ReliOn BP200W Instruction Manual

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ReliOn BP200W Instruction Manual Manual pdf 11 page image

95. Taking a blood pressure measurementPlease note: You should always be seated before and during themeasurement.5.1. Before the measurement:• Avoid eating, smoking as well as all forms of exertion directly beforeyour measurement. These factors influence the measurement result.Relax by sitting in an armchair in a quiet atmosphere for about tenminutes before your measurement.• Always measure on the same wrist (normally left).• Compare readings at the same time of day, since your blood pressurechanges during the course of the day.5.2. Common sources of errorNote:Comparable blood pressure measurements always require thesame conditions. These are normally always quiet conditions.• All efforts to support the arm can increase blood pressure. Make sureyou are in a comfortable, relaxed position and do not flex any of themuscles in the measurement arm during the measurement. Use acushion for support if necessary.• If the wrist artery lies considerably lower (higher) than the heart, anerroneously higher (lower) blood pressure will be measured. (Each 15cm/6" difference in height results in a measurement error of 10 mmHg.)• A loose cuff causes false measurement values.• With repeated measurements, blood can accumulate in the respectivearm, which can lead to false results. Correctly executed blood pres-sure measurements should therefore first be repeated after a 1minute pause or after the arm has been held up in order to allow theaccumulated blood to flow away.