Ключевые слова: app, background, blood, cardiac, cardiology, care, check, clinic, closeup, device, digital, disease, doctor, electronic, equipment, exam, finger, hand, health, health care, heart, heartbeat, hospital, instrument, level, machine, measure, measurement, medical, medicine, modern, monitor, monitoring, oximeter, oximetry, oxygen, patient, people, person, pressure, pulse, rate, saturation, sensor, spo2, technology, test, tool, treatment, woman,