Omron HBP-9020 Instruction Manual page 22

How to Measure Blood Pressure
Checklist for situations when the measurement results are doubtful or
measurement is not possible
1. Basic points to ensure correct measurement
The elbow detection lamp should be on during measurement.
(If the elbow detection lamp is on during measurement, "Measurement was performed at the correct
arm position" will appear on the printed measurement results.)
The arm should be bare or with thin clothing.
The optional stand and chair are used, or a desk and chair with the specified heights are used.
(Desk: 70 cm, chair: 43 cm)
The temperature of the room where the monitor is installed is at 20°C to 25°C (neither hot nor cold).
2. Checklist for factors that will reduce measurement reliability or prevent
measurement
The user has an irregular pulse (arrhythmia) or other rapid fluctuations of blood pressure.
The user has poor peripheral circulation or noticeably low blood pressure or body temperature.
The user moves or speak during measurement.
The sleeve is rolled up and exerting pressure on the upper arm.
Measurement is taken immediately after exercise.
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