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bounding pulse : ウィキペディア英語版
Watson's water hammer pulse
Watson's water hammer pulse is the medical sign which describes a pulse that is bounding and forceful, rapidly increasing and subsequently collapsing, as if it were the sound of a waterhammer that was causing the pulse.
A waterhammer was a Victorian toy in which a tube was half filled with fluid, the remainder being a vacuum. The child would invert and reinvert the tube; each time the impact of the fluid at each end would sound like a hammer blow.〔https://www.youtube.com/watch?v=Kb6feUfHgAU〕
This is associated with increased stroke volume of the left ventricle and decrease in the peripheral resistance leading to the widened pulse pressure of aortic regurgitation.
==Eponym==

"Watson's water hammer pulse" and "Corrigan's pulse" refer to similar observations. However, the former usually refers to measurement of a pulse on a limb, while the latter refers to measurement of the pulse of the carotid artery.〔
* "Corrigan's pulse" is named for Sir Dominic Corrigan, the Irish physician, who characterized it in 1832.〔D. J. Corrigan. On permanent patency of the mouth of the aorta, or inadequacy of the aortic valves. The Edinburgh Medical and Surgical Journal, 1832, 37: 225-245.〕
* "Watson's water hammer pulse" is named for Thomas Watson, who characterized it in 1844.〔

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Watson's water hammer pulse」の詳細全文を読む



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