Intermediate
Technical
In the Industry Vocabulary Test
vasospasm
Sudden constriction of blood vessel smooth muscle causing temporary vessel narrowing.
Full Definition
Vasospasm involves the acute contraction of vascular smooth muscle leading to vessel lumen reduction and decreased blood flow. In vascular medicine, it can occur spontaneously or be triggered by cold exposure, stress, or medications. Cerebral vasospasm following subarachnoid hemorrhage and coronary vasospasm are clinically significant forms. Digital vasospasm is characteristic of Raynaud's phenomenon and can cause finger color changes and pain.
Usage
Usage note: Distinguish from fixed arterial narrowing due to structural disease.
In Context
- "The patient experienced digital vasospasm triggered by cold weather exposure." — Clinical examination note
- "Calcium channel blockers may help prevent recurrent vasospasm in this patient." — Treatment recommendation
Also known as
arterial spasm
vascular spasm
Contrasted with
vasodilation
vessel relaxation
Don't confuse with
vasoconstriction
arterial occlusion