1. Check if the probe is affected by strong light in
the area.
2. Check if the connection is normal; if the red
light of the sensor flickers or does not turn on,
it is an inferior probe.
3. Check if there are any factors interfering with
the patient’s blood flow. (For example, if the
device is connected to the arm being measured
for blood pressure, or if the probe is banded
on the finger for too long a time.)
4. Check if the probe is properly positioned to the
patient.
5. Check if the patient is shaking their finger or
pressing the probe.
6. Check if the probe is damaged.
1. Check if air has leaked out due to bending or
damage of the NIBP cuff or hose.
2. Check if the proper type of cuff is used for the
patient.
3. Check if the posture of the measurement site is
proper.
4. Check if the patient moves during
measurement.
5. Check if the cuff is attached too loose or too
tight.