Vital Signs Monitor User’s Manual
Chapter 7-2
7.3 Measurement Limitations
NIBP measurements are impossible with heart rate extremes of less than 40 bpm or
greater than 240 bpm, or if the patient is on a heart-lung machine.
The measurement may be inaccurate or impossible:
——with excessive and continuous patient movement such as shivering or
——if a regular arterial pressure pulse is hard to detect;
——with cardiac arrhythmias;
——with rapid blood pressure changes;
——with severe shock or hypothermia that reduces blood flow to the peripheries;
——on an edematous extremity.
There are three modes of measuring NIBP:
Manual: measurement on demand.
Auto: continually repeated measurements in the set interval.
STAT: rapid series of measurements over a five minutes period, then the
monitor returns to the previous mode. Use only on supervised patients.
7.5.1 Preparing to Measure NIBP
1. Check the patient category, if you want to change the patient category, Select
to enter【Patient Info】menu. And select the patient category as required.
2. Select the appropriate cuff according to patient category.
Check the limb circumference of patient.
Select the appropriate cuff (The applicable limb circumference for cuff is
marked on the cuff). The width of the cuff should be about 40% of the limb
circumference (50% for neonate) or 2/3 of the upper arm’s length. The
inflatable part of the cuff should be long enough to encircle 50%~80% of
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