Patient Monitor User’s manual
11-2
11.3 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
convulsions;
——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.
11.4 Measurement Mode
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.
11.5 Monitoring Procedure
11.5.1 Preparing to Measure NIBP
1. Check the patient category, if you want to change the patient category,
select【Main menu】smartkey→【Patient Manage.】→【Admit Patient】
and select the patient type 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 the
limb.
Note: The accuracy of measurement of BP depends on the suitability of
the cuff.
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