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2. Oxygen saturation (medicine) - Wikipedia

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

   The human body requires and regulates a very precise and specific balance of oxygen in the blood. 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 ...

3. Hypoxemia - Wikipedia

   en.wikipedia.org/wiki/Hypoxemia

   Hypoxemia is usually defined in terms of reduced partial pressure of oxygen (mm Hg) in arterial blood, but also in terms of reduced content of oxygen (ml oxygen per dl blood) or percentage saturation of hemoglobin (the oxygen-binding protein within red blood cells) with oxygen, which is either found singly or in combination. [2] [5]

4. Arterial blood gas test - Wikipedia

   en.wikipedia.org/wiki/Arterial_blood_gas_test

   (Note that a low PaO 2 is not required for the person to have hypoxia as in cases of Ischemia, a lack of oxygen in tissues or organs as opposed to arterial blood.) At a P a O 2 of less than 60 mm Hg, supplemental oxygen should be administered. Arterial carbon dioxide partial pressure (P a CO 2) 4.7–6.0 kPa 35–45 mmHg [13]

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

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

   One of those vital signs is blood oxygen level, and in the hospital, it’s measured with a pulse oximeter. Patients with Covid-19 can sometimes have relatively mild symptoms and seem to be ...

6. Everyone’s Buying These Pulse Oximeters — Here’s What They ...

   www.aol.com/everyone-buying-pulse-oximeters-don...

   Normal levels in otherwise-healthy adults range between 95% and 100%, according to the World Health Organization and other experts, while a blood oxygen level of 92% or less may indicate a serious ...

7. 'I Almost Died From Blood Clots In My Lungs At 62 ... - AOL

   www.aol.com/almost-died-blood-clots-lungs...

   At 62, Counihan was below the (declining) average age for death from a pulmonary embolism (68). Counihan did have a risk factor, though: Traveling abroad. Counihan did have a risk factor, though ...

8. Respiratory failure - Wikipedia

   en.wikipedia.org/wiki/Respiratory_failure

   Respiratory failure results from inadequate gas exchange by the respiratory system, meaning that the arterial oxygen, carbon dioxide, or both cannot be kept at normal levels. A drop in the oxygen carried in the blood is known as hypoxemia; a rise in arterial carbon dioxide levels is called hypercapnia. Respiratory failure is classified as ...

9. Hypoxia (medicine) - Wikipedia

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

   Experimentally, oxygen diffusion becomes rate limiting when arterial oxygen partial pressure falls to 60 mmHg (5.3 kPa) or below. [clarification needed] [61] Almost all the oxygen in the blood is bound to hemoglobin, so interfering with this carrier molecule limits oxygen delivery to the perfused tissues.