Precautions for use

Blood pressure in an individual is not constant but varies during the day depending on different factors:

  • It decreases at rest and increases with physical activity.
  • It falls when asleep.
  • It increases with meals.
  • It varies with the ambient temperature.
  • A strong emotion causes a significant increase (systolic pressure can reach 200 mmHg in a perfectly normal subject).

Knowing this, there are some precautions of use to observe before and during measurement:

  • Take your measurements under the same conditions (at the same time of day, on the same arm).
  • Relax for 5 minutes before taking a measurement.
  • Sit comfortably in a quiet place, feet flat on the floor, without crossing your legs.
  • Place the cuff at the same level as your heart. See How to place the cuff properly.
  • Don't talk and don't move for the entire measurement.
  • Breathe normally.

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