A major challenge in mapping atrial fibrillation (AF) to guide ablation is that it unclear what resolution required map potential regions of interest such as those microanatomic reentries revealed by optical ex-vivo human hearts (fig. A). The goal the study was define electrode configurations can identify targets specific EGM traces generated during conduction through common path AF reentry. We...

Abstract Space debris have become exceedingly dangerous over the years as number of objects in orbit continues to increase. Active removal (ADR) missions gained significant interest effective means mitigating risk collision between space. This study focuses on developing a multi-ADR mission that utilizes controlled reentry and deorbiting. The comprises two spacecraft: Servicer brings low altitu...

Over the past two decades, recidivism rates have remained relatively stable, leading practitioners to explore innovative reentry solutions. One model, based on concept of peer mentorship, has received renewed attention. Unfortunately, little is known about which characteristics make mentors most effective in a prison setting. This study uses participant observation and semi-structured interview...

Aiming at the sensitivity to initial value and long computation time spent on iteration and programming the reference trajectory in reentry trajectory optimization for hypersonic vehicles, we propose a trajectory programming algorithm, which is based on drag acceleration profile. First of all, models of motion in reentry process of vehicle are built and an independent variable is introduced for...

BACKGROUND #ENTITYSTARTX02014; Sometime, it's difficult to distinguish the electrophysiological mechanism of some tachycardia, and so, influencing the efficacy and safety of ablation operation. Therefore, it's helpful to analysis some tachycardia in particular mechanism, as in this case. METHODS AND RESULTS #ENTITYSTARTX02014; A 49 years old Chinese male patient had a history of paroxysmal pa...

To evaluate the role of perinodal tissue in the genesis of atrioventricular (AV) nodal reentry, echo beats were induced by programmed stimulation in nine superfused rabbit atrial-atrioventricular nodal preparations. In these preparations, extracellular bipolar electrograms were recorded simultaneously from the crista terminalis, interatrial septum arid His bundle, along with microelectrode acti...

Each year, more than 10 million people enter US jails, most returning home within a few weeks. Because jails concentrate people with infectious and chronic diseases, substance abuse, and mental health problems, and reentry policies often exacerbate these problems, the experiences of people leaving jail may contribute to health inequities in the low-income communities to which they return. Our s...

Reentry is the most common mechanism for arrhythmia in patients treated in the electrophysiology laboratory. Mapping and defining the exact circuit to then allow targeting an ideal site for ablation is challenging. However, as reentry usually involves a relatively large circuit often coupled with a discrete slow zone of conduction, we are able to use the classical techniques of entrainment mapp...

the interpolated retrograde P waves, the retrograde limb of a SAN reentry in the SAN junction probably would also have been blocked. Therefore, it’s highly unlikely the NPs occur as a result of SAN reentry with a failure to depolarize the left atrium. However, the NPs may represent right atrial depolarizations in left atrial P waves originating near the left atrial termination of BB (Fig 82) wh...