1) Angiospasm 
Vasospasm refers to a condition in which a blood vessel`s spasm leads to vasoconstriction. This can lead to tissue ischemia and tissue death (necrosis). Cerebral vasospasm may arise in the context of subarachnoid hemorrhage. Symptomatic vasospasm or delayed cerebral ischemia is a major contributor to post-operative stroke and death especially aft....
Spasm of blood vessels, decreasing their diameter.
(from the article `cramp`) ...most common in the limbs but also affecting certain internal organs. Examples of cramping include menstrual cramps and spasms of the circular ...
Sudden contraction of a blood vessel or a segment of a blood vessel.
The sudden decrease in the internal diameter of a blood vessel that results from contraction of smooth muscle within the wall of the vessel. This causes a decrease in blood flow, but an increase in systemic vascular resistance. ... Synonym: vasospasm. ... (27 Sep 1997) ... 
(va″zo-) (vas´o-spaz″әm) a spasm of blood vessels, causing vasoconstriction; called also angiospasm. adj., vasospas´tic, adj. .
Type: Term Pronunciation: vā′sō-spazm, vas′ō- Definitions: 1. Contraction or hypertonia of the muscular coats of the blood vessels. Synonyms: angiohypertonia, angiospasm
vasospasm, vasospastic 1. Sustained contraction of the muscular walls of the blood vessels with a resultant reduction in blood flow. 2. The sudden constriction of an artery, leading to a decrease in its diameter and in the amount of blood it can deliver.
Prolonged and profound constriction of blood vessels leading to inadequate blood supply to a tissue or organ.