---
title: Can SpO2 fall in deep sleep?
description: Yes. Brief falls can occur during deep sleep and are not necessarily dangerous.
---

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May 21, 2026

# Can SpO2 fall in deep sleep?

## Short-term falls during deep sleep can be normal, so it is important to look at the development over time and the child's general condition.

Yes. Short-term falls can occur during deep sleep and are not necessarily dangerous. Such changes are often associated with normal sleep phases and usually resolve on their own. The most important thing is how the values ​​develop over time and how the child is otherwise feeling. If you see a longer duration, clear fall combined with the child appearing restless, lethargic or different than usual, you should always follow the usual advice for follow-up and consider contacting healthcare.

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