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Related Concept Videos

Regulation of Stroke Volume01:27

Regulation of Stroke Volume

The regulation of stroke volume, which is the amount of blood the heart pumps out during each heartbeat, is critical for maintaining a healthy circulatory system. Stroke volume is influenced by three main factors: preload, contractility, and afterload.
Preload refers to the degree of stretch on the heart before it contracts. It's analogous to the stretching of a rubber band; the more it's stretched, the more forcefully it snaps back. This concept is encapsulated in the Frank-Starling law of the...

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Setting Up a Stroke Team Algorithm and Conducting Simulation-based Training in the Emergency Department - A Practical Guide
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Stroke RiskometerTM mobile phone application improves stroke knowledge in a randomized controlled trial.

Addisu Dabi Wake1,2, Rita Krishnamurthi3, Brooklyn J Fraser1,4

  • 1Menzies Institute for Medical Research, University of Tasmania, Hobart, TAS, Australia.

International Journal of Stroke : Official Journal of the International Stroke Society
|April 30, 2026
PubMed
Summary
This summary is machine-generated.

The Stroke Riskometer™ mobile app modestly improved stroke knowledge at six months in a randomized controlled trial. However, sustained knowledge improvement was not observed at twelve months, limiting its potential for primary stroke prevention.

Keywords:
Health knowledgeStroke RiskometerTM appmobile applicationsprimary preventionrisk factorsstroke

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Area of Science:

  • Public Health
  • Digital Health
  • Stroke Prevention

Background:

  • Increasing public knowledge about stroke is crucial for reducing its burden.
  • A randomized controlled trial (RCT) evaluated the Stroke Riskometer™ mobile application's impact on stroke knowledge.

Purpose of the Study:

  • To assess the effectiveness of the Stroke Riskometer™ mobile application in improving stroke knowledge.
  • To determine if the app enhances understanding of stroke risk factors, warning signs, and management.

Main Methods:

  • A phase III, prospective, blinded, 2-arm RCT conducted in Australia and New Zealand (2021-2023).
  • Participants (aged 35-75) with ≥2 stroke risk factors and no prior cardiovascular disease were randomized.
  • Stroke knowledge was measured using validated questions at baseline, 3, 6, and 12 months.

Main Results:

  • The intervention group (app users) showed a statistically significant increase in overall stroke knowledge at 6 months compared to the usual care group.
  • The app demonstrated a stronger effect on identifying stroke risk factors at 3 months.
  • Intervention effects were more pronounced in individuals with higher education and specific socioeconomic and ethnic backgrounds.

Conclusions:

  • The Stroke Riskometer™ app offers a modest, short-term improvement in stroke knowledge.
  • Evidence for sustained knowledge retention at 12 months was lacking, suggesting limited long-term impact.
  • While knowledge can drive behavior change, the app's current efficacy may not fully support primary stroke prevention efforts.