Ключевые слова: arrhythmia, beat, blood, bradycardia, cardiac, cardio, cardiogram, cardiograph, cardiology, care, chart, curve, design, diagnosis, ecg, ekg, electrocardiogram, emergency, frequency, graph, graphic, grid, health, healthcare, healthy, heart, heartbeat, hospital, illustration, irregular, life, line, medical, monitor, normal, normal sinus rhythm, pulsating, pulse, rate, red, rhythm, screen, sign, signal, sinus, symbol, test, wave,