Ключевые слова: abstract, analysis, awareness, background, beat, blood, cardio, cardiogram, cardiograph, cardiology, care, chart, clinic, curve, diagnosis, disease, ecg, ekg, emergency, flat, frequency, graphic, health, healthcare, healthy, heart, heartbeat, icon, illustration, isolated, life, line, medical, medicine, monitor, patient, pressure, pulse, rate, red, rhythm, shape, sign, simple, stress, symbol, test, wave, white,