Which term refers to a lack of blood flow to tissue due to obstruction or constriction of a vessel?

Which term refers to a lack of blood flow to tissue due to obstruction or constriction of a vessel?

• A. Blanch
• B. Maceration
• C. Necrosis
• D. Ischemia

Answer: (D)

Ischemia is the condition of reduced blood flow to tissue due to obstruction or constriction of a vessel. When blood flow is diminished, oxygen delivery drops, forcing cells to rely on less efficient metabolism and risking tissue injury if perfusion isn’t restored. This is different from blanch, which is a temporary or superficial pale color change from pressure or transient blood flow reduction and isn’t about sustained lack of perfusion. Maceration describes softened, moist, broken-down tissue from prolonged moisture, not a blood supply issue. Necrosis is the death of tissue that can result from prolonged ischemia, but it describes the end outcome rather than the initial lack of blood flow.

Ischemia is the condition of reduced blood flow to tissue due to obstruction or constriction of a vessel. When blood flow is diminished, oxygen delivery drops, forcing cells to rely on less efficient metabolism and risking tissue injury if perfusion isn’t restored. This is different from blanch, which is a temporary or superficial pale color change from pressure or transient blood flow reduction and isn’t about sustained lack of perfusion. Maceration describes softened, moist, broken-down tissue from prolonged moisture, not a blood supply issue. Necrosis is the death of tissue that can result from prolonged ischemia, but it describes the end outcome rather than the initial lack of blood flow.