How to Verify a Pulse Oximeter

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    • 1). Perform a visual inspection of the unit for physical damage, sensor or cable wear, and battery or battery compartment problems.

    • 2). Turn on the pulse oximeter unit. Check the illumination of all indicators and the display, and listen for the test sounding of the warning tones.

    • 3). Clip the sensor on the test subject's finger. Make sure the sensor cable is firmly connected to the display unit if the sensor is separate from it.

    • 4). Initiate a test, then wait for and record the SpO2 (oxygen saturation) and pulse results.

    • 5). Measure the test subject's pulse using the comparison method chosen.

    • 6). Compare pulse readings to ensure they are within the appropriate tolerance of plus or minus approximately five beats per minute (usually about 2 beats per minute or 2 percent for the device, blood pressure cuff tolerance is typically 5 percent).

    • 7). Verify that the healthy subject's oxygen saturation (SpO2) reading is within the appropriate range (usually 94 to 99 percent).

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