Ключевые слова: analysis, background, beat, blood, body, cardio, cardiology, cardiovascular, care, checking, closeup, composition, concept, control, device, diagnostic, doctor, equipment, examination, fingertip, grey, health, heart, hypertension, hypotension, illness, level, light, measurement, measuring, medicine, modern, monitoring, nobody, object, oximeter, oxygen, portable, pressure, pulsation, pulse, pulsimeter, saturation, screen, sick, smart, sphygmomanometer, test, thermometer, treatment,