Ключевые слова: background, blood, cardiac, care, check, clinic, closeup, device, digital, electronic, equipment, finger, fingertip, gloves, health, heartbeat, hemoglobin, items, level, machine, mask, measure, measurement, measuring, medic, medical, medicine, modern, monitor, monitoring, nobody, object, oximeter, oximetry, oxygen, oxymeter, pressure, pulse, rate, saturation, screen, technology, tool, vital, white,