Pulse oximetry is a non-invasive method of determining the degree of blood oxygen saturation. The method is based on the spectrophotometric method of determining blood oxygen saturation. It is performed using a pulse oximeter (read more detailed info on PulseOx.net).
To perform this technique, the pulse oximeter is placed on a part of the body that is relatively translucent and has a good blood flow, for example the fingers, toes or earlobe. The pulse oximeter emits lights with wavelengths, red and infrared, which pass sequentially from an emitter to a photodetector through the patient. The absorbance of each wavelength caused by arterial blood (pulsatile component) is measured, excluding venous blood, skin, bone, muscle, fat. With these data it will be possible to calculate the blood oxygen saturation.
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Types
Pulse oximeters come in a variety of shapes and sizes. Pulse readings may be taken from a variety of locations on the body. It isn’t only confined to fingers. There are many types of pulse oximeters on the market that collect data from various body parts and provide reliable results. The four main different types of pulse oximeters are as follows:
Oximeter for the fingertip
This is the most commonly used oximeter all over the world. Fingertip oximeters are simple to use and have reliable results. Simply place your finger in the cavity, and the meter will begin to read the data. On the led screen with observations and graphs, you can review the results at the end of the reading. Since no needle is inserted into the body, a fingertip oximeter is a painless way to get a pulse reading.
Oximeter on a Handheld
A handheld pulse oximeter, also known as a “SAT’s monitor,” is used to measure a person’s blood oxygen level. The handheld oximeter functions similarly to the fingertip oximeter, although with minor differences. It’s often used in hospitals where more precise data is needed due to legal issues. A wire is connected to the meter pad, and a probe attached to the patient’s finger transfers the reading. It also allows you to read with various body parts such as your foot, earlobes, finger, and toe.
Oximeter on the wrist
People with severe health problems use a wrist oximeter to constantly track their blood oxygen level and heart rate. It comes in the form of a watch-like structure that the patient wears on his or her wrist. The oximeter continues to read the data and beeps if there is a significant change. This allows the doctor to take proactive measures to protect the patient’s health.
Pulse oximeter for children
This oximeter is for babies and children under the age of three. Other oximeters are unable to provide reliable readings for such small body parts in infants. As a result, the pediatric pulse oximeter is your only choice. These pulse oximeters have an anti-motion sensor to prevent any erroneous readings due to children’s mischievous nature.
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Last update 2024-04-21. Price and product availability may change.