Bedienungsanleitung SunTech CT40 (Seite 26 von 52) (Englisch)

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80-0067-00-MO-RevJ 2019-01-30 SunTech CT40 User Manual | 26

CAUTION: Inaccurate measurements may be caused by:

Incorrect sensor application or use. Proper sensor uses, and placement is critical for good performance.

Significant levels of dysfunctional hemoglobin. (e.g., carboxyhemoglobin or methemoglobin)

Intravascular dyes such as indocyanine green or methylene blue.

Dyes or any substance containing dyes that affect light absorption may cause erroneous readings.

• Some nail polish colors (particularly dark shades) or artificial fingernails may reduce light transmission and

affect pulse oximetry accuracy. Remove any nail polish or artificial fingernails before using the SpO2 sensor.

Exposure to excessive illumination, such as surgical lamps (especially ones with a 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.

• Abnormal pulse rhythm.

Placement of a sensor on an extremity with a blood pressure cuff, arterial catheter, or intravascular line. Always place

the SpO2 sensor on the arm without a blood pressure cuff, arterial catheter, or intravascular line.

CAUTION: Pulse rate measurement is based on the optical detection of a peripheral flow pulse and therefore may not

detect certain arrhythmias. The pulse oximeter should not be used as a replacement or substitute for ECG based

arrhythmia analysis.

CAUTION: SpO2 is empirically calibrated to functional arterial oxygen saturation in healthy adult volunteers with

normal levels of carboxyhemoglobin (COHb) and methemoglobin (MetHb). A pulse oximeter cannot measure

elevated levels of COHb or MetHb. Increases in either COHb or MetHb will affect the accuracy of the SpO2

measurement.

CAUTION: COHb levels above normal tend to increase the level of SpO2. The level of increase is approximately equal

to the amount of COHb that is present.

CAUTION: High levels of COHb may occur with a seemingly normal SpO2. When elevated levels of COHb are

suspected, laboratory analysis (CO-Oximetry) of a blood sample should be performed.

CAUTION: For increased MetHb, the SpO2 may be decreased by levels of MetHb of up to approximately 10% to 15%.

At higher levels of MetHb, the SpO2 may tend to read in the low to mid 80s. When elevated levels of MetHb are

suspected, laboratory analysis (CO-Oximetry) of a blood sample should be performed.

CAUTION: Venous congestion may cause under reading of actual arterial oxygen saturation. Therefore, assure proper

venous outflow from monitored site. Sensor should not be below heart level (e.g. sensor on hand of a patient in a bed

with arm dangling to the floor).

CAUTION: Venous pulsations may cause erroneous low readings (e.g. tricuspid value regurgitation).

CAUTION: The pulsations from intra-aortic balloon support can be additive to the pulse rate on the oximeter pulse

rate display. Be sure to verify patient's pulse rate.

CAUTION: Elevated levels of Total Bilirubin may lead to inaccurate SpO2, measurements.

CAUTION: With very low perfusion at the monitored site, the readings may read lower than core arterial oxygen

saturation.

CAUTION: Do not immerse the sensor or patient cable in water or, solvents, or cleaning solutions (The sensors and

connectors are not waterproof).

CAUTION: Loss of pulse signal can occur in any of the following situations:

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