Ключевые слова: background, blood, cardiac, closeup, device, finger, fingertip, gel polish, heart, heartbeat, hemoglobin, hospital, instrument, level, low, manicure, measure, medic, meter, modern, monitor, oximeter, oximetry, oxygen, oxygenation, patient, pneumonia, pressure, pulse, rubber, saturation, sensor, spo2, using, white, woman, workplace,