选择语言

Deutsch English (US) Français 日本語

SpO2 stands for peripheral capillary oxygen saturation, an estimate of the amount of oxygen in the blood. More specifically, it is the percentage of oxygenated haemoglobin (haemoglobin containing oxygen) compared to the total amount of haemoglobin in the blood ( oxygenated and non-oxygenated haemoglobin).

SpO2 is an estimate of arterial oxygen saturation, or SaO2, which refers to the amount of oxygenated haemoglobin in the blood.

Haemoglobin is a protein that carries oxygen in the blood. It is found inside red blood cells and gives them their red colour.

SpO2 can be measured by Pulseimetry, an indirect, non-invasive method (meaning it does not involve the introduction of instruments into the body). It works by emitting and then absorbing a light wave passing through blood vessels (or capillaries) in the fingertip. A variation of the light wave passing through the finger will give the value of the SpO2 measurement because the degree of oxygen saturation causes variations in the blood’s colour.

This value is represented by a percentage. If your Withings Pulse says 98%, this means that each red blood cell is made up of 98% oxygenated and 2% non-oxygenated haemoglobin. Normal SpO2 values vary between 95 and 100%.

Good blood oxygenation is necessary to supply the energy your muscles need in order to function, which increases during a sports activity. If your SpO2 value is below 95%, that could be a sign of poor blood oxygenation, also called hypoxia.

You can easily measure your SpO2 with the Withings Pulse. We remind you that the Withings Pulse is not a medical device and must not be used to diagnose or monitor a pathological condition.

这篇文章有帮助吗?

Didn't find what you need? Here's how to get in touch.

联系我们
To preserve the Withings Forum as a place of kindness, mutual support, and interest for the products and services provided by Withings, I am committed to:
  • Be courteous and participate in the community with a spirit of friendliness and understanding
  • Respect all users on the forum
  • Avoid controversy or quarrel
  • Ensure that my messages do not infringe on the rights, reputation, image, or privacy of others
  • Avoid any and all discussions which contain insulting or discriminatory comments
  • Abide by the full terms and conditions outlined here

Note that this community is supported by its members, not the Withings Support Team.

If you need assistance because of an issue which would not be resolved through troubleshooting, such as a product with physical damage, please contact our Support Team.