Mallinckrodt NPB-190 Manuel de l'opérateur télécharger pdf (Page 25)

Sensors and Accessories

PERFORMANCE CONSIDERATIONS

WARNING: Pulse oximetry readings and pulse signal can be

affected by certain ambient environmental conditions, sensor

application errors, and certain patient conditions.

Inaccurate measurements can be caused by:

• incorrect application of the sensor

• placement of the sensor on an extremity with a blood

pressure cuff, arterial catheter, or intravascular line

• ambient light

• excessive patient movement

• venous pulsations

• intravascular dyes, such as indocyanine green or methylene

blue

• defibrillation

Other physiological conditions or medical procedures that may

interfere with the monitor’s measurements include significant

levels of dysfunctional hemoglobin, low perfusion, and dark

pigment.

Loss-of-pulse signal can occur for the following reasons:

• the sensor is too tight

• a blood pressure cuff is inflated on the same extremity as the

one with the sensor attached

• there is arterial occlusion proximal to the sensor

Select an appropriate sensor, apply it as directed, and observe all

warnings and cautions presented in the directions for use

accompanying the sensor. Clean and remove any substances such

as nail polish from the application site. Periodically check to

ensure that the sensor remains properly positioned on the patient.

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Mallinckrodt NPB-190 Manuel de l'opérateur Page 25