Ключевые слова: analyzing, birth, cardiogram, cardiology, care, chart, clinic, clinical, color, contraction, doctor, electrocardiogram, electrocardiograph, equipment, examination, frequency, graph, health, health care, heartbeat, hospital, icu, maternity, medical, medicine, paper, photo, pregnancy, print, printer, recorder, result, room, science, showing, technology, test, treatment, urgency, vertical, wall, white,