Korotkoff test

Ko·rot·koff test

(kŏ-rot'kof),
the blood pressure in the distal circulation is measured while the artery above an aneurysm is compressed. Collateral circulation is considered good if blood pressure is fairly high.

Ko·rot·koff test

(kō-rot'kof test)
A test of collateral circulation; while the artery proximal to an aneurysm is compressed, the blood pressure in the distal circulation is estimated; if it is fairly high, the collateral circulation is good.

Korotkoff,

Nikolai S., Russian physician, 1874-1920.
Korotkoff sounds - sounds heard over an artery when pressure over it is reduced below systolic arterial pressure, as when blood pressure is determined by the auscultatory method.
Korotkoff test - a test of collateral circulation.