Ключевые слова: cardiac, cardio, cardiogram, cardiograph, cardiology, cardiovascular, checkup, data, diagnosis, disease, ecg, electro cardiograph, electrocardiogram, electrocardiograph, equipment, failure, flutter, graph, health, healthcare, heartbeat, measurement, medical, pace maker, pacemaker, paper, pathology, peak, plot, print, pulse, pump, sickness, wveform,