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."
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- Shrivastava, G. S. (2004). Fluid Mechanics and the Undergraduate Civil Engineer, J. Hydr. Engrg., 130(10):953-956
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