Clinical Utility of Systolic Left Ventricular Ejection Fraction in Atrial Fibrillation: Role of Prospective ECG-Triggered Cardiac CT.

Background: The assessment of left ventricular (LV) systolic function and quantification of LV ejection fraction (EF) in patients with atrial fibrillation (AF) can be difficult. We previously demonstrated that LV volume changes over the 100 ms of systole (LVEF) can be used as a measure of LV systolic function.

Objective: We sought to evaluate the applicability of LVEF in AF patients.

Metal-Coordinated Polymer-Inorganic Hybrids: Synthesis, Properties, and Application.

This review examines the recent advancements and unique properties of polymer-inorganic hybrid materials formed through coordination bonding (Class II hybrids), which enable enhanced functionality and stability across various applications. Here, we categorize these materials based on properties gained through complexation, focusing on electrical conductivity, thermal stability, photophysical characteristics, catalytic activity, and nanoscale self-assembly. Two major synthetic approaches to making these hybrids include homogeneous and heterogeneous methods, each with distinct tradeoffs: Homogeneous synthesis is straightforward but requires favorable mixing between inorganic and polymer species, which are predominantly water-soluble complexes.

Synergistic Interaction of Chloroquine with Semipolar Extract Against : Histopathological and Immunological Studies in a Mouse Model.

Background: Malaria parasites have gradually developed resistance to commonly used antimalarial drugs. For decades, chloroquine was the most widely used drug to eradicate malaria. However, with the spread of chloroquine resistance, many countries have adopted combination therapies that utilize two drugs acting synergistically instead of monotherapy.

The Effects of Chain Conformation and Nanostructure on the Dielectric Properties of Polymers.

The dielectric properties of polymers play a pivotal role in the development of advanced materials for energy storage, electronics, and insulation. This review comprehensively explores the critical relationship between polymer chain conformation, nanostructure, and dielectric properties, focusing on parameters such as dielectric constant, dielectric loss, and dielectric breakdown strength. It highlights how factors like chain rigidity, free volume, molecular alignment, and interfacial effects significantly influence dielectric performance.

Cochlear reimplantation rate, causes, and outcomes: a multicenter study.

Objective: The current study aimed to evaluate cochlear reimplantation rate, causes, and audiological outcomes in a large group of patients in a multicenter study.

Methods: This retrospective study was conducted on patients with cochlear reimplantation surgeries between 2000 and 2022 in five academic referral centers. The rate and reasons for cochlear reimplantation surgeries were evaluated.