S12 Vet Monitor User’s Manual
12-1
Chapter 12 NIBP
12.1. Introduction
The monitor uses the oscillometric method for measuring the non-invasive blood
pressure (NIBP). NIBP measurement is based on the principle that pulsatile blood flow
through an artery creates oscillations of the arterial wall. The oscillometric device uses a
blood pressure cuff to sense these oscillations that appear as tiny pulsations in cuff
pressure. The oscillometric devices measure the amplitude of pressure changes in the
occluding cuff as the cuff deflates from above systolic pressure. The amplitude suddenly
increases as the pulse breaks through the occlusion in the artery. As the cuff pressure
decreases further, the pulsations increase in amplitude, reach a maximum (which
approximates to the mean pressure), and then diminish. The oscillometric method
measures the mean pressure and determines the systolic and diastolic pressures.
NOTE
:
Blood pressure measurements determined with this device are equivalent to
those obtained by a trained observer using the cuff/stethoscope auscultatory
method or an intra-arterial blood pressure measurement device, within the
limits prescribed by IEC 80601-2-30.
NIBP measurement can be performed during electro-surgery and discharge of
defibrillator.
12.2. Safety Information
WARNING:
Be sure to select the correct patient category setting for your patient before
NIBP measurement.
Do not measure NIBP on patients with sickle-cell disease or on the limb where
skin damage has occurred or is expected.
Use clinical judgment to determine whether to perform frequent automatic
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