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2. 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]

3. 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).

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. Vital signs - Wikipedia

   en.wikipedia.org/wiki/Vital_signs

   The pulse is taken with the index finger and middle finger by pushing with firm yet gentle pressure at the locations described above, and counting the beats felt per 60 seconds (or per 30 seconds and multiplying by two). [11] The pulse rate can also be measured by listening directly to the heartbeat using a stethoscope.

6. 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.

7. Walgreens - Wikipedia

   en.wikipedia.org/wiki/Walgreens

   Walgreen Company (doing business as Walgreens) is an American pharmacy store chain and the second largest in the United States, behind CVS Health's CVS Pharmacy. [3] It specializes in filling prescriptions, health and wellness products, health information, and photo services. [4]