The machine that measures blood pressure is called a sphygmomanometer and a doctor or nurse listens with a stethoscope over an artery in the arm as the pressure in the cuff is lowered.
The machine that measures blood pressure is called a sphygmomanometer. The cuff is placed around your arm and pumped up. The pressure in the cuff around your arm is then gradually reduced. A doctor or nurse listens with a stethoscope over an artery in the arm as the pressure in the cuff is lowered. They can hear typical noises when the pressure in the cuff equals your systolic and diastolic pressures. Modern electronic devices can also measure blood pressure.