Publications by authors named "Volz S"

Background: Intravascular ultrasound (IVUS) guides deferral decision-making regarding the left main coronary artery (LMCA) and improves outcomes. Further studies regarding coronary physiology to guide revascularization in the LMCA are needed. Our aim was to evaluate the outcome of LMCA deferral using IVUS or coronary physiology via instantaneous wave-free ratio (iFR) or fractional flow reserve (FFR).

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Background: Transcatheter aortic valve implantation (TAVI) is expanding to younger patients, and the management of valve failure is a growing clinical problem. The transcatheter heart valve (THV) of choice for redo-TAVI is a complex decision, and first reports have examined the use of the Sapien 3™ THV (Edwards Lifesciences; Irvine, CA, USA) in failed Evolut™ (Medtronic, Minneapolis, MN, USA) THV. However, several different technical approaches may be worth consideration, and the subject remains a matter of debate.

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The work unravels the previously unexplored atomic-scale mechanism involving the interaction of phonons with crystal homointerfaces. Silicon nanowires with engineered isotopic content and crystal phases were chosen for this investigation. Crystal polytypism, manifested by the presence of both diamond cubic and rhombohedral phases within the same nanowire, provided a testbed to study the impact of phase homointerfaces on phonon transport.

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Background: Ultrasound renal sympathetic denervation (uRDN) reduces blood pressure (BP) in the absence and presence of antihypertensive treatment at 2 months. Beyond 3 years, there is a lack of follow-up data. This study investigated the long-term safety and efficacy of uRDN.

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  • The Tesla valve aids in controlling fluid flow in tiny systems, inspiring designs for modern electronic and thermal devices using fluid-like principles.
  • Unlike fluid systems, thermal rectification of phonons (energy carriers in solids) is more complex due to fewer interactions and less liquid-like behavior.
  • Recent studies on phonon behavior in graphite led to a micrometer-scale Tesla valve, achieving a 15.2% difference in heat conduction at low temperatures, pushing forward thermal management in small electronic devices.
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Environmental pollutants capable of interfering with the thyroid hormone (TH) system increasingly raise concern for both human and environmental health. Recently, resorcinol has received attention as a compound of concern due to its endocrine disrupting properties. It is a known inhibitor of thyroperoxidase (TPO), an enzyme required in TH synthesis, and therapeutic use of resorcinol exposure has led to hypothyroidism in humans.

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  • * Out of 9806 TAVR patients analyzed from 2008 to 2022, 566 required coronary angiography afterward, with younger age and more extensive coronary disease linked to higher risks.
  • * The findings suggest that while the need for coronary angiography post-TAVR is low, procedural complexity increases with certain valve types and in patients with previous valve replacements, emphasizing the need for good coronary access in future TAVR procedures.
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Objective And Background: The goals of this project were to improve our understanding of chronic regulatory focus constructs and to provide researchers with a measure that adequately assesses the constructs, can distinguish individual differences effectively across the range of the constructs, and is appropriate for use in diverse populations.

Method: Employing best practices in construct validation, we developed the International Personality Item Pool Regulatory Focus Scale (IPIP-RFS). Utilizing 14 samples (N = 4867), we established substantive (via expert ratings and regulatory focus literature), structural (via factor analysis, item response theory, and measurement invariance), and external (via convergent, discriminant, and predictive associations) validity.

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Due to the minimization and integration of micro/nano-devices, the high density of interfaces becomes a significant challenge in various applications. Phonon modes at interface resulting from the mismatch between inhomogeneous functional counterparts are crucial for interfacial thermal transport and overall thermal management of micro/nano-devices, making it a topic of great research interest recently. Here, we comprehensively review the recent advances on the theoretical and experimental investigations of interfacial phonon mode and its impact on interfacial thermal transport.

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Structured clinical risk assessments represent a preferred means of assessing levels of aggression risk at different times and in different individuals. Increasing attention has been given to capturing protective factors, with sound risk assessment critical to high-secure forensic mental health care. The aim was to assess the predictive value of the HCR-20 for aggression risk and the long-term care pilot version of the SAPROF (the SAPROF-LC-pilot) in a high-secure forensic mental health inpatient population and to determine the incremental value of protective over risk factors.

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We experimentally demonstrate the enhancement of the far-field thermal radiation between two nonabsorbent Si microplates coated with energy-absorbent silicon dioxide (SiO_{2}) nanolayers supporting the propagation of surface phonon polaritons. By measuring the radiative thermal conductance between two coated Si plates, we find that its values are twice those obtained without the SiO_{2} coating. This twofold increase results from the hybridization of polaritons with guided modes inside Si and is well predicted by fluctuational electrodynamics and an analytical model based on a two-dimensional density of polariton states.

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Thermal conductivity is a critical material property in numerous applications, such as those related to thermoelectric devices and heat dissipation. Effectively modulating thermal conductivity has become a great concern in the field of heat conduction. Here, a quantum modulation strategy is proposed to modulate the thermal conductivity/heat flux by exciting targeted phonons.

