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Related Concept Videos

Vascular Spasm01:16

Vascular Spasm

1.3K
The vascular phase, also known as vasospasm, is the initial stage of hemostasis, crucial for preventing excessive bleeding when a blood vessel is injured. After a vessel is cut, nerves in the damaged area trigger pain and other sensory impulses. Simultaneously, the smooth muscles in the vessel wall contract, resulting in a vascular spasm. This contraction reduces the vessel's diameter at the injury site, slowing or stopping blood loss through the vessel wall. Vascular spasms typically last...
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Major vascular events after first incident stroke: a population-based study.

Rayka Malek1, Salha Alasiri1, Charles D A Wolfe1

  • 1School of Life Course & Population Sciences, King's College London, London, UK.

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Major vascular events are common after a first stroke. Identifying risk factors like prior atrial fibrillation and previous myocardial infarction (MI) is crucial for preventing recurrent events and mortality.

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Area of Science:

  • Neurology
  • Cardiology
  • Public Health

Background:

  • Stroke care advances have improved survival but lack data on major vascular event trends and risk factors.
  • Understanding post-stroke sequelae is vital for patient outcomes and healthcare planning.

Purpose of the Study:

  • To identify demographic and clinical factors associated with subsequent major vascular events after a first-ever stroke.
  • To analyze trends in recurrent stroke, myocardial infarction (MI), and mortality post-stroke.

Main Methods:

  • Analysis of 6051 first-ever stroke patient records (1995-2018) in South London, UK.
  • Utilized semicompeting risks models to assess factors influencing time to recurrent stroke, MI, and mortality.
  • Adjusted models for age, sex, socioeconomic status, comorbidities, stroke severity, and stroke subtype.

Main Results:

  • Five-year cumulative incidences: 9.2% for recurrent stroke, 4.4% for MI, and 45% for mortality.
  • Prior atrial fibrillation increased mortality risk (HR=1.47); previous MI was the strongest predictor of post-stroke MI (HR=9.17).
  • Stroke unit care reduced hazard of mortality (HR=0.60) and indirect mortality (HR=0.57).

Conclusions:

  • Major vascular events are prevalent post-stroke, especially with existing vascular conditions.
  • Stroke recurrence rates have plateaued, but MI incidence has risen, necessitating targeted risk factor management.
  • Strategies to mitigate second vascular events and mortality in high-risk stroke survivors are essential.