What is a pulse oxymmetric probe?

Pulse oximeters is a portable, non -invasive computer device that allows healthcare workers or carers to measure the amount of hemoglobin in red blood cells saturated with oxygen or _{2 . The device consists of a pulse oxymmetry probe that connects to the patient's finger, tip, nose bridge, or ear an ear and a computer unit that shows subsequent reading, usually in numbers as a percentage. This reading is referred to as "oxygen saturation level" or "o 2 sat". Normal values ​​range from 95 to 99 percent for a healthy individual. The probe measures the percentage of oxygenated hemoglobin using both red and infrared types of light. These light beams are projected by a thin vascular tissue from one side of the probe on the photodetector on the opposite side of the probe clip. The themes of the remaining light after oxygenated hemoglobin is then measured by the photodetector, converted to a comparable percentage of oxygen saturation and displayed by a computer unit.}

accurate oxygen saturation values ​​require pulse oxymmetry probe correctly. They must be cropped with the emitters of the light signal directly opposite the photodettor to the tissue area with adequate blood perfusion, which means that the nutrient -rich blood from arteries is supplied to capillaries. The digital pulse oxymmetry probe cannot provide valid values ​​when used on fingers with a dark colored nail polish or significant bruises under nail beds. The movement of the limbs with the oximetric probe attached often causes temporary erroneous values ​​that can be ignored. These values ​​differ from low saturation values ​​demonstrated with patient activity that exceeds oxygenating ability or those suffering from sleep apnea.

oxemic values ​​of oximeter unit should not consider accurate with demonstration of hypoxic symptoms such as cyanosis, fast respiratory velocity or difficultyím. Pulse oxymmetric probe is a valuable tool, but has restrictions. Attempting to use in a patient with a known circulation deficiency or cardiac arrest will result in incorrect value. Furthermore, the pulse oxymmetry probe cannot distinguish between hemoglobin linked to oxygen versus hemoglobin bound to carbon monoxide. Thus, the deductions made in a patient with suspected carbon monoxide poisoning will also be incorrect.

Finally, the pulse oxymmetry probe does not provide carbon dioxide levels, acid levels (PH) and partial carbon dioxide and oxygen pressure. These results are only available if the arterial blood test (ABG) is performed. The blood is withdrawn from the radial artery by the patient with a needle and the blood tube is sent to the laboratory before deductions. Before developing a portable oximeter and probe pulse oxymmetry, this was a method used to obtain oxygen saturation levels.