Ключевые слова: abstract, amplitude, attack, background, beat, body, cardiac, cardiogram, cardiograph, cardiology, chart, curve, death, diagnosis, ecg, ekg, electrocardiogram, examining, graph, graphic, graphical, health, healthcare, healthy, heart, heartbeat, illustration, life, line, living, medical, medicine, monitor, monitoring, neon, normal, pattern, power, pulse, recording, rhythm, shape, stress, surveillance, technical, technology, trace, vitality, wave,