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Risk of stroke in congestive heart failure with and without atrial fibrillation

Si-Hyuck Kang1, Joonghee Kim2, Jin Joo Park1

  • 1Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam-si, Republic of Korea.

International Journal of Cardiology
|August 23, 2017
PubMed

Insights

Patients with congestive heart failure (CHF) face a higher risk of stroke and thromboembolism. The CHA2DS2-VASc score helps identify stroke risk in CHF patients, similar to those with atrial fibrillation (AF).

Area of Science:

  • Cardiology
  • Neurology
  • Public Health

Background:

  • Congestive heart failure (CHF) is a known risk factor for ischemic stroke.
  • This study compares stroke and thromboembolism risk in CHF patients versus the general population and atrial fibrillation (AF) patients.

Purpose of the Study:

  • To estimate the risk of stroke and thromboembolism in patients with CHF.
  • To compare stroke risk between CHF patients, AF patients, and the general population.
  • To evaluate the utility of the CHA2DS2-VASc scoring system in stratifying stroke risk for CHF patients.

Main Methods:

  • Utilized data from the National Health Insurance Corporation sample cohort (2003-2012).
  • Classified patients into control, CHF, AF, and CHF plus AF groups.
  • Analyzed annualized stroke risk and assessed the discriminatory value of the CHA2DS2-VASc score.

Main Results:

  • CHF patients exhibited a significantly increased risk of ischemic stroke compared to controls.
  • Annualized stroke risk was 2.00% for CHF, 2.27% for AF, and 2.87% for CHF plus AF patients.
  • The CHA2DS2-VASc score demonstrated moderate discriminatory value for stroke risk in both CHF and AF patients, identifying low-risk individuals.

Conclusions:

  • Congestive heart failure patients are at elevated risk for ischemic stroke and thromboembolism.
  • The CHA2DS2-VASc scoring system can aid in stratifying individual stroke risk for CHF patients.
  • Effective stroke prevention strategies are crucial for managing CHF complications.
Abstract

Keywords:
Atrial fibrillationCongestive heart failureEpidemiologyStroke

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