Monitor Blood Oxygen Finger Oximeter

Monitor blood oxygen Finger Oximeter:Blood oxygen saturation refers to the percentage of bound O2 volume in total blood volume.The oxygen saturation of normal human arterial blood is 98% and that of venous blood is 75%.It is an important index to reflect the oxygen status in the body. It is generally considered that the normal value of blood oxygen saturation should not be less than 94%, and below 94% is regarded as insufficient oxygen supply.

Perfusion index (PI)

Generally, PI, as a parameter index, can reflect the limb perfusion of the tested person, indicating the detection accuracy of the machine. That is, it can still be detected under the conditions of low perfusion and weak perfusion.

Moreover, the display of PI can also indicate the physical condition of the tested person, that is, when low perfusion occurs, it can indicate whether the tested person has its own causes, such as heart problems, shock, etc. at the same time, it can also reflect whether there are external factors, such as cold weather, poor peripheral circulation, etc., so as to judge from the above situations!

PI refers to the perfusion index (PI). The pI value reflects the pulsating blood flow, that is, the blood perfusion capacity. The larger the pulsating blood flow, the more the pulsating component, and the larger the pI value. Therefore, the blood perfusion of the measured parts (skin, nails, bones, etc.) and the patient itself (arterial blood flow) will affect the pI value. Because the sympathetic nerve will affect the heart rate and arterial blood pressure (pulse and arterial blood flow), the human neuroregulatory system or mental state will also indirectly affect the pI value. Therefore, the pI value will be different under different anesthesia conditions.

Monitor blood oxygen Finger Oximeter contains a microprocessor, a memory (EPROM and RAM), two digital to analog converters controlling LEDs, a device for filtering and amplifying the signal received by the photodiode, and an analog-to-digital converter for digitizing the received signal to the microprocessor. The LED and photodiode are placed in a small probe in contact with the patient's fingertip or earlobe. Pulse oximeter generally also includes small liquid crystal display.

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