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:
“In the tale, in the telling, we are all one blood. Take the tale in your teeth, then, and bite till the blood runs, hoping it’s not poison; and we will all come to the end together, and even to the beginning: living, as we do, in the middle.”
—Ursula K. Le Guin (b. 1929)
“I suppose that one of the psychological principles of advertising is to so hammer the name of your product into the mind of the timid buyer that when he is confronted with a brusk demand for an order he can’t think of anything else to say, whether he wants it or not.”
—Robert Benchley (1889–1945)