User’s Manual for Omega 12Patient Monitor
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11 NIBP
11.1 NIBP Description
This monitor uses the oscillometric method for measuring the non-invasive blood pressure
(NIBP). It is based on the principle that pulsatile blood flow through an artery creates oscillations
of the arterial wall. Oscillometric devices use a blood pressure cuff to sense these oscillations that
appear as tiny pulsations in cuff pressure. By measuring and analyzing at various cuff pressures,
the amplitude (which changes based on the pressure within the cuff) and the frequency of these
pulsations (which is dependent on the patient’s heart rate), oscillometric devices can
non-invasively determine blood pressure. Once the mean pressure is determined, the systolic and
diastolic pressures are calculated with reference to the mean.
This measurement can be used for adults, pediatrics and neonates.
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 deviations specified by IEC 60601-2-30.
NIBP measurement can be performed during electro-surgery and discharge of defibrillator.
11.2 NIBP Safety Information
WARNING
Be sure to select the correct patient category setting for your patient before measurement. Do
not apply the higher adult settings for pediatric or neonatal patients. Otherwise, it may
present a safety hazard.
Do not measure NIBP on patients with sickle-cell disease or any condition where skin
damage has occurred or is expected.
Use clinical judgement to determine whether to perform frequent unattended blood pressure
measurements on patients with severe blood clotting disorders because of the risk of
hematoma in the limb fitted with the cuff.
Do not use the NIBP cuff on a limb with an intravenous infusion or arterial catheter in place.
This could cause tissue damage around the catheter when the infusion is slowed or blocked
during cuff inflation.
Do not wear the cuff on the wound, otherwise it will cause further injury.
