Mindray VS-900, Operator'S Manual

Page: 81 / 192

9-3
9.3 Measurement Limitations
Measurements are impossible with heart rate extremes of less than 40 bpm or greater
than 240bpm, or if the patient is on a heart-lung machine.
The measurement may be inaccurate or impossible:

If arterial pressure pulses are hard to detect

In the presence of excessive and continuous patient movement such as
shivering or convulsions

During certain cardiac arrhythmias

For pregnant or pre-eclamptic patients

Rapid blood pressure changes

Severe shock or hypothermia that reduces blood flow to the peripheries

Obesity, where a thick layer of fat surrounding a limb dampens the oscillations
coming from the artery
9.4 NIBP Measurement Mode
There are the following modes of measuring NIBP:

Manual: measurement on demand.

Auto: continually repeated measurements at set intervals.

STAT: continually rapid series of measurements over a five minute period, then
return to the previous mode.

Program: continually automatic measurement at set durations and intervals.
To set NIBP measurement mode, select NIBP parameter area to access [
NIBP Setup ]
menu:

Select [ Interval ] to select manual mode or auto NIBP measurement interval.

Select [
NIBP STAT
] to start a continuous NIBP measurement.