Publications by authors named "Pieper K"

Background: Decisions about stroke prevention strategies in atrial fibrillation (AF) typically balance thromboembolism reduction against increased bleeding from oral anticoagulation therapy (OAC). When determining eligibility for OAC, guidelines recommend calculation of thromboembolic event rates using a validated score such as CHA2DS2-VASc. In contrast, routine calculation of bleeding scores is not recommended, in part because many patient factors associated with an increased risk of bleeding are associated with an even larger increased risk of ischemic stroke.

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  • The study aimed to compare stroke prevention strategies, management of comorbidities, and clinical outcomes in patients with atrial fibrillation (AF) across different healthcare specialties: cardiology, primary care, and others.
  • Among 52,011 patients, those in cardiology were more likely to receive non-vitamin K oral anticoagulants (NOACs) compared to those in primary care or other specialties, while comorbidity management was similar across all groups.
  • Patients receiving care outside of cardiology faced higher risks for non-cardiovascular mortality, major bleeding, and worsening heart failure, indicating a need for improved AF management in these settings.
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  • Direct oral anticoagulants are commonly used for preventing strokes in patients with atrial fibrillation and flutter, but concerns about bleeding limit their use; milvexian is a new drug that might work as well with less bleeding risk.
  • The LIBREXIA AF trial is a large global study comparing milvexian to apixaban, enrolling 15,500 participants to assess if milvexian can prevent strokes without increasing bleeding events significantly.
  • The results from this study aim to clarify the efficacy and safety of milvexian compared to apixaban over a projected 4-year follow-up period.
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Background: The extent to which differences in results from Apixaban for Reduction in Stroke and Other Thromboembolic Events in Atrial Fibrillation (ARISTOTLE) and Rivaroxaban Once Daily Oral Direct Factor Xa Inhibition Compared with Vitamin K Antagonism for Prevention of Stroke and Embolism Trial (ROCKET) atrial fibrillation (AF)-the landmark trials for the approval of apixaban and rivaroxaban, respectively, for non-valvular AF-were influenced by differences in their protocols is debated. The potential influence of selection criteria on trial results was assessed by emulating these trials in data from the Global Anticoagulant Registry in the Field (GARFIELD)-AF registry.

Methods: Vitamin K antagonist (VKA) and non-vitamin K oral antagonist (NOAC) users from GARFIELD-AF were selected according to eligibility for the original ARISTOTLE or ROCKET AF trials.

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Unlabelled: While the co-existence of comammox with canonical nitrifiers is well documented in diverse ecosystems, there is still a dearth of knowledge about the mechanisms underpinning their interactions. Understanding these interaction mechanisms is important as they may play a critical role in governing nitrogen biotransformation in natural and engineered ecosystems. In this study, we tested the ability of two environmentally relevant factors (nitrogen source and availability) to shape interactions between strict ammonia and nitrite-oxidizing bacteria and comammox in continuous flow column reactors.

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Disaster recovery poses unique challenges for residents reliant on private wells. Flooding events are drivers of microbial contamination in well water, but the relationship observed between flooding and contamination varies substantially. Here, we investigate the performance of different flood boundaries─the FEMA 100 year flood hazard boundary, height above nearest drainage-derived inundation extents, and satellite-derived extents from the Dartmouth Flood Observatory─in their ability to identify well water contamination following Hurricane Florence.

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Background: Peer review is essential to the advancement of knowledge. However, training on how to conduct peer review is limited, unorganized, and not well studied. Thus, we sought to determine if a structured mentored peer-review program improved peer review training as measured by multiple quantitative and qualitative assessments.

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This study presents a measure to assess dental anxiety in children. To gain a better understanding of children's fear and anxiety in the dental setting, instruments to gather data with high quality are necessary and missing, especially in the German language. Based upon the facet approach, the Questionnaire to Assess Dental Anxiety in Children (QADA-C) includes items concerning anxiety reactions in thinking, behavior, and feelings in the form of short statements.

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Polypropionates, characterized by their alternating sequence of stereocenters bearing methyl- and hydroxy-groups, are structurally diverse natural products of utmost importance. Herein, we introduce a novel concept approach towards polypropionate synthesis featuring a diastereodivergent reductive epoxide-opening as a key step. Readily available and stereochemically uniform trisubstituted sec-glycidols serve as branching points for the highly selective synthesis of all isomers of polypropionate building blocks with three or more consecutive stereocenters.

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Background: Guidelines for patients with atrial fibrillation (AF) at high thromboembolic risk recommend oral anticoagulants (OACs) for preventing stroke and systemic embolism (SE). The reasons for guideline non-adherence are still unclear.

