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4 Monitoring NBP
Unattended measurement: Use clinical judgement to decide whether to perform frequent
unattended blood pressure measurements in cases of severe blood clotting disorders because of the
risk of hematoma in the limb fitted with the cuff.
CAUTION
If you spill liquid onto the equipment or accessories, particularly if there is a chance that it can get
inside the tubing or the measurement device, contact your service personnel.
Measurement Limitations
Measurements are impossible with heart rate extremes of less than 40 bpm or greater than 300 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
•
with obesity, where a thick layer of fat surrounding a limb dampens the oscillations coming from
the artery
•
on an edematous extremity.
The effectiveness of this sphygmomanometer has not been established in pregnant, including pre-
eclamptic patients.
Measurement Modes
There are four modes for measuring NBP:
Manual
•
Auto
•
Sequence
•
measurements and interval between them configurable for each cycle.
STAT
•
previous mode. Use only on supervised patients.
Reference Method
The measurement reference method is always Auscultatory (manual cuff). For further information, see
the Application Note supplied on the documentation DVD.
40
- measurement on demand.
- continually repeated measurements (between one minute and 24 hours adjustable interval).
- up to four measurement cycles which will run consecutively, with number of
- rapid series of measurements over a five minute period, then the monitor returns to the
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Troubleshooting
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