Ключевые слова: analysis, background, beat, blood pressure, cardiac, cardiogram, cardiology, closeup, diagnosis, disease, ecg, ekg, electrocardiogram, electrocardiograph, exam, examination, graph, health, healthcare, healthy, heart, heart attack, heart beat, heartbeat, hospital, illness, life, medical, medicine, monitor, monitoring, pressure, pulsating, pulse, rate, research, science, sickness, stress, test, treatment,