Ключевые слова: abstract, background, cardio, cardiologist, cardiology, chart, clinic, concept, curve, danger, desk, diagnosis, diagnostic, doctor, drawing, ecg, ekg, equipment, examination, graph, health, healthcare, healthy, heart, heart attack, heartbeat, hospital, ideas, illness, line, medical, medicine, office, paper, peak, pulse, record, research, results, science, scientific, survey, table, technology, tools, ventricular,