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Related Concept Videos

Antiarrhythmic Drugs: Class III Agents as Potassium Channel Blockers01:12

Antiarrhythmic Drugs: Class III Agents as Potassium Channel Blockers

924
Class III antiarrhythmic drugs are a group of medications that can prolong action potentials in the heart. They achieve this by blocking potassium channels or enhancing inward currents from sodium channels. However, these drugs have a unique property of "reverse use-dependence," which is most pronounced at slower heart rates and can lead to torsades de pointes—a specific type of arrhythmia. However, it is essential to note that excessive QT interval prolongation—a measure of...
924

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Related Experiment Video

Updated: Jun 12, 2025

The WATCHMAN Left Atrial Appendage Closure Device for Atrial Fibrillation
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Increasing the reach: optimizing screening for atrial fibrillation-the STROKESTOP III study.

Mashroor Khan1, Michael Ingre1, Fredrik Carlstedt2

  • 1Department of Medicine Huddinge, Karolinska Institutet, Karolinska University Hospital Huddinge, SE-141 86 Stockholm, Stockholm, Sweden.

Europace : European Pacing, Arrhythmias, and Cardiac Electrophysiology : Journal of the Working Groups on Cardiac Pacing, Arrhythmias, and Cardiac Cellular Electrophysiology of the European Society of Cardiology
|September 19, 2024
PubMed
Summary

Opportunistic screening for atrial fibrillation (AF) may increase participation compared to population screening. This study compares participation rates to improve early AF detection and prevent stroke.

Keywords:
Atrial fibrillationPreventionScreeningStroke

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Area of Science:

  • Cardiology
  • Public Health
  • Preventive Medicine

Background:

  • Atrial fibrillation (AF) is a common arrhythmia and a major risk factor for ischemic stroke.
  • Undiagnosed AF, often asymptomatic, poses a significant public health challenge.
  • Early detection and treatment of AF can prevent strokes and improve patient outcomes.

Purpose of the Study:

  • To compare the participation rates of opportunistic screening versus population screening for atrial fibrillation.
  • To determine if opportunistic screening is a more effective method for increasing AF screening participation.
  • To inform strategies for improving early detection of AF in at-risk populations.

Main Methods:

  • STROKESTOP III, a randomized prospective cohort study involving 2954 individuals aged 75-76.
  • Comparison of population screening versus opportunistic screening methods across 16 primary care clinics.
  • Use of handheld one-lead ECG devices for 30-second recordings, three times daily for two weeks.

Main Results:

  • The study aims to determine the participation rate in opportunistic screening compared to population screening.
  • Participants with detected AF will be referred for primary healthcare physician consultation and treatment.
  • The primary objective is to evaluate the effectiveness of opportunistic screening in increasing participation.

Conclusions:

  • The STROKESTOP III study will yield crucial data on screening method effectiveness for atrial fibrillation.
  • Findings will guide the selection of optimal screening strategies to enhance participation.
  • Improved participation in AF screening can lead to better stroke prevention and public health outcomes.