Survival and recurrence following stroke. The Framingham study

Area of Science:

• Neurology
• Epidemiology
• Cardiovascular Medicine

Background:

• Stroke is a leading cause of death and disability.
• Understanding long-term outcomes and risk factors is crucial for patient management.

Purpose of the Study:

• To prospectively assess survival and recurrence rates after initial stroke.
• To identify factors influencing stroke outcomes in a general population.

Main Methods:

• Prospective cohort study of 5184 subjects followed biennially for 26 years.
• Analysis of initial strokes, recurrences, deaths, and case-fatality rates.
• Age-adjusted survival and recurrence rates were calculated, stratified by sex and pre-existing conditions.

Main Results:

• Initial stroke case-fatality rates varied by type, with intracerebral hemorrhage highest (82%).
• Five-year survival for brain infarction was significantly reduced by pre-stroke cardiac disease and hypertension, especially in men.
• Hypertension alone reduced survival in men but not women. Recurrences were often similar to the initial stroke type.
• Five-year recurrence rate for brain infarction was 0.42 in men, nearly double that of women.

Conclusions:

• The risk of death or recurrence after stroke is substantial.
• Sex, pre-existing cardiac comorbidity, and hypertension profoundly influence stroke outcomes.
• Risk stratification and management should consider these factors for improved patient prognosis.