How to read a finger oximeter
Feb 06, 2025
Source: Cainiu Health
Dr. Tian Hongbo
Introduction
A finger oximeter is mainly used to measure arterial blood oxygen saturation and pulse rate. It is important to observe the difference between the measured values and the normal parameter ranges. The normal range for arterial blood oxygen saturation is generally 95% to 100%, and a pulse rate of 60 to 100 beats per minute may be considered normal; however, the specific normal parameters can vary among different populations.
The finger pulse oximeter is primarily used to measure arterial blood oxygen saturation and pulse rate. The body's condition can be assessed by observing the difference between measured values and the normal parameter range. Normal arterial blood oxygen saturation typically ranges from 95% to 100%, and a pulse rate between 60 to 100 beats per minute may be considered normal. However, the normal parameter range may vary among different populations. If abnormalities are detected, timely medical consultation is recommended. Detailed analysis is as follows:
The pulse oximeter is mainly used to measure arterial blood oxygen saturation. In healthy individuals, the normal range for arterial blood oxygen saturation is generally between 95% and 100%. In some high-altitude regions or among individuals with certain cardiopulmonary diseases, arterial blood oxygen saturation may be slightly lower. If arterial blood oxygen saturation remains consistently below 95%, it may indicate that the body is in a state of hypoxia and requires attention.
The pulse oximeter can also generally measure pulse rate, which refers to the number of heartbeats per minute. The normal pulse rate for healthy adults typically ranges from 60 to 100 beats per minute. The pulse rate may temporarily increase after exercise, emotional excitement, or consumption of stimulants such as caffeine or alcohol; during sleep or certain pathological conditions, the pulse rate may decrease. If the pulse rate remains persistently abnormal, either too fast or too slow for a prolonged period, further medical evaluation is necessary.
Before using a finger pulse oximeter, ensure the finger is clean, dry, and free of foreign objects. It is usually recommended to place the index finger, middle finger, or ring finger into the silicone finger slot of the oximeter. Ensure the finger is correctly positioned and securely clamped. Wait until the clamp automatically opens or according to the time specified in the instructions before reading the data.
