Implantable continuous-flow total artificial heart for newborns and small pediatric patients: First report of working model.

Objective: The need for safe and reliable mechanical circulatory support (MCS) for smaller children with severe heart failure (HF) is well defined. More specifically, in pediatric patients with advanced congenital HF, there is no implantable total artificial heart (TAH) device available for small patients. Herein, we report the development of the infant continuous-flow total artificial heart (I-CFTAH), a fully implantable in infants and newborns.

A less-invasive left atrial assist device concept for diastolic heart failure: First in vitro and in vivo assessment.

Objective: A less-invasive left atrial assist device (LAADx) is a novel and implantable, extracardiac blood pump concept, intended for the treatment of diastolic heart failure, represented by heart failure with preserved ejection fraction.

Methods: A mixed-flow pump was used as the working LAADx model. Its performance was evaluated at 3 speeds, using an in vitro pulsatile mock circulatory loop, with a pneumatic pump that can simulate diastolic heart failure conditions by adjusting the diastolic drive pressure.

To eliminate police or redirect police funds? The impact of framing on public support for defunding the police.

Objectives: Previous research and public polls demonstrate the public has varying levels of support for Defund the Police (DTP). However, much of these results assess how individuals about DTP rather than how they it. Additionally, the literature fails to consider the role of these definitions and framing in individuals' assessments of DTP.

Improving hydraulic performance of the left atrial assist device using computational fluid dynamics.

Background: The left atrial assist device (LAAD) is a novel continuous-flow pump designed to treat patients with heart failure with preserved ejection fraction, a growing type of heart failure, but with limited device-treatment options. The LAAD is implanted in the mitral plane and pumps blood from the left atrium into the left ventricle. The purpose of this study was to refine the initial design of the LAAD, using results from computational fluid dynamics (CFD) analyses to inform changes that could improve hydraulic performance and flow patterns within the LAAD.

The Relationship Between Lockdowns and Video Game Playtime: Multilevel Time-Series Analysis Using Massive-Scale Data Telemetry.

Background: COVID-19 led governments worldwide to enact a variety of containment and closure policies. Substantial attention has been directed toward the idea that these public health measures may have unanticipated negative side effects. One proposed effect relates to video games.