Blood hammer

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[1][2] by analogy with the hydraulic expression "water hammer", already used in vascular physiology to designate an arterial pulse variety, the "water-hammer pulse". Complete understanding of the relationship between mechanical parameters in vascular occlusions is a critical issue, which can play an important role in the future diagnosis, understanding and treatment of vascular diseases.


  1. Damsa T., et al. (1976). ""Blood-hammer" phenomenon in cerebral hemodynamics". Mathematical Biosciences. 29 (3–4): 193–202. doi:10.1016/0025-5564(76)90102-4.
  2. Tazraei, P. (2015). "The influence of the non-Newtonian properties of blood on blood-hammer through the posterior cerebral artery". Mathematical Biosciences. 264: 119–127. doi:10.1016/j.mbs.2015.03.013.
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