The blood hammer phenomenon is a sudden increase of the upstream blood pressure in a blood vessel (especially artery or arteriole) when the bloodstream is abruptly blocked by vessel obstruction. The term "blood-hammer" was introduced in cerebral hemodynamics by analogy with the hydraulic expression "water hammer," already used in vascular physiology to designate an arterial pulse variety, the "water-hammer pulse."
Famous quotes containing the words blood and/or hammer:
“Religion! How it dominates man’s mind, how it humiliates and degrades his soul. God is everything, man is nothing, says religion. But out of that nothing God has created a kingdom so despotic, so tyrannical, so cruel, so terribly exacting that naught but gloom and tears and blood have ruled the world since gods began.”
—Emma Goldman (1869–1940)
“He asked water, and she gave him milk; she brought forth butter in
a lordly dish.
She put her hand to the nail, and her right hand to the workmen’s
hammer; and with the hammer she smote Sis’e-ra, she smote off his
head, when she had pierced and stricken through his temples.”
—Bible: Hebrew Judges (l. V, 25–26)