Novel ventricular tachyarrhythmia detection enhancement detects undertreated life-threatening arrhythmias.

Background: Ventricular tachyarrhythmias (VTA) with low and varying signal amplitudes and morphologies may not be successfully identified utilizing traditional implantable cardioverter-defibrillator algorithms.

Objective: Develop and validate a novel algorithm (VF Therapy Assurance, VFTA) to improve detection and timely delivery of high-voltage therapy (HVT) for these arrhythmias.

Methods: Arrhythmia detection was simulated on recorded VTA electrograms (EGMs) utilizing Abbott's Merlin.

Comparative study of acute and mid-term complications with leadless and transvenous cardiac pacemakers.

Background: Leadless cardiac pacemakers (LCPs) aim to mitigate lead- and pocket-related complications seen with transvenous pacemakers (TVPs).

Objective: The purpose of this study was to compare complications between the LCP cohort from the LEADLESS Pacemaker IDE Study (Leadless II) trial and a propensity score-matched real-world TVP cohort.

Methods: The multicenter LEADLESS II trial evaluated the safety and efficacy of the Nanostim LCP (Abbott, Abbott Park, IL) using structured follow-up, with serious adverse device effects independently adjudicated.

Effects of deliberate practice on crisis decision performance.

This study examined the impact of deliberate practice on pilot decision making in once-in-a-career crisis decision scenarios. First we explored the impact of deliberate practice on pilot decision-making performance for crisis flying scenarios that had been practiced in their entirety. Then we looked at the impact of deliberate practice in which one aspect of the crisis scenario--the particular malfunction--was unpracticed.