Hypoxemia (low blood oxygen)

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When to see a doctor

By Mayo Clinic staff

Call 911 or get emergency medical help if you have:

  • Severe shortness of breath that comes on suddenly and affects your ability to function
  • Severe shortness of breath with headache, insomnia, fluid retention and cough at high elevations (above 8,000 feet) — these are symptoms of high-altitude pulmonary edema (HAPE), which can be fatal without appropriate care

See your doctor as soon as possible if you have:

  • Shortness of breath after slight exertion or when you're at rest
  • Shortness of breath that gets worse when you exercise or are physically active
  • Abrupt awakenings with shortness of breath or with a dry throat and mouth — these may be symptoms of sleep apnea

Self-care
To help keep chronic shortness of breath from getting worse:

  • Stop smoking. If you've been diagnosed with COPD or other lung disease, the single most important thing you can do is to quit smoking.
  • Avoid passive smoke. In addition to quitting smoking, it's important to avoid places where others smoke. Secondhand smoke can cause further lung damage.
  • Get regular exercise. It may seem difficult to exercise when you have trouble breathing, but regular exercise can improve your overall strength and endurance and strengthen your respiratory muscles.

MY00219

Sept. 26, 2008

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