Ключевые слова: aid, background, beat, blood, cardiologist, cardiology, care, check, color, concept, diagnosis, different, disease, doctor, emergency, equipment, examination, first, flat, health, heart, heartbeat, illness, items, kit, lay, listening