Vasospasm

Vasospasm refers to a condition in which blood vessels spasm, leading to vasoconstriction. This can lead to tissue death. Cerebral vasospasms may arise in the context of subarachnoid hemorrhage.

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Blood vessel: The blood vessels are part of the circulatory system and function to transport blood throughout the body. The most important types, arteries and veins, are so termed because they carry blood away from or towards the heart, respectively....

Vasoconstriction: Vasoconstriction is the narrowing of the blood vessels resulting from contraction of the muscular wall of the vessels, particularly the large arteries, small arterioles and veins. The process is the opposite of vasodilation, the widening of blood vessels. The process is particularly important in sta...

Subarachnoid hemorrhage: A subarachnoid hemorrhage (SAH) is bleeding into the subarachnoid space surrounding the brain, i.e., the area between the arachnoid and the pia mater. It is a medical emergency which, depending on severity, can lead to death or severe disability even if recognized and treated in an early stage....