Pulse Oximetry

Definition:

Pulse oximetry utilizes a pulse oximeter sensor to monitor the oxygenation of a person’s hemoglobin.

Amplitude:

normal: 95-100%

Typical Applications:

Clinically, oximeters are used as an indication of a subject’s oxygenation and potential need for supplemental oxygen.

Typical Setup:

Step 1:
Have the subject remove any nail polish on the finger(s) to be used for the measurement.
Step 2:
Clean the finger tip with an alcohol wipe.
Step 3:
Make sure that the pulse oximeter is oriented correctly on the subject’s finger.

Common Questions:

Q: Why do the readings I am getting seem inaccurate for a healthy subject?

A:

There could be several variables that interfere with accurate pulse oximeter values. Skin color, temperature, presence of fake nails and/or nail polish, light interference, and the thickness of the finger could all affect readings. See Typical Setup for tips about how to optimize the measurements.

Q: Why am I getting the readings 127 for "%O2 Saturation" and 511 for "Pulse Rate"?

A:

If the BioRadio™150 is not receiving a good signal from the finger sensor, it will display these values. Make sure the sensor is on the subject’s finger correctly. It may take up to 5 seconds for the new signal to be displayed.