Ключевые слова: abstract, assessment, background, beat, cardiac, cardiogram, cardiograph, cardiology, care, checkup, clinic, concepts, desk, diagnose, diagnosis, diagnostic, doctor, document, ecg, ekg, electrocardiogram, electronic, examination, graph, health, heart, heartbeat, hospital, intern, life, medical, medicine, monitor, normal, patient, program, pulse, rate, results, stethoscope, stress, study, tablet computer, technical, technology, test, treatment,