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2.4 Using the AC/DC Power Adapter
You may also operate this monitor using the included AC/DC
adapter. Use only the included adapter to avoid damaging
the unit.
1. Ensure that the AC/DC adapter and cable are not damaged.
2. Plug the adapter cable into the AC/DC Adapter port on the top
of the blood pressure monitor.
3. Plug the adapter into your electrical outlet. When the adapter
is connected, no battery current is consumed.
3. Using the Device
This section describes how to get the maximum benefit from your blood pressure monitor. Follow the instructions
carefully to get an accurate measurement of your blood pressure and pulse rate.
3.1 Obtaining Accurate Measurements
Your blood pressure can vary based on numerous factors, physiological conditions, and your surroundings. Follow
these guidelines to obtain accurate and error-free measurements of your blood pressure and pulse rate.
3.1A Before Measuring
•
Avoid eating, smoking as well as all forms of exertion directly before the measurement. All these factors
influence the measurement result. Relax by sitting in an armchair or at a table in a quiet atmosphere for about
5 minutes before the measurement.
•
Always take measurements on the same arm (normally left) and in the same posture. Do not switch between
right and left arms while recording your blood pressure as there may be a difference of up to 10mmHg
pressure between the two arms.
•
Attempt to carry out the measurements regularly at the same time of day, since blood pressure changes during
the course of the day. The ideal time to measure your blood pressure is in the morning after you wake up,
before breakfast and physical activity, and in the absence of the urge to urinate.
•
Rest for 5 minutes sitting quietly and release all the tension in your body — especially the arm muscles — before
beginning with the measurement. Remain calm and quiet when the measurement is in process. Do not speak
or move your arm (as well as other body) muscles during the process.
•
Ideally, you will be sitting at a table with both feet on the floor, and your arm resting on the table with the cuff
at heart level.
3.1B Common Sources of Error
All efforts by the patient to support the arm can increase the blood pressure. Make sure you are in a comfortable,
relaxed position and do not activate any of the muscles in the measurement arm during the measurement. Use a
cushion for support if necessary.
ATTENTION!
Comparable blood pressure measurements always require the same conditions with a peaceful and
calm environment. Ensure that you take measurements under the same conditions to obtain an
accurate estimate of blood pressure variation patterns.
•
If the arm artery lies considerably lower or higher than the heart, an erroneous value of blood pressure is
measured. Each 15 cm difference in height results in a measurement error of 10 mmHg.
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