Ключевые слова: activity, analise, analysis, analyze, beat, blood, cardiology, ecg, ekg, electrocardiogram, electrocardiograph, exam, frequency, graph, green, grid, health, healthy, heart, heartbeat, illustration, life, line, medical, monitor, patient, pressure, pulsating, pulse, rate, rhythm, screen, sick, signal, spike, stress, terminal, test, vitality, wave,