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Risk factor burden predicts long-term mortality after cerebral infarction
Insights
The number of traditional risk factors significantly impacts long-term mortality after cerebral infarction. Patients with more risk factors face a higher risk of death, underscoring the need for careful monitoring.
Area of Science:
- Cardiovascular Research
- Neurology
- Public Health
Background:
- Previous research indicates a link between traditional risk factors and mortality in young stroke patients.
- The cumulative effect of multiple risk factors on long-term outcomes requires further investigation.
Purpose of the Study:
- To examine the association between the number of traditional risk factors and long-term mortality following cerebral infarction.
- To determine if this association is independent of patient age.
Main Methods:
- A cohort of acute cerebral infarction patients, alive 30 days post-stroke, was studied.
- Traditional risk factors (hypertension, diabetes, smoking, etc.) were assessed.
- Cox regression analyses were used to evaluate mortality risk over a mean follow-up of 2.4 years.
Main Results:
- Mortality rates increased with the number of risk factors: 14% (none), 13% (1-3), 19% (4-5), and 26% (6+).
- Each additional risk factor was associated with a 30% increased mortality risk (Hazard Ratio = 1.3).
Conclusions:
- An increasing number of traditional risk factors is significantly associated with long-term mortality in cerebral infarction patients, regardless of age.
- Close long-term follow-up is crucial for patients with multiple risk factors to mitigate mortality risk.
Objective:
Previous studies have shown significant association between the number of traditional risk factors and long-term mortality of cerebral infarction in young stroke patients. The aim was to investigate risk factors separately and in sum in relation to long-term mortality after cerebral infarction, irrespective of age.
Materials And Methods:
Long-term mortality in relation to number of traditional risk factors (angina pectoris, myocardial infarction, intermittent claudication, hypertension, diabetes mellitus, and smoking at the time of the index stroke) and etiology was studied in patients with acute cerebral infarction admitted to the Stroke Unit, Department of Neurology, Haukeland University Hospital, between February 2006 and February 2011. Only patients alive 30 days after stroke onset were included. Cox regression analyses were performed.
Results:
After a mean follow-up time of 2.4 years, 14% with no risk factors had died, while the corresponding frequencies in patients with 1-3 or more risk factors were 13%, 19%, and 26%, respectively (P < 0.001). The number of risk factors was associated with mortality on Cox regression analysis (HR = 1.3, P < 0.001).
Conclusion:
Increasing number of traditional risk factors is associated with long-term mortality in patients with cerebral infarction, irrespective of age. Careful long-term follow-up is important, especially among patients with several risk factors.
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