Publications by authors named "Krieger E"

We investigated and compared mortality rates and risk factors for pre-pandemic and pandemic all-cause mortality in a population-based cohort of men and women in Arkhangelsk, Russia. A prospective cohort study enrolled 2,324 participants aged 35 to 69 years between 2015 and 2017. All participants were followed up for all-cause deaths using the mortality registry.

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Background: Patients with systemic right ventricle (SRV), either d-transposition of the great arteries following an atrial switch procedure or congenitally corrected transposition of the great arteries, develop severe right ventricular dysfunction, prompting appropriate medical therapy. However, the efficacy of beta-blockers and angiotensin receptor blockers or angiotensin-converting enzyme inhibitors (ACEI) in SRV patients is unproven.

Objectives: The objective of this study was to determine the effects of ACEI/ARB and beta-blockers on outcomes in SRV patients after accounting for likely cofounders affecting their use.

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  • - Patients with repaired tetralogy of Fallot are prone to ventricular tachycardia and sudden cardiac death, with most arrhythmias linked to specific slow-conducting areas in the heart known as SCAIs.
  • - The study compared a "prophylactic" approach, which involved ablating SCAIs regardless of whether VT was induced, to a "historical" approach that used VT induction to guide treatment, focusing on reducing complications and the need for implantable cardioverter-defibrillators (ICDs).
  • - Results showed that patients who underwent prophylactic ablation had no major arrhythmic events over a median follow-up of 21 months, whereas 29% of the historical group
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  • A Phase II clinical trial examined the effects of intravenous vitamin C on patients receiving hematopoietic stem cell transplants to reduce nonrelapse mortality (NRM).
  • Patients (55 total) were given IV vitamin C for 14 days, which corrected their initial vitamin C deficiency and showed a trend towards lower NRM (11%) compared to historical controls (25%).
  • The study suggests that vitamin C repletion is safe and may improve survival rates (82% vs. 62%), but further randomized trials are necessary to validate these findings.
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  • * A survey involving 1,089 unvaccinated participants revealed that 59.7% had experienced COVID-19, with 47.1% of those exhibiting symptoms and 8.6% hospitalized, while 96.2% of asymptomatic cases were not reported.
  • * Findings indicate a link between older age and poor self-rated health with increased COVID-19 severity and hospitalization, emphasizing the need for better surveillance to detect asymptomatic infections.
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A 38-year-old patient with a prosthetic aortic valve had weeks of fever and respiratory symptoms. Although endocarditis was suspected early, numerous blood cultures and echocardiograms failed to confirm the diagnosis. Key questions were: What is a broad differential diagnosis for the above symptoms? What is unique about diagnosing prosthetic valve endocarditis compared with native valve endocarditis? What other imaging modalities are useful for diagnosing prosthetic valve endocarditis when initial echocardiographic evaluation is negative? What organisms are classically implicated in "culture negative" infective endocarditis? Serial blood cultures and multimodal imaging, including cardiac positron emission computed tomography with 18F-fluorodeoxyglucose, lead to a diagnosis of prosthetic valve endocarditis with a HACEK () pathogen.

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  • Patients with transposition of the great arteries (TGA) and systemic right ventricle face serious heart-related risks, and researchers sought to determine if specific invasive hemodynamic measures can predict outcomes.
  • The study included 242 adults who underwent cardiac catheterization from 1994 to 2020, analyzing various hemodynamic parameters over an average follow-up period of 11.4 years.
  • Results indicated that a low aortic pulsatility index (<1.5) strongly predicts negative outcomes such as death or the need for heart transplantation, with the cold/wet hemodynamic profile presenting the highest associated risk.
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  • COVID-19 significantly affects coagulation in adult patients with congenital heart disease (ACHD), making them more susceptible to thromboembolic (TE) and bleeding complications.
  • In a study from May 2020 to November 2021 involving nearly 2,000 ACHD patients, 1.5% experienced severe TE or bleeding events, which were linked to higher mortality rates and more advanced health conditions.
  • Key risk factors for these complications included prior anticoagulation treatment, incidents of cardiac injury, and severity of the COVID-19 infection, with logistic regression confirming their independent associations with TE and bleeding risks.
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Distributed clean, reliable energy resources like solar plus battery storage (solar + storage) can reduce harmful emissions while supporting resilience. Solar + storage-powered resilience hubs provide energy for critical services during disasters while increasing human adaptive capacity year round. We studied where utility rates, local climate, and historical injustice make solar + storage resilience hubs more valuable and more challenging.

