What is the normal value for a finger pulse oximeter?

Feb 06, 2025 Source: Cainiu Health

Dr. Tian Hongbo

Introduction

A finger pulse oximeter is primarily used to measure blood oxygen saturation and pulse rate. Under normal circumstances, the normal range for blood oxygen saturation is 95% to 100%. The normal range for pulse rate is 60 to 100 beats per minute. When using a pulse oximeter, it is important to ensure that the finger is warm, has good blood circulation, and is free from external interfering factors.

A finger pulse oximeter is primarily used to measure blood oxygen saturation and pulse rate. Under normal circumstances, the normal range for oxygen saturation is 95% to 100%. The normal range for pulse rate is 60 to 100 beats per minute. If abnormalities are detected, prompt medical consultation is recommended. Detailed explanations are as follows:

Using infrared light technology, a finger pulse oximeter measures the ratio of oxygenated hemoglobin to deoxygenated hemoglobin in the blood, thereby determining the blood oxygen saturation level, which typically falls between 95% and 100%. This range indicates sufficient oxygen supply in the blood to meet the needs of the body's organs and tissues. If oxygen saturation falls below 95%, it may suggest hypoxia, and further examination is needed to identify the cause.

The normal pulse rate range displayed by a finger pulse oximeter is 60 to 100 beats per minute. Pulse rate refers to the frequency of arterial pulsations, which reflects the heart rate to some extent. Normally, each heartbeat generates one pulse, and the pulse rate remains stable between 60 and 100 beats per minute, indicating normal cardiac pumping function and systemic circulation.

The measurement results of a finger pulse oximeter can be influenced by multiple factors, such as finger temperature, circulation status, nail polish, or artificial nails. Therefore, when using an oximeter, ensure the finger is warm, circulation is adequate, and external interfering factors are avoided.

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