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  • Takotsubo syndrome (TS) is a heart condition that imitates a heart attack, often triggered by stress, leading to weakened heart muscles; the study aimed to explore how different medications impact mortality rates in TS patients.
  • The analysis included 1,724 TS patients from the SWEDEHEART registry, predominantly older women, with a significant portion presenting types of acute coronary syndrome and most showing non-obstructive coronary artery disease.
  • Findings indicated that certain medications, like intravenous inotropes and diuretics, increased 30-day mortality, while long-term use of angiotensin-converting enzyme inhibitors and statins improved survival rates.
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  • A new fluid-filled pressure wire, Wirecath, was tested to see if it could reduce measurement errors caused by hydrostatic pressure in the coronary system.
  • The study involved 45 patients undergoing coronary angiography, comparing Wirecath with a conventional pressure wire and measuring their effectiveness and safety.
  • Results showed that, while mean pressures differed significantly between the two wires, the Wirecath wire accurately avoided hydrostatic errors and was deemed safe for use.
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  • This study examines out-of-hospital cardiac arrests (OHCA) in young adults (ages 16-49) in Sweden from 1990 to 2020, focusing on survival rates and causes of cardiac arrests.
  • Over the 30-year period, there was a notable annual increase of 5.9% in 30-day survival rates without decline in neurological function, despite rising cases related to overdoses and suicides.
  • By 2020, an impressive 88% of OHCA cases received bystander CPR, while EMS response times increased from 6 to 10 minutes, indicating both improvement in immediate care and challenges in emergency response.
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Bisphenols are industrial chemicals that are produced in large quantities and have been detected in all parts of the environment as well as in a multitude of different organisms including humans and fish. Several bisphenols, such as bisphenol A (BPA) and bisphenol F, have been shown to disrupt endocrine systems thereby affecting development and reproduction. While numerous studies investigated the effect of bisphenols on estrogen signaling, their impact on the thyroid hormone system (THS), which is vital for neurodevelopment including sensory development, has been explored to a lesser extent.

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The newly synthesized BeN monolayer has introduced a novel group of 2D materials called nitrogen-rich 2D materials. In the present study, the anisotropic mechanical and thermal properties of three members of this group, BeN, MgN, and PtN, are investigated. To this end, a machine learning-based interatomic potential (MLIP) is developed and utilized in classical molecular dynamics (MD) simulations.

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In recent times, the unique collective transport physics of phonon hydrodynamics motivates theoreticians and experimentalists to explore it in micro- and nanoscale and at elevated temperatures. Graphitic materials have been predicted to facilitate hydrodynamic heat transport with their intrinsically strong normal scattering. However, owing to the experimental difficulties and vague theoretical understanding, the observation of phonon Poiseuille flow in graphitic systems remains challenging.

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Research suggests that people differ more in their ability to lie than in their ability to detect lies. However, because studies have not treated senders and messages as separate entities, it is unclear whether some senders are generally more transparent than others or whether individual messages differ in their transparency of veracity regardless of senders. Variance attributable to judges, senders, and messages was estimated simultaneously using multiple messages from each sender (totaling more than 45,000 judgments).

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Background And Aims: Previous studies reported divergent results on whether metabolically healthy obesity is associated with increased coronary artery calcium and carotid plaques. We investigated this in a cross-sectional fashion in a large, well-defined, middle-aged population using coronary CT angiography (CCTA) and carotid ultrasound.

Methods: In the SCAPIS study (50-65 years, 51% female), CCTA and carotid artery ultrasound were performed in 23,674 individuals without clinical atherosclerotic disease.

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Recent research has examined psychological factors that forestalled declines in physical activity (PA) during the early stages of the COVID-19 pandemic. Surprisingly, there has been limited evidence of an association between intrinsic motivation (IM) and PA. We reasoned that IM may have not predicted PA because COVID-19 restrictions limited opportunities to engage in exercise in ways that produced positive affective experiences (i.

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Objective: Psychological network analysis was used to evaluate the relations between beliefs about cigarette smoking in current smokers with and without a recent quit attempt and determine if these networks differed in global strength (how strongly beliefs are related) or global structure (which beliefs are related).

Design: Using two publicly available datasets, the California Smokers' Cohort (CSC;  = 933) and Wave 1 of the Population Assessment of Tobacco and Health (PATH;  = 7855), we evaluated differences in global strength and global structure of the beliefs held by current smokers with and without a recent quit attempt.

Main Outcome Measures: Strength and structure of networks generated for current smokers with and without a recent quit attempt.

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Article Synopsis
  • The study investigated the clinical characteristics and outcomes of patients with pre-existing cardiovascular conditions who suffered an out-of-hospital cardiac arrest (OHCA) using a large Swedish registry from 2010-2020.
  • Researchers identified various cardiovascular conditions like hypertension, heart failure, and diabetes, and analyzed their impact on survival rates and neurological outcomes.
  • Results showed that patients with the combination of hypertension and heart failure had the lowest survival rates, and earlier onset of hypertension correlated with a shorter time to cardiac arrest.
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The heat transport of surface phonon-polaritons propagating along a polar uniaxial anisotropic nanofilm is studied for different orientations of its optical axis, film thicknesses, and temperatures. For an hBN nanofilm, it is shown that i) the propagation of polaritons can be described in terms of even and odd modes that generalize the transverse magnetic and transverse electrical ones that typically appear in isotropic films. ii) The frequency spectrum of polaritons can efficiently be tuned with the angle between the film optical axis and their propagation direction.

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Background The use of percutaneous coronary intervention (PCI) to treat unprotected left main coronary artery disease has expanded rapidly in the past decade. We aimed to describe nationwide trends in clinical practice and outcomes after PCI for left main coronary artery disease. Methods and Results Patients (n=4085) enrolled in the SCAAR (Swedish Coronary Angiography and Angioplasty Registry) as undergoing PCI for left main coronary artery disease from 2005 to 2017 were included.

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