| umls-concept:C0182408 | skos:definition | UMD: Probes designed for use with a pulse oximeter to determine the oxygen saturation of hemoglobin (SpO2) based on the light absorbance of a patient's arterial blood. These probes typically include two light emitting diodes (LEDs) that transmit red and infrared light (e.g., wavelengths of 660 and 930 nm respectively) through the pulsating arterial bed and a photodetector that senses the light after it passes through the arterial bed and then sends the information through a cable to the oximeter for signal processing and display. Probes are manufactured in appropriate configurations for placement on the finger tips, earlobe, toe, or even the forehead (for reflectance pulse oximeters); they are typically attached using disposable adhesive wraps and/or clips. Some probes include a memory chip that contains the calibration and operating data of the individual sensor. Oximeter probes are available in sizes for adult, pediatric, or newborn, either for single patient use or reusable. | lld:umls |
