Ключевые слова: adult, background, blood, cardiac, care, check, clinic, closeup, coronavirus, covid19, device, digital, display, electronic, equipment, finger, fingertip, fingertip pulse oximeter, hand, health, heart rate, heartbeat, hemoglobin, hospital, level, machine, man, measure, measurement, measurements, medical, medicine, meter, modern, monitor, monitoring, oximeter, oximetry, oxygen, oxygen saturation, oxygen saturation level, patient, person, portable, pressure, pulse, rate, saturation, technology, vital,