Darwinism : The Most Important Contribution of the Victorian Era. By Zachary L., Holmdel, NJ. More by this author. Charles Darwinâs revolutionary idea of evolution sparked dramatic debate in the scientific and, most especially, religious communities, as well as inspiring a new wave of thought in the minds of the world.
Pulse oximetry is a procedure used to measure the oxygen level (or oxygen saturation) in the blood. It is considered to be a noninvasive, painless, general indicator of oxygen delivery to the peripheral tissues (such as the finger, earlobe, or nose).
Preparing to Use a Pulse Oximeter. 1  1. Understand the relationship between oxygen and the blood. Oxygen is breathed into the lungs. 2  2. Understand the reasons for the procedure. Pulse oximetry is used to assess oxygen saturation in the blood for a variety of reasons. 3  3. Understand how the pulse oximeter works.