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Related Concept Videos

Vascular Spasm01:16

Vascular Spasm

3.0K
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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Updated: Dec 18, 2025

Pre-Chiasmatic, Single Injection of Autologous Blood to Induce Experimental Subarachnoid Hemorrhage in a Rat Model
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[Reversible cerebral vasoconstriction syndrome causing acute-onset headache].

Anna Nordlund Kessel1, Christian Peter Midtgaard Stenør, Waseem Ahmad

  • 1anna.nordlund.kessel@regionh.dk, annankessel@gmail.com.

Ugeskrift for Laeger
|June 10, 2020
PubMed
Summary

Reversible cerebral vasoconstriction syndrome causes thunderclap headaches due to narrowed brain arteries. This case report details diagnosis and treatment for this condition, emphasizing prompt evaluation for thunderclap headache.

Area of Science:

  • Neurology
  • Vascular Neurology

Background:

  • Reversible cerebral vasoconstriction syndrome (RCVS) involves cerebral artery narrowing.
  • The primary symptom is recurrent, sudden-onset thunderclap headache, potentially with neurological deficits.

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