What is the best site in taking oxygen saturation?

The best site for taking oxygen saturation is the finger.

The pulse oximeter, a small device that clips onto the finger, shines a light through the fingertip and measures the amount of light that is absorbed by the oxygen-carrying hemoglobin in the blood. This measurement is then used to calculate the oxygen saturation level.

Other sites that can be used for pulse oximetry include the earlobe, the nose, and the forehead. However, the finger is generally considered to be the best site because it is:

* Easy to access

* Comfortable for the patient

* Has a good blood supply

* Relatively free of movement artifact

In some cases, it may be necessary to use a different site for pulse oximetry, such as when the finger is injured or swollen. In these cases, the earlobe or the nose can be used. However, it is important to note that the oxygen saturation levels obtained from these sites may not be as accurate as those obtained from the finger.