Aim: The aim is to identify clinical, demographic and non-patient characteristics associated with withholding OAC in patients with AF at high stroke risk.

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Article Synopsis
  • The study compares outcomes of rhythm control versus rate control in patients with recent onset atrial fibrillation, using data from the GARFIELD-AF registry.
  • Of the 45,382 patients, 52.6% received rhythm control and were generally younger and had fewer prior stroke or embolism incidents compared to the rate control group.
  • Results showed significantly lower risks of all-cause mortality and non-haemorrhagic stroke for those who underwent early rhythm control, highlighting its potential benefits for patient outcomes.
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Background: Economically developed countries continue to find that venous thromboembolism (VTE) is a major cause of morbidity and mortality.

Objective: To compare baseline risk profiles and patient workflow patterns between the United States (U.S.

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Although substantial progress has been made in the pathophysiology and management of the post-thrombotic syndrome (PTS), several aspects still need clarification. Among them, the incidence and severity of PTS in the real world, the risk factors for its development, the value of patient's self-evaluation, and the ability to identify patients at risk for severe PTS. Eligible participants (n = 1107) with proximal deep-vein thrombosis (DVT) from the global GARFIELD-VTE registry underwent conventional physician's evaluation for PTS 36 months after diagnosis of their DVT using the Villalta score.

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Background: Oral anticoagulants (OAC) are underutilized in older patients with atrial fibrillation, despite proven clinical benefits. Our objective was to investigate baseline characteristics, treatment patterns, and impact of anticoagulation upon clinical outcomes with respect to age.

Methods: Adults with newly diagnosed atrial fibrillation were recruited into the prospective observational registry, GARFIELD-AF, and followed up for 24 months.

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Background: Sugar intake is a major nutritional factor in the development of dental caries. To further clarify its contribution to oral health-related diseases, population-based investigations are recommended. To facilitate economic and reliable assessment of sugar intake, a short form of the approved Marburg Sugar Index (MSI) was developed.

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Background: Many patients with atrial fibrillation suffer from comorbid vascular disease. The comparative efficacy and safety of different types of oral anticoagulation (OAC) in this patient group have not been widely studied.

Methods: Adults with newly diagnosed atrial fibrillation were recruited into the prospective observational registry, GARFIELD-AF, and followed for 24 months.

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Background: Antithrombotic treatment may improve the disease course in non-critically ill, symptomatic COVID-19 outpatients.

Methods: We performed an individual patient-level analysis of the OVID and ETHIC randomized controlled trials, which compared enoxaparin thromboprophylaxis for either 14 (OVID) or 21 days (ETHIC) vs. no thromboprophylaxis for outpatients with symptomatic COVID-19 and at least one additional risk factor.

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Background: An unmet need exists to reliably predict the risk of intracranial hemorrhage (ICH) in patients with atrial fibrillation (AF) treated with oral anticoagulants (OACs).

Hypothesis: An externally validated model improves ICH risk stratification.

Methods: Independent factors associated with ICH were identified by Cox proportional hazard modeling, using pooled data from the GARFIELD-AF (Global Anticoagulant Registry in the FIELD-Atrial Fibrillation) and ORBIT-AF (Outcomes Registry for Better Informed Treatment of Atrial Fibrillation) registries.

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  • This study investigates how diabetes mellitus (DM) affects the management and outcomes of patients with newly diagnosed atrial fibrillation (AF) and evaluates the impact of oral anticoagulation (OAC) on these patients.
  • The research analyzed data from over 52,000 patients in the GARFIELD-AF registry, comparing those with DM and those without, while focusing on how OAC use influenced their mortality and stroke risks.
  • Findings showed that both DM and non-DM patients experienced lower risks of death and stroke with OAC, while patients with insulin-requiring DM saw significant benefits from OAC usage, despite an increased risk of major bleeding.*
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Aims: This study aimed to identify relationships in recently diagnosed atrial fibrillation (AF) patients with respect to anticoagulation status, use of guideline-directed medical therapy (GDMT) for comorbid cardiovascular conditions (co-GDMT), and clinical outcomes. The Global Anticoagulant Registry in the FIELD (GARFIELD)-AF is a prospective, international registry of patients with recently diagnosed non-valvular AF at risk of stroke (NCT01090362).

Methods And Results: Guideline-directed medical therapy was defined according to the European Society of Cardiology guidelines.

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Objective: There is a substantial incidence of stroke in patients with atrial fibrillation (AF) not receiving anticoagulation. The reasons for not receiving anticoagulation are generally attributed to clinician's choice, however, a proportion of AF patients refuse anticoagulation. The aim of our study was to investigate factors associated with patient refusal of anticoagulation and the clinical outcomes in these patients.

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