Extra heart sounds can be a sign of heart failure. A stethoscope is also used to listen to the lungs. A BP is obtained when a BP cuff is wrapped around your arm and inflated to a pressure high enough to stop the flow of blood in the artery in your arm. The stethoscope is then placed over the artery. Air is slowly let out of the cuff.
Blood flow starts when the pressure in the cuff becomes lower than the pressure in the artery.
This creates a sound which can be heard with a stethoscope. The pressure on the BP gauge is the upper number in a BP reading. The lower number is the pressure at which the artery is no longer compressed and the sound stops. Inc. All rights reserved. Simply register for a free Postbox in the country where your merchant is located.