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2. What Is a Normal Oxygen Level and How Can I Check Mine? - AOL

   www.aol.com/normal-oxygen-level-check-mine...

   Nobody’s going to have a cardiac arrest with a blood oxygen level in that [94] range.” If someone has heart or lung disease, says Dr. Uppal, those “normal” numbers may be a bit lower ...

3. Oxygen saturation (medicine) - Wikipedia

   en.wikipedia.org/wiki/Oxygen_saturation_(medicine)

   Normal arterial blood oxygen saturation levels in humans are 96–100 percent. [1] If the level is below 90 percent, it is considered low and called hypoxemia. [2] Arterial blood oxygen levels below 80 percent may compromise organ function, such as the brain and heart, and should be promptly addressed.

4. Arterial blood gas test - Wikipedia

   en.wikipedia.org/wiki/Arterial_blood_gas_test

   An arterial blood gas (ABG) test, or arterial blood gas analysis (ABGA) measures the amounts of arterial gases, such as oxygen and carbon dioxide.An ABG test requires that a small volume of blood be drawn from the radial artery with a syringe and a thin needle, [1] but sometimes the femoral artery in the groin or another site is used.

5. Pulmonary hypertension - Wikipedia

   en.wikipedia.org/wiki/Pulmonary_hypertension

   It relieves pressure on the right side of the heart, but at the cost of lower oxygen levels in blood . Lung transplantation replaces a chronic condition with the ongoing need for treatment. [92] There is a post-surgical median survival of just over five years. [93]

6. Hyperoxia - Wikipedia

   en.wikipedia.org/wiki/Hyperoxia

   Excessive exposure to oxygen can lead to oxygen toxicity, also known as oxygen toxicity syndrome, oxygen intoxication, and oxygen poisoning.There are two main ways in which oxygen toxicity can occur: exposure to significantly elevated partial pressures of oxygen for a short period of time (acute oxygen toxicity), or exposure to more modest elevations in oxygen partial pressures but for a ...

7. Obesity hypoventilation syndrome - Wikipedia

   en.wikipedia.org/wiki/Obesity_hypoventilation...

   In some occasions, the oxygen levels are persistently too low (oxygen saturations below 90%). In that case, the hypoventilation itself may be improved by switching from CPAP treatment to an alternate device that delivers "bi-level" positive pressure: higher pressure during inspiration (breathing in) and a lower pressure during expiration ...