Oximeter main measurement indicators were pulse rate, oxygen saturation, perfusion index (PI). Oxygen saturation (SpO2) is one of the most important basic data in clinical medicine. Oxygen saturation refers to the percentage of bound O2 capacity in total blood volume that is all bound O2 capacity.

measurement standard

Oximeter main measurement indicators were pulse rate, oxygen saturation, perfusion index (PI).

Pulse rate

Pulse refers to the beat of superficial arteries. Normal people's pulse and heartbeat are the same.

Heart rate is the frequency of heart beats. The average person is between 60-90 times per minute. However, people tend to experience rapid heartbeats in situations such as exercise and stress.

Pulse rate is the number of pulses per minute.

Pulse rate and heart rate are consistent under normal conditions. When the atrial fibrillation or frequent pre-systolic pulse rate is less than the heart rate

Oxygen saturation (oxygen saturation, abbreviated as SO2) is one of the most important basic data in clinical medicine.

The oxygen consumed by the human body is mainly derived from hemoglobin (in the normal blood, there are four types of hemoglobin: oxygenated hemoglobin (HbO2), reduced hemoglobin (Hb), carboxyhemoglobin (CoHb), and methemoglobin (MetHb). Reversible hemoglobin is reversibly combined, and oxygen and carbon oxyhemoglobin and methemoglobin are not combined with oxygen.) Oxygen carried. The oxygen content in the blood is usually referred to as the oxygenated hemoglobin in the blood, and the physical oxygen saturation is used to describe the oxygen content in the blood.

Oxygen saturation refers to the percentage of bound O2 capacity in total blood volume that is all bound O2 capacity.

Normal human arterial blood oxygen saturation is 98%, and venous blood is 75%.

It is an important indicator to reflect the oxygen status in the body. It is generally believed that the normal value of blood oxygen saturation should not be less than 94%, and less than 94% is considered as insufficient oxygen supply.