Ключевые слова: background, blood, blue, cardiac, care, check, clinic, color, device, digital, electronic, equipment, finger, fingertip, flat, health, heartbeat, hemoglobin, lay, level, light, machine, measure, measurement, measuring, medic, medical, medicine, modern, monitor, monitoring, nobody, object, oximeter, oximetry, oxygen, oxymeter, pressure, pulse, rate, saturation, screen, technology, thermometer, tool, top, view, vital,