Ключевые слова: amplitude, analyzing, background, backgrounds, beating, blue, care, change, changing, chart, close up, computer, condition, damage, decoding, ecg, equipment, exam, form, graph, graphic, healthcare, heart, heart rate, heartbeat, horizontal, medical, medicine, myocardial infarction, nobody, paper, pattern, printout, pulsating, pulse, reading, science, shape, striped, supplies, symbol, taking, technical, technology, trace, voltage, wave,