Why is it called water hammer pulse?
This type of pulse was likened to a water hammer, a Victorian toy consisting of a glass tube filled partly with water or mercury in a vacuum. The water or mercury produced a slapping impact when the glass tube was turned over. Also called a Corrigan pulse or a cannonball, collapsing, pistol-shot, or trip-hammer pulse.
What does Corrigan’s pulse mean?
: a pulse characterized by a sharp rise to full expansion followed by immediate collapse that is seen in aortic insufficiency. — called also water-hammer pulse.
What is a Waterhammer pulse?
Water hammer pulse is a physical exam finding that describes a bounding, forceful pulse with a rapid upstroke and descent. It is seen in many physiological and pathological conditions but is most often associated with aortic regurgitation.
How do you check for collapsing pulse?
Examine for a collapsing pulse by placing your fingers across the anterior aspect of patient’s forearm and applying just enough pressure to occlude the radial pulse. Confirm that the patient has no pain in their shoulder, and then elevate their arm above their head whilst maintaining the position of your hand.
How does water hammer pulse feel?
To feel a water hammer pulse: with the patient reclining, the examiner raises the patient’s arm vertically upwards. The examiner grasps the muscular part of the patient’s forearm. A water hammer pulse is felt as a tapping impulse that is transmitted through the bulk of the muscles.
What is water hammering effect?
Water hammer is a phenomenon that can occur in any piping system where valves are used to control the flow of liquids or steam. Water hammer can occur when an open valve suddenly closes, causing the water to slam into it, or when a pump suddenly shuts down and the flow reverses direction back to the pump.
What causes bounding pulses in PDA?
Bounding pulses are caused by the relatively low systemic arterial blood pressure due to the continuous runoff of blood from the aorta into the pulmonary artery.
What causes hyperkinetic pulse?
Hyperkinetic pulses can also occur where there is a rapid peripheral runoff of blood in addition to a large stroke volume from the left ventricle. Patent ductus arteriosus with normal pulmonary pressures, large arterial venous fistulas, and severe aortic regurgitation can cause these hyperkinetic pulses.
What causes water hammer?
Water hammer is usually caused in high pressure (e.g. mains pressure) water systems either when a tap is turned off quickly, or by fast-acting solenoid valves, which suddenly stop the water moving through the pipes and sets up a shock wave through the water, causing the pipes to vibrate and ‘shudder’.