Ключевые слова: abstract, alive, attack, background, beat, cardiac, cardio, cardiogram, cardiograph, cardiology, chart, concept, curve, death, digital, ecg, ekg, electrocardiogram, element, frequency, gold, graph, graphic, health, healthcare, healthy, heart, heartbeat, hospital, illustration, life, light, line, medical, medicine, meter, monitor, neon, normal, pulse, rate, rhythm, shining, symbol, technical, technology, wave, yellow,