Ключевые слова: analysis, beat, blood, cardiac, cardio, cardiogram, cardiograph, cardiology, care, chart, curve, diagnosis, disease, doctor, ecg, ekg, electrocardiogram, emergency, energy, equipment, frequency, graph, graphic, health, healthcare, healthy, heart, heartbeat, hospital, human, illustration, life, line, medical, medicine, monitor, monitoring, patient, pressure, pulse, rate, rhythm, sign, signal, stress, symbol, test, wave,