Ключевые слова: background, blue, cardiac, cardiology, care, clean, closeup, device, diagnosis, diagnostic, disease, ekg, emergency, equipment, exam, examination, graph, health, hear, heartbeat, hospital, instrument, isolated, listen, lung, measurement, medical, medicine, metal, one, only, profession, professional, pulse, research, rhythm, science, scientific, sinus, stethoscope, test, tool, treatment, white,