Ключевые слова: analysis, background, beat, cardiac, cardio, cardiogram, cardiograph, cardiology, care, chart, checkup, clinic, curve, design, diagnosis, disease, ecg, ekg, electrocardiogram, emergency, frequency, graph, graphic, health, healthy, heart, heartbeat, hospital, illustration, isolated, life, logo, medical, medicine, monitor, monitoring, patient, pressure, pulse, rate, rhythm, shape, sign, symbol, technology, test, wave, website,