Pulse oximetry6/7/2023 So, if a patient has a heart condition, is dehydrated, or is critically ill causing a weak pulse, the oximeter readings will be inaccurate, or the device may not be able to generate anything at all.Īdditionally, the device may be placed incorrectly, have an improper fit, or get knocked out of place from movement or a sleeping position change. Pulse oximeters get their readings from the pulsation of blood through the arteries. It is essential that the device has a good signal, so readings are not falsely high or low, but sometimes this is difficult to obtain. While pulse oximeters are extremely useful, quick, and easy to use, there are some situations that can impede the device’s ability to produce accurate readings.
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