objectives: This study sought to determine whether autoimmune diseases independently correlate with coronary atherosclerosis and ASCVD risk and whether traditional cardiovascular risk factors modulate the risk.

Methods: The study included 85,512 patients from the Western Denmark Heart Registry undergoing coronary computed tomography angiography.

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Background: Left atrial appendage occlusion (LAAO) is performed increasingly, but long-term follow-up imaging data are lacking.

Aims: The aim of this study was to evaluate the safety and durability of the Amplatzer Amulet device >4 years after LAAO.

Methods: This was a prospective observational cohort study including 52 patients implanted with the Amplatzer Amulet device at Aarhus University Hospital, Denmark.

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Article Synopsis
  • Coronary CT angiography (CCTA) is a reliable method for diagnosing coronary artery disease and may also help in planning percutaneous coronary interventions (PCI) and stent sizing, though its effectiveness was previously unclear.! -
  • In a study analyzing 65 blood vessels, researchers compared stent sizes determined by CCTA and optical coherence tomography (OCT), finding that CCTA measurements were very close to those of OCT, with a substantial agreement in stent sizing.! -
  • The results indicated that while CCTA generally provides accurate assessments for stent diameter, it overestimated the size in 20% of cases and underestimated it in 27.7%, suggesting it can be a useful tool in PCI planning but not
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Introduction: Based on technical advancements and clinical evidence, transcatheter aortic valve implantation (TAVI) has been widely adopted. New generation TAVI valve platforms are continually being developed. Ideally, new valves should be superior or at least non-inferior regarding efficacy and safety, when compared to best-in-practice contemporary TAVI valves.

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Background: Chronic kidney disease (CKD) is associated with accelerated vascular calcification and increased central systolic blood pressure when measured invasively (invCSBP) relative to cuff-based brachial systolic blood pressure (cuffSBP). The contribution of aortic wall calcification to this phenomenon has not been clarified. We, therefore, examined the effects of aortic calcification on cuffSBP and invCSBP in a cohort of patients representing all stages of CKD.

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Background: Coronary artery fistulas (CAFs) are abnormal communications between the coronary arteries and the heart chambers, arteries, or veins, potentially leading to significant shunting, myocardial ischaemia and heart failure. Computed tomographic (CT) angiography or conventional invasive angiography is the reference standard for the diagnosis of coronary fistulas. The fistula anatomy can become very complex, which makes surgical or interventional planning challenging.

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Background: The association between coronary computed tomography angiography (CTA) derived fractional flow reserve (FFR) and risk of recurrent angina in patients with new onset stable angina pectoris (SAP) and stenosis by CTA is uncertain.

Methods: Multicenter 3-year follow-up study of patients presenting with symptoms suggestive of new onset SAP who underwent first-line CTA evaluation and subsequent standard-of-care treatment. All patients had at least one ≥30 ​% coronary stenosis.

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Article Synopsis
  • The study explores the relationship between reading pressure gradients and wall shear stress in coronary arteries and their impact on atherosclerotic plaque characteristics in patients with chronic coronary conditions.
  • The research involved 105 vessels, revealing that distinct coronary artery disease (CAD) patterns are linked to various plaque risks, with higher pressure gradients correlating to more adverse plaque features.
  • The findings suggest that analyzing pressure gradients and shear stress can help predict plaque stability and risk of complications in patients with significant coronary lesions.*
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Background: Acute aortic dissection causes major morbidities and mortalities. The treatment of choice for type A aortic dissection (TAAD) is emergent surgical intervention. However, surgery per se may be associated with significant risk, in part due to the general surgical challenges, and the inherent hemodynamic- and organ malperfusion effects.

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Background: Coronary magnetic resonance angiography (coronary MRA) is increasingly being considered as a clinically viable method to investigate coronary artery disease (CAD). Accurate determination of the trigger delay to place the acquisition window within the quiescent part of the cardiac cycle is critical for coronary MRA in order to reduce cardiac motion. This is currently reliant on operator-led decision making, which can negatively affect consistency of scan acquisition.

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Background And Aims: Coronary computed tomography angiography (CCTA) can guide downstream preventive treatment and improve patient prognosis, but its use in relation to education level remains unexplored.

Methods: This nationwide register-based cohort study assessed all residents in Denmark between 2008 and 2018 without coronary artery disease (CAD) and 50-80 years of age (n = 1 469 724). Residents were divided according to four levels of education: low, lower-mid, higher-mid, and high.

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Background: Cardiac resynchronization therapy (CRT) improves symptoms, health-related quality of life and long-term survival in patients with systolic heart failure (HF) and shortens QRS duration. However, up to one third of patients attain no measurable clinical benefit from CRT. An important determinant of clinical response is optimal choice in left ventricular (LV) pacing site.

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The coronary vascular volume to left ventricular mass (V/M) ratio assessed by coronary computed tomography angiography (CCTA) is a promising new parameter to investigate the relation of coronary vasculature to the myocardium supplied. It is hypothesized that hypertension decreases the ratio between coronary volume and myocardial mass by way of myocardial hypertrophy, which could explain the detected abnormal myocardial perfusion reserve reported in patients with hypertension. Individuals enrolled in the multicenter ADVANCE (Assessing Diagnostic Value of Noninvasive FFRCT in Coronary Care) registry who underwent clinically indicated CCTA for analysis of suspected coronary artery disease with known hypertension status were included in current analysis.

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