Ключевые слова: background, care, device, diagnostic, digital, display, electronic, equipment, finger, fingertip, health, healthcare, heartbeat, instrument, level, mask, measure, measurement, medical, medicine, modern, monitor, monitoring, nobody, oximeter, oxygen, oxygenation, pills, pneumonia, portable, pulse, pulse oximeter, rate, saturation, scientific, sensor, technology, thermometer, treatment, white,