> ## Documentation Index
> Fetch the complete documentation index at: https://docs.sonohealth.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Monitoring Oxygen at Home With COPD or Asthma

> How people with chronic lung conditions use a pulse oximeter at home, why oxygen targets are personalized, and the warning signs that need prompt care.

For people living with COPD, asthma, or other chronic lung conditions, a home pulse oximeter can be a useful way to track oxygen trends and notice changes early. But oxygen targets in lung disease are personal, and the device never replaces your care plan.

<Warning>
  A pulse oximeter doesn't treat breathing problems. Worsening breathlessness, a reading below your doctor's target, bluish lips, or confusion needs prompt medical attention — call 911 for severe symptoms.
</Warning>

## Why home oxygen monitoring can help

Tracking SpO2 over time can help you and your clinician understand your baseline and spot early signs of a flare, when readings drift down from your usual range. Many people pair this with a written action plan from their doctor — see our overview of [managing breathing at home](/nebulizer/breathing-relief-at-home).

## Why COPD targets are different

Healthy adults usually sit at [95–100%](/pulse-oximeter/normal-oxygen-levels), but people with COPD sometimes have a **lower, individualized target — often around 88–92%** — set by their doctor. That's because oxygen goals in chronic lung disease are tailored to your physiology, and "normal-person" cutoffs don't apply. Always use the specific range your clinician gives you.

## How to get reliable readings

[Accuracy depends on technique](/pulse-oximeter/overview): warm hands, no nail polish, sit still, and let the number settle. Cold extremities and poor circulation — common in some patients — can lower the reading artificially, so re-check before reacting.

## Warning signs to act on

* A reading **below your personal target**
* **Increasing breathlessness**, more rescue-inhaler use, or a change in your usual symptoms
* **Bluish lips or fingertips**, confusion, or extreme drowsiness — call 911

Don't keep re-testing if you're clearly struggling to breathe; get help.

## A tool within a plan

A home pulse oximeter, like the one SonoHealth offers, supports — but never replaces — your prescribed treatment and your doctor's guidance. Use it to inform conversations with your care team, not to make medication decisions on your own. Browse it at [SonoHealth.com](https://sonohealth.com/shop/).

***

**Related:** [Understanding Pulse Oximetry](/pulse-oximeter/overview) · [Normal Oxygen Levels](/pulse-oximeter/normal-oxygen-levels) · [COPD Management](/nebulizer/copd-management) · [Breathing Relief at Home](/nebulizer/breathing-relief-at-home)