30
3. Using the Unit
What is Irregular Heartbeat?
An irregular heartbeat is a heartbeat 
rhythm that varies by more than 25% 
from the average heartbeat rhythm 
detected while the unit is measuring 
the systolic and diastolic blood 
pressure.
If such an irregular rhythm is 
detected more than twice during 
measurement, the irregular 
heartbeat symbol (   ) appears on 
the symbol when the measurement 
results are displayed. 
What is Arrhythmia?
A heartbeat is stimulated by electrical signals that cause the heart to 
contract.
Arrhythmia is a condition where the heartbeat rhythm is abnormal due 
to flaws in the bio-electrical system that drives the heartbeat. Typical 
symptoms are skipped heartbeats, premature contraction, an 
abnormally rapid (tachycardia) or slow (bradycardia) pulse. This can 
be caused by heart disease, aging, physical predisposition, stress, 
lack of sleep, fatigue etc. Arrhythmia can only be diagnosed by a 
doctor through a special examination.
Whether the appearance of the irregular heartbeat symbol ( ) in 
the results indicates arrhythmia or not can only be determined by an 
examination and diagnosis by your doctor. 
If the irregular heartbeat symbol (   ) is shown frequently, please 
make your doctor aware of it. Conducting self-diagnosis and 
treatment based on measurement results is dangerous. Be sure to 
follow the instructions of your doctor.