Ключевые слова: abstract, analysis, analyze, background, beat, blood, cardiac, cardio, cardiogram, cardiograph, cardiology, care, curve, diagnosis, display, ecg, electrocardiogram, electrocardiograph, emergency, equipment, frequency, graph, graphic, grid, health, healthcare, healthy, heart, heartbeat, life, line, love, medical, medicine, monitor, monitoring, pulse, rate, red, rhythm, signal, stress, technology, test, wave,