Ключевые слова: background, beat, blood, body, cardio, cardiology, cardiovascular, care, checking, composition, concept, control, device, diagnostic, doctor, equipment, examination, fingertip, grey, health, heart, hypertension, hypotension, illness, level, light, measurement, measuring, medicine, modern, monitoring, object, oximeter, oxygen, portable, pressure, pulsation, pulse, pulsimeter, rate, rhythm, saturation, screen, sick, smart, stethoscopes, test, top, treatment, view,