Objective The goal is to learn to measure your heart rate and blood pressure. Equipment and materials A stopwatch or clock with a second hand, blood

How to measure heart rate and blood pressure [measurement]

Objective

The goal is to learn to measure your heart rate and blood pressure.

Equipment and materials

A stopwatch or clock with a second hand, blood pressure cuff and stethoscope.

Progress

1) Palpate subject’s pulse on the radial artery and count it for a minute, when he is sitting in a chair.

2) Measure subject’s blood pressure when he is sitting.

3) Measure the blood pressure when subject is lying. Compare the amount of pressure with the previous one. Explain the results. Taken from http://worldofschool.org

Pressure measurement rules

Position tonometer cuff at 1-3 cm above the bend of the elbow, so that it covers his shoulder tight but is not squeezing the tissue. Palpate pulsating brachial artery in the ulnar fossa and attach stethoscope to this place. Pump air into the cuff to pressurize it to a maximum. Pulse should disappear. Turn the screw tap and while slowly releasing the air from the cuff, listen for the presence of tones on the brachial artery. The moment of their appearance coincides with the maximum (systolic) pressure, the amount of which you will see on the blood pressure monitor. Continuing to slowly let the air out of the cuff, you will notice that at some point the tones disappear; this time corresponds to the minimum (diastolic) pressure. Record the measurement results.

Questions:
  • Explain the practical importance of the ability to measure pulse and blood pressure.

  • Explain changes in blood pressure in different positions of the human body.