Ключевые слова: abstract, amplitude, attack, background, beat, cardio, cardiogram, cardiograph, cardiology, care, chart, clinic, clinical, curve, design, diagram, effect, ekg, electrocardiogram, emergency, energy, frequency, glow, graph, graphic, healthy, heart, heartbeat, illumination, illustration, life, light, line, luminous, medical, medicine, monitoring, neon, pulsation, pulse, recording, rhythm, science, shape, stress, system, technology, test, wave,