Ключевые слова: amplitude, analyse, analysis, analyze, background, beat, being, blood, blue, breach, cardiac, cardio, cardiogram, cardiograph, cardiologist, cardiology, care, chart, clinic, close, curve, death, detail, diagnose, diagnosis, diagram, disease, ecg, ekg, electrocardiogram, electrocardiograph, emergency, equipment, frequency, graph, graphic, health, healthcare, healthy, heart, heartbeat, hospital, illness, life, line, medical, medicine, nobody, outpatient, paper, patient, printout, pulsating, pulse, research, rhythm, science, test, trace,