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You are here : 3-RX.com > Medical Encyclopedia > Tests and Exams > Pulse Oximetry: Results and Values
      Category : Health Centers > Respiratory System (Lungs and Breathing)

Pulse Oximetry

Alternate Names : Oxygen Saturation, O2 Saturation

Pulse Oximetry | Preparation & Expectations | Results and Values

What do the test results mean?

A reading lower than 90% may be due to any factor which affects blood, hemoglobin, and oxygen circulation in the body. These may include:

  • excessive bleeding
  • lung problems, such as pneumonia
  • cigarette smoking
  • blood vessel problems
  • long-standing respiratory disease, or chronic obstructive pulmonary disease. Below normal SaO2 readings may be the norm for individuals with this condition.
  • If any of these complications are present, the healthcare provider may order additional tests to better assess oxygen saturation.

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    Pulse Oximetry: Preparation & Expectations


    Author: Pam Rosenthal, RN, BSN, CCM
    Reviewer: Gail Hendrickson, RN, BS
    Date Reviewed: 09/04/01

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