Chapter 9: Non-invasive Blood Pressure
VS2000 Vital Signs Monitor Operation Manual 9-3
9.4 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:
• if a regular arterial pressure pulse is hard to detect
• with cardiac arrhythmias
• with excessive and continuous patient movement such as shivering or
convulsions
• 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.
9.5 Attaching the Patient
1. Choose a blood pressure cuff appropriate for the patient and the limb size
by measuring the circumference of the limb. See the table below.
WARNING! Blood pressure measurements may be inaccurate if cuffs
and/or hoses other than those specified by Utech Co., Ltd. are
used.
NOTE! The NIBP Cuff Kit is latex-free.
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