Measurement Limitations - EDAN iM3 User Manual

Vital Signs Monitor User Manual
11 Do not apply the cuff to a limb where intravascular access or therapy, or an
arterio-venous (A-V) shunt is present, otherwise, it may result in injury to the patient.
12 NIBP readings can be affected by the measurement site, the position of the patient,
exercise, or the patient's physiologic conditions.
13 Continuous cuff pressure due to connection tubing kinking can block the blood flow,
and may result in injury to the patient.
14 Verifying the calibration is only applicable for adults, and it cannot be operated in
automatic measuring interval. Continuous measuring cannot be operated in automatic
measuring interval either.
NOTE:
1 It is suggested that the user should not start NIBP measuring when the low battery
displays, or the monitor may be turned off automatically.
2 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.
3 Continuous use of the automatic measuring mode for short intervals may lead to the
discomfort of patient. Continuous measuring and automatic measuring in neonatal or
pediatric mode may result in tissue damage or ischemia to the patient.
4 NIBP measurement can be affected by extremes of temperature, humidity and
altitude.
5 NIBP measurement value should be explained by qualified professionals.

10.3 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.
WARNING
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Monitoring NIBP