What does ischemia mean?
Ischemia is a medical condition in which blood flow to part of the body is reduced or blocked. Because blood carries oxygen and nutrients, the affected tissue may become temporarily unable to function normally and, if the interruption is severe or prolonged, may suffer lasting damage. Common examples include cerebral ischemia, affecting the brain, and myocardial ischemia, affecting the heart muscle; ischemia can also be a major mechanism in a heart attack or ischemic stroke. The word is also used figuratively to describe a severe restriction in the flow of money, investment, personnel, or information. In this broader sense, “institutional ischemia” conveys the idea that a vital activity is being starved of the resources it requires. The term is chiefly associated with technical or formal contexts, although public-health and medical explanations often use it to help readers understand disorders involving interrupted circulation.
An inadequate supply of blood to a body organ or tissue, causing oxygen deprivation and impaired function.
"The test detected ischemia in the brain."
A chiefly medical term; the British spelling is “ischaemia.”
A figurative condition in which resources, investment, or activity are severely restricted.
"The organization suffered from a decade of financial ischemia."
Figurative use is formal and occurs especially in economic, political, and institutional contexts.
The plural is uncommon in general writing but follows the standard regular plural form.
"The researchers documented cases of transient ischemias in several patients."
Ischemia is what happens when the body's delivery system goes offline: without blood, even a brief interruption can threaten the brain or heart.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does ischemia come from?
The word comes from Greek ischaemia, a medical term formed from roots meaning “to hold back” and “blood.” It entered English in the 19th century and was subsequently adapted to the spelling “ischemia,” which is standard in American usage. British English generally retains the spelling “ischaemia,” while the related adjectives are “ischemic” and “ischaemic.”
Related word forms
How ischemia is actually used
Primarily a medical term, especially in neurology, cardiology, and surgery. In British usage, the usual spelling is “ischaemia”; the corresponding adjective is “ischaemic.” Figurative use is more common in formal commentary and institutional contexts.
Easily confused with ischemia
Ischemia is a reduction or interruption of blood supply to tissue, whereas anemia is a deficiency of red blood cells or hemoglobin.
Ischemia specifically involves inadequate blood flow, while hypoxia refers more broadly to insufficient oxygen availability in tissues.