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Background: Beta-blockers are commonly used drugs during pregnancy, especially in women with heart disease, and are regarded as relatively safe although evidence is sparse. Differences between beta-blockers are not well-studied.

Methods: In the Registry of Pregnancy And Cardiac disease (ROPAC, n = 5739), a prospective global registry of pregnancies in women with structural heart disease, perinatal outcomes (small for gestational age (SGA), birth weight, neonatal congenital heart disease (nCHD) and perinatal mortality) were compared between women with and without beta-blocker exposure, and between different beta-blockers.

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Killer immunoglobulin-like receptor (KIR) and KIR-ligand (KIRL) interactions play an important role in natural killer cell-mediated effects after haematopoietic stem cell transplantation (HCT). Previous work has shown that accounting for known KIR-KIRL interactions may identify donors with optimal NK cell-mediated alloreactivity in the adult transplant setting. Paediatric acute leukaemia patients were retrospectively analysed, and KIR-KIRL combinations and maximal inhibitory KIR ligand (IM-KIR) scores were determined.

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Endocrine disrupting chemicals (EDCs) possess the capability to interfere with the endocrine system by binding to hormone receptors, for example on immune cells. Specific effects have already been described for individual substances, but the impact of exposure to chemical mixtures during pregnancy on maternal immune regulation, placentation and fetal development is not known. In this study, we aimed to investigate the combined effects of two widespread EDCs, bisphenol A (BPA) and benzophenone-3 (BP-3), at allowed concentrations on crucial pregnancy processes such as implantation, placentation, uterine immune cell populations and fetal growth.

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  • * This experiment produced 2.05 MJ of laser energy, resulting in 3.1 MJ of total fusion yield, which exceeds the Lawson criterion for ignition, demonstrating a key milestone in fusion research.
  • * The report details the advancements in target design, laser technology, and experimental methods that contributed to this historic achievement, validating over five decades of research in laboratory fusion.
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  • Over the past 40 years since the Clean Air Act, overall air pollution emissions have significantly decreased, but disparities in exposure still exist among different racial/ethnic and socioeconomic groups in the U.S.
  • The study examines changes in emissions from various sources, including industry, energy, and transportation, and highlights that these changes are influenced by county demographics using advanced statistical models.
  • Findings reveal that counties with higher median family incomes tend to experience greater reductions in emissions across several pollution sources compared to poorer counties, indicating that socioeconomic status plays a critical role in air quality improvements.
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  • In acute myeloid leukemia (AML), the interactions between donor KIR and recipient HLA may affect the effectiveness of stem cell transplants, but findings on their impact have been inconsistent, particularly in matched unrelated donor scenarios.
  • A study involving 2025 AML patients found specific KIR/HLA pairs, notably donor-2DL2+/recipient-HLA-C1+, associated with lower relapse rates, while certain KIR genotypes showed a mix of benefits and risks related to relapse.
  • Ultimately, the research did not yield conclusive evidence to support KIR-based strategies for selecting donors in AML, as results were not validated in a separate patient cohort.
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This document discusses preprocedural planning for transcatheter aortic valve replacement, evaluating the imaging modalities used in initial imaging for preprocedure planning under two variants 1) Preintervention planning for transcatheter aortic valve replacement: assessment of aortic root; and 2) Preintervention planning for transcatheter aortic valve replacement: assessment of supravalvular aorta and vascular access. US echocardiography transesophageal, MRI heart function and morphology without and with IV contrast, MRI heart function and morphology without IV contrast and CT heart function and morphology with IV contrast are usually appropriate for assessment of aortic root. CTA chest with IV contrast, CTA abdomen and pelvis with IV contrast, CTA chest abdomen pelvis with IV contrast are usually appropriate for assessment of supravalvular aorta and vascular access.

