Watson's water hammer<unk> , also known as Corrigan's<unk>  or<unk> , is the medical sign (seen in aortic regurgitation) which describes a<unk>  that is bounding and forceful, rapidly increasing and subsequently<unk> , as if it were the sound of a water hammer that was causing the<unk> . A water hammer was a Victorian toy in which a tube was half filled with fluid, the remainder being a vacuum. Each time the tube was inverted or shaken, the impact of the fluid at each end would sound like a hammer blow. This is associated with increased stroke volume of the left ventricle and decrease in the peripheral resistance leading to the widened<unk>  pressure of aortic regurgitation.
Collapsing pulse
Retroperistalsis
Pulsus paradoxus
Pulsus alternans
Shifting dullness
Intrinsicoid deflection
Precordial thump
Local gigantism