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Posterior circulation ischemic stroke in Korean population.

J-H Lee1, S-J Han, Y-H Yun

  • 1Department of Neurology, College of Medicine, Hallym University, Anyang City, South Korea.

European Journal of Neurology
|July 13, 2006
PubMed
Summary

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This study analyzed posterior circulation ischemic stroke (PCS) in Koreans, finding large artery disease and hypertension were common. PCS characteristics in this population differ from Caucasian data.

Area of Science:

  • Neurology
  • Stroke Medicine
  • Epidemiology

Background:

  • Posterior circulation ischemic stroke (PCS) is a significant cause of morbidity and mortality.
  • Understanding the specific characteristics of PCS in diverse populations is crucial for targeted prevention and treatment strategies.

Purpose of the Study:

  • To investigate the demographic features, risk factors, stroke subtypes, lesion distributions, and clinical outcomes of PCS in the Korean population.
  • To compare these characteristics with those reported in Caucasian populations.

Main Methods:

  • Retrospective review of 591 consecutive PCS patients from the Hallym Stroke Registry (HSR) between January 1996 and July 2002.
  • Analysis included patient demographics, risk factors (hypertension, cardioembolic sources), stroke subtypes (large artery disease, small vessel disease, cardioembolism), infarct locations, and clinical outcomes (hospital mortality, discharge status).

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Main Results:

  • PCS constituted 39.8% of all ischemic strokes in the study cohort.
  • The most common risk factor was hypertension (69.9%), while cardioembolic sources were infrequent (11.0%).
  • Large artery disease (50.0%) was the predominant stroke subtype, followed by small vessel disease (33.8%). Infarcts were most commonly located in the middle territory (36.5%).
  • Hospital mortality rate was 4.1%, and outcomes were comparable to anterior circulation stroke (ACS).

Conclusions:

  • The etiology and lesion topography of PCS in the Korean population exhibit distinct patterns compared to Caucasian populations, notably with a higher prevalence of large artery disease.
  • Hypertension is a major risk factor, and cardioembolic sources are less common in Korean PCS patients.
  • These findings underscore the need for population-specific approaches in managing posterior circulation ischemic stroke.