Monitor mode - NIBP
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Physics principle used
DualMax uses oscillometric mode to calculate Non-Invasive blood pressure. A armband
is used to convey arterial pressure changes caused by blood flow. The armband is
insuflated to a pressure higher than systolic pressure in order to occlude blood flow
in extremities. Gradually, armband pressure is reduced generating little pulses or
oscillations.
Mean pressure is the lowest pressure in the armband, in which detected oscillation
peaks have higher amplitude. Systolic pressure occurs when oscillation increases
quickly and diastolic pressure occurs when oscillation decreases in the same intensity.
As a characteristic of oscillometric mode, mean pressure is the most precise one.
Warnings
If you suspect a cable or conductor is ruptured, avoid using the equipment
due to possible risk to the operator.
The armband must not be applied on the same limb or extremity where
the SpO
2
sensor is. When inflating the armband, SpO
2
monitoring may be
affected.
Do not place armband on limb or extremity which is being used for
intravenous infusion, or in any area where circulation is compromised.
The DualMax shows the results of the last NIBP measurement until a new
measurement is obtained. If the patient’s conditions change between
measurements, the monitor will not detect it.
Patient’s excessive movements may cause imprecise measurements.
During NIBP monitoring, avoid compression or restriction of the pressure
tubes.
The NIBP connection is protected against defibrillation discharges. It is not
necessary to remove the armband from the patient or disconnect it in case of
defibrillation.
In case the equipment is accidentally wet, dry it with a clean cloth.
A doctor should be consulted to interpret the non-invasive blood pressure
measures.
Non-invasive Blood Pressure measurements are not intended for use during
procedures with high frequency surgical equipment such as electro scalpel.
Non-invasive Blood Pressure measures are not intended for use during
patient transportation, out of the medical environment.
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