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Monitoring Noninvasive Blood Pressure; Introducing The Oscillometric Noninvasive Blood Pressure Measurement - Philips FM20/30 Instructions For Use Manual

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Monitoring Noninvasive Blood
This monitor uses the oscillometric method for measuring NBP.
A physician must determine the clinical significance of the NBP information.
Introducing the Oscillometric Noninvasive Blood
Pressure Measurement
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.
Studies show that, especially in critical cases (arrhythmia, vasoconstriction, hypertension, shock),
oscillometric devices are more accurate and consistent than devices using other noninvasive measuring
Intravenous infusion: Do not use the NBP 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.
Skin Damage: Do not measure NBP in cases of sickle-cell disease or any condition where skin
damage has occurred or is expected.
Existing Wounds: Do not apply the cuff over a wound as this can cause further injury.
Mastectomy: Avoid applying the cuff on the side of the mastectomy, as the pressure increases the risk
of lymphedema. For patients with a bilateral mastectomy, use clinical judgement to decide whether the
the benefit of the measurement outweighs the risk.
Unattended Measurement: Use clinical judgement to decide whether to perform frequent
unattended blood pressure measurements. Too frequent measurements can cause blood flow
interference potentially resulting in injury to the patient. In cases of severe blood clotting disorders
frequent measurements increase the risk of hematoma in the limb fitted with the cuff.
Temporary Loss of Function: The pressurization of the cuff can temporarily cause loss of function
of monitoring equipment used simultaneously on the same limb.


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