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2. The problem with pulse oximeters your doctor probably ... - AOL

   www.aol.com/news/problem-pulse-oximeters-doctor...

   Pulse oximeters came along in the 1980s as an easy and painless alternative. The device shines a light through the fingertip, seeking out oxygen-rich blood.

3. Pulse oximetry - Wikipedia

   en.wikipedia.org/wiki/Pulse_oximetry

   A pulse oximeter probe applied to a person's finger. A pulse oximeter is a medical device that indirectly monitors the oxygen saturation of a patient's blood (as opposed to measuring oxygen saturation directly through a blood sample) and changes in blood volume in the skin, producing a photoplethysmogram that may be further processed into other measurements. [4]

4. Photoplethysmogram - Wikipedia

   en.wikipedia.org/wiki/Photoplethysmogram

   [1] [2] A PPG is often obtained by using a pulse oximeter which illuminates the skin and measures changes in light absorption. [3] A conventional pulse oximeter monitors the perfusion of blood to the dermis and subcutaneous tissue of the skin. Finger pulse oximeter. With each cardiac cycle the heart pumps blood to the periphery. Even though ...

5. CO-oximeter - Wikipedia

   en.wikipedia.org/wiki/CO-oximeter

   Finger tip carboxyhemoglobin saturation monitor.. A CO-oximeter is a device that measures the oxygen carrying state of hemoglobin in a blood specimen, including oxygen-carrying hemoglobin (O2Hb), non-oxygen-carrying but normal hemoglobin (HHb) (formerly, but incorrectly, referred to as 'reduced' hemoglobin), as well as the dyshemoglobins such as carboxyhemoglobin (COHb) and methemoglobin (MetHb).

6. Walgreens plans to close a significant number of stores. Are ...

   www.aol.com/walgreens-plans-close-significant...

   A spokesperson for Walgreens said that about 25% of the stores were not contributing to the chain's long-term strategy, per the Columbus Dispatch, and as a result, will close a "significant ...

7. Duane Reade - Wikipedia

   en.wikipedia.org/wiki/Duane_Reade

   Duane Reade Inc. (/ d w eɪ n ˈ r iː d / dwayn REED) is a chain of pharmacy and convenience stores owned by Walgreens.Its stores are primarily in New York (metropolitan New York City and Nassau, Suffolk, Westchester, Rockland, and Fairfield counties) in addition to in New Jersey.