Ключевые слова: analysis, analyzing, background, backgrounds, beat, cardiac, cardio, cardiogram, cardiology, chart, closeup, data, document, ecg, ekg, electrocardiogram, exam, frequency, graph, graphic, health, healthcare, healthy, heart, heartbeat, human, interval, line, low, man, medical, medicine, paper, pattern, peak, pulse, recorder, report, research, result, results, rhythm, rhythms, science, stress, strip, technology, test, wave, waveform,