pulse oximeter
B1CEFR level
35/100Rarity: fairly common
TechnicalRegister
A non-invasive device clipped to a finger to measure oxygen saturation and pulse rate.
Place the pulse oximeter on the patient's index finger and record the reading.
Rarity runs from 0 (a word everyone knows) to 100 (almost never seen outside specialist or literary writing). Level is the word's real difficulty on the CEFR scale, from A1 to C2.
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