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Unlabelled: Intravenous (IV) vitamin C improves organ function and reduces inflammation in sepsis, an inflammatory state like the post-hematopoietic stem cell transplant (SCT) milieu. The safety and efficacy of parenteral vitamin C after allogeneic hematopoietic stem cell transplant (HSCT) were evaluated in a phase I/II trial and clinical outcomes compared with a propensity score - matched historical control.

Methods: Patients with advanced hematologic malignancies were enrolled in a phase 2 clinical trial, receiving IV vitamin C, 50mg/kg/d, divided into 3 doses given on days 1-14 after HSCT, followed by 500 mg bid oral from day 15 until 6 months post-SCT.

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The industry's transition from three-dimensional (3D) glasses to virtual reality (VR) headsets has left modelers stranded without hardware supply, since walking around and waving arms in a virtual world is a great experience but also very tiring when doing time-intensive modeling work. We present a novel software implementation that uses a VR headset while sitting at a desk in front of the normal screen, which is beamed into the virtual reality together with keyboard, mouse, and chair using the headset's cameras and an extra tracker attached to the seat-back. Compared to 3D glasses, this yields a comparably relaxing but much more immersive workplace and provides additional possibilities such as taking molecules into one's hands, standing up, and walking or teleporting through the models.

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Background And Aims: For patients with congenitally corrected transposition of the great arteries (ccTGA), factors associated with progression to end-stage congestive heart failure (CHF) remain largely unclear.

Methods: This multicentre, retrospective cohort study included adults with ccTGA seen at a congenital heart disease centre. Clinical data from initial and most recent visits were obtained.

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Objectives: Immune recovery following haematopoietic cell transplantation (HCT) functions as a dynamical system. Reducing the duration of intense immune suppression and augmenting antigen presentation has the potential to optimise T-cell reconstitution, potentially influencing long-term outcomes.

Methods: Based on donor-derived T-cell recovery, 26 patients were adaptively randomised between mycophenolate mofetil (MMF) administered for 30-day post-transplant with filgrastim for cytokine support (MMF30 arm,  = 11), or MMF given for 15 days with sargramostim (MMF15 arm,  = 15).

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  • An increasing number of adult Fontan patients are needing heart or combined heart-liver transplants, but there is limited data on their outcomes and ideal referral timing.
  • This study analyzed 131 adult Fontan patients who underwent transplantation between 1995 and 2021, finding a 79% survival rate at one year and 66% at five years post-transplant, with improved outcomes noted in patients transplanted after 2010.
  • Late referrals and certain health indicators like poor functional status and specific vascular issues were linked to lower survival rates, highlighting the importance of timely evaluations.
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  • - The study investigates the effects of Fontan-associated liver disease (FALD) on post-transplant outcomes, specifically looking at heart transplant (HT) versus combined heart-liver transplant (CHLT) in adult Fontan patients.
  • - Results showed that CHLT patients were generally older and had higher FALD scores, but they exhibited better survival rates compared to HT, particularly in those with higher FALD scores.
  • - The research indicates a correlation between higher FALD scores and increased mortality post-transplant, suggesting that CHLT may offer improved survival outcomes for patients with significant liver disease.
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Background: The published estimates of SARS-CoV-2 seroprevalence in Russia are few. The study aimed to assess the SARS-CoV-2 seroprevalence in Arkhangelsk (Northwest Russia), in a year after the start of the pandemic, to evaluate the population adherence to non-pharmaceutical interventions (NPIs), and to investigate characteristics associated with COVID-19 seropositive status.

Methods: We conducted a SARS-CoV-2 seroprevalence study between 24 February and 30 June 2021 involving 1332 adults aged 40-74 years.

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