91
14.2.3
Measurement restriction
Vibration measurement has its restriction subject with patient conditions. This measurement method looks
for regular pulse waves generated from arterial pressure, so when patient conditions make this wave
detection method hard to work, measured values are no more reliable and measurement time last longer.
Users must understand the following cases will disturb the measurement method, making measured press
unreliable or measurement time extended. In such cases, patient conditions disable measurement to be
continued.
Patient movement
In case a patient is moving, shaking or convulsing, measurement will be unreliable or even impossible;
as such scenarios will disturb detection of arterial pulse and extend measurement time.
Arrhythmia
In case a patient shows irregular heartbeats resulted from arrhythmia, measurement will be unreliable
or even impossible, while measurement time will also be extended.
Heart-lung machine
If a patient is connected with an artificial heart-lung machine, measurement can‘t be realized.
Pressure change
Within certain time if the patient blood pressure immediately changes while users are analyzing
arterial pulse so as to obtain measurement values, measurement will be unreliable or even impossible.
Serious shock
In case a patient is under serious shock or extreme low temperature, measurement will be unreliable as
reduction in blood flowing peripherally will result reduction in arterial pulse.
HR limits
In case of HR lower than 40bpm or higher than 240bpm, no blood pressure measurement can be done.
14.2.4
NIBP Parameter Setting & Adjustment
NIBP measurement results and relevant information are laid on screen as follows:
Figure14-2 NIBP measurement results
Measuring Mode
Measured Value
Measurement Time
BP Unit
Patient type
Prompt Area
