Ключевые слова: blood, blood oxygen level, blood oxygen saturation, cardiac, cardiogram, cardiology, care, clinic, closeup, control, counter, display, electronic, electronics, emergency, exam, finger, health, health care, healthcare, heart, heartbeat, hospital, illness, level, machine, measure, measurement, medical, medicine, modern, monitor, monitoring, oximeter, oxygen, oxygen saturation, patient, pneumonia, pulse, pulse oximeter, rate, saturation, scientific, sensor, smart, technology, vital,