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    Pulse Oximeters

    Critical for COPD, asthma, heart issues.

    Cost

    $20-$40. Drug store or Amazon. Reliable basics.

    Normal range

    95-100% oxygen saturation. Below 92% = call doctor.

    Best for

    • COPD
    • Asthma
    • Heart failure
    • Sleep apnea check
    • COVID symptoms

    Apple Watch

    Series 6+. Built-in oxygen. Less accurate but always on wrist.

    When to use

    Daily for COPD/heart failure. Or if feeling short of breath.

    Tips

    Warm fingers. Remove polish. Sit still 30 seconds.

    Quick Tip: Below 88% sustained = oxygen therapy needed. Doctor immediately.