Pulse Oximeter - ZOLL AEV Operator's Manual

G I
ENERAL NFORMATION
Do not use the unit during magnetic resonance imaging (MRI) scanning unless it has the
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appropriate "MRI conditional" label. See "Using the ZOLL Ventilator in an MRI
Environment" for instructions on the use of MRI conditional units, which gives additional
Warnings and Cautions.
Do not operate the ZOLL Ventilator on a patient when the USB port is connected to any
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other device (you use the USB port only for servicing the ventilator).
The ZOLL-supplied ventilator circuit's labeling provides the resistance and compliance
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values for the circuits under normal operating conditions. If added accessories are used
(e.g. humidification, filters etc.), you should assure they do not degrade the performance of
the device.

Pulse Oximeter

Do not use the pulse oximeter as an apnea monitor.
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A pulse oximeter should be considered an early warning device. As a trend towards patient
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deoxygenation is indicated, blood samples should be analyzed by a laboratory co-oximeter
to completely understand the patient's condition.
Measurements: if the accuracy of any measurement does not seem reasonable, first check
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the patient's vital signs by alternate means and then check the pulse oximeter for proper
functioning.
Inaccurate measurements may be caused by:
Interfering Substances: carboxyhemoglobin may erroneously increase readings. The level of
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increase is approximately equal to the amount of carboxyhemoglobin present. Dyes, or any
substance containing dyes, that change usual arterial pigmentation may cause erroneous
readings.
Alarms: Check alarm limits each time the pulse oximeter is used to ensure that they are
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appropriate for the patient being monitored.
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Incorrect sensor application or use.
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Significant levels of dysfunctional hemoglobin (e.g. carboxyhemoglobin or
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methemoglobin).
Intravascular dyes such as indocyanine green or methylene blue.
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Exposure to excessive illumination, such as surgical lamps (especially ones with a
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xenon light source), bilirubin lamps, fluorescent lights, infrared heating lamps, or
direct sunlight (exposure to excessive illumination can be corrected by covering the
sensor with a dark or opaque material).
Excessive patient movement.
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Venous pulsations.
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Placement of a sensor on an extremity with a blood pressure cuff, arterial catheter,
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or intravascular line.
The pulse oximeter can be used during defibrillation, but the readings may be
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inaccurate for a short time.
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