Digital Blood Pressure Measurement

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Blood pressure is the force of the blood against the wall of any blood vessel. The blood pressure measurement is written in numbers. The systolic (sis TAU lick) blood pressure is the top number. The diastolic (dy a STAU lick) blood pressure is the bottom number (for example, 110/60).

  • The systolic blood pressure is the pressure of the blood against the artery walls when the heart contracts (beats).
  • The diastolic blood pressure is the pressure of the blood against the artery walls between heartbeats, when the heart relaxes.

Doctor's Orders 

Take the blood pressure on the child’s

  • Right arm 
  • Left arm
  • Right leg
  • Left leg 

Take your child’s blood pressure every day at the same times: 

_____________, _____________, _____________, _____________, _____________, and _____________.

When to Call the Doctor

Call your child's doctor:

  • If the top number is: above ______ or below ______ for ______ blood pressure readings or for ______ hours.
  • If the bottom number is: above ______ or below ______ for ______ blood pressure readings or for _______ hours.

Other instructions:



Assemble the Blood Pressure Unit

It is important to read the manual that comes with the blood pressure unit.

  • Insert the batteries

Follow these 5 steps to get your blood pressure unit ready to use.

Blood pressure unit
  1. After you open the device, insert the batteries. The battery compartment is on the back of the device (Picture 1).
  2. Remove cover from the bottom plate, as shown.
  3. Insert 4 batteries (size AA). Always use AA long life batteries or alkaline 1.5 volt batteries. Do not use rechargeable batteries.
  4. If a battery warning appears in the display, replace the batteries. Connect the tube.
  5. Insert the cuff tube into the opening on the side of the device, (Picture 2).

How to Take a Blood Pressure Reading

  1. Place the cuff snugly about 1 inch above your child’s elbow, usually on the left arm (Picture 3).
  2. Press the On/Off/Memory button to turn on the many symbols will appear in the display window for 2 seconds. A blinking 0 appears in the display.
  3. Grasp the bulb with the hand opposite of the arm the cuff is on. Pump the bulb to fill the cuff with inflate the cuff to a number at least 30 mmHg higher than the expected top pressure. See Average Blood Pressure by Age chart below.
  4. Age Blood Pressure
    Premature  55-75/35-45
    0-3 Months 65-85/45-55
    3-6 Months 70-90/50-65
    6-12 Months 80-100/55-65
    1-3 Years 80-105/55-70
    6-12 Years 100-120/60-75
  5. When the cuff is inflated, lay down the bulb. Have your child relax and sit quietly. The measurement now proceeds on its own. As the device measures the blood pressure, the numbers always show in the window. If no measurement takes place, a flashing arrow pointing up will show in the display. Pump the bulb again to a higher number.
  6. When the device senses a pulse, a heart symbol in the display starts to flash. You will hear a beep for each heartbeat.
  7. When the measurement is complete, the systolic and diastolic blood pressure and the pulse show in the display. Quickly release the cuff pressure.

Keeping a Record 

It is It is important to keep a record of your child's blood pressure. Use the Daily Blood Pressure Record on the next page, a regular calendar, or Helping Hand HH-3, Daily Record.

  1. Write your child's blood pressure in the box for that day. For example, if your child's blood pressure is 120/60 and 122/62 on the first day, you would record it as shown in the example below.
  2. Take the record with you whenever your child sees the doctor.

Digital Blood Pressure Measurement (PDF)

HH-II-213 4/16 Copyright 2016, Nationwide Children’s Hospital