Ключевые слова: analysis, analyze, attack, beat, cardiac, cardio, cardiogram, cardiology, care, chart, clinic, diagnosis, disease, doctor, ecg, ekg, electrocardiogram, electrocardiograph, emergency, equipment, examination, frequency, graph, graphic, health, healthcare, healthy, heart, heartbeat, hospital, illness, life, line, medical, medicine, monitor, paper, pattern, pulse, rhythm, science, sick, technology, test, trace,