Ключевые слова: analaysis, analysis, background, beat, cardiac, cardiogram, cardiology, care, chart, checkup, clean, clinic, closeup, concept, data, diagnosis, diagnostic, disease, electrocardiogram, equipment, examination, graph, health, healthcare, healthy, heart, heartbeat, help, hospital, illness, life, medical, medicine, metal, paper, protection, pulse, red, research, science, sheet, sickness, small, stethoscope, table, technology, test, treatment, white, wooden,