Ключевые слова: background, blood, blood pressure, cardiac, cardiology, cardiovascular, cardiovascular disease, care, check, digital, doctor, equipment, examination, finger, hand, health, health care, healthcare, heart, heartbeat, hospital, illness, instrument, machine, measure, measurement, medical, medicine, meter, modern, monitor, monitoring, oximeter, oxy, oxygen, oxymeter, patient, puls, puls oxymeter, pulse, pulse oximeter, pulse oximetry, saturation, sensor, technology, vital,