Measurement Limitations; Measurement Methods; Measurement Procedures - EDAN elite V5 User Manual

Patient Monitor User Manual

12.3 Measurement Limitations

Measurements are impossible with pulse 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 in the following situations:
A regular arterial pressure pulse is hard to detect.
Patients with cardiac arrhythmias.
Patients with excessive and continuous movement such as shivering or convulsions.
Patients with rapid blood pressure changes.
Patients with severe shock or hypothermia that reduces blood flow to the peripheries.
Patients with obesity, where a thick layer of fat surrounding a limb dampens the oscillations
coming from the artery.
Patients on an edematous extremity.

12.4 Measurement Methods

There are three methods of measuring NIBP:
Manual - measurement on demand.
Auto - continually repeated measurements (between 1 and 480 minute adjustable interval).
After the first measurement starts manually, the monitor will automatically measure NIBP as
preset interval.
Continuous- the measurement will run consecutively in five minutes, then the monitor enters
manual mode.
Prolonged non-invasive blood pressure measurements in Auto mode may be associated
with purpura, ischemia and neuropathy in the limb wearing the cuff. When monitoring a
patient, examine the extremities of the limb frequently for normal color, warmth and
sensitivity. If any abnormality is observed, stop the blood pressure measurements.

12.5 Measurement Procedures

To obtain accurate measurements, the following operating steps need to be observed:
1. Ensure the patient position in normal use, including
Comfortably seated or lie flat, legs uncrossed;
Feet flat on the floor
Back and arm supported
Middle of the cuff at the level of the right atrium of the heart
During the measurement, relax as much as possible, neither talking nor applying external
WARNING
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Monitoring NIBP