Ключевые слова: analysis, analyzing, background, beat, cardiac, cardio, cardiogram, cardiological, cardiologist, cardiology, cardiovascular system, care, clinic, closeup, diagnosis, diagnostic, disease, ecg, ecg graph, ekg, electrocardiogram, electrocardiograph, emergency, equipment, examination, frequency, graph, heart, heart rate, heartbeat, hospital, line, measuring, medical, medical exam, medical test, nobody, patient, pulse, pulse trace, research, result, rhythm, technology, test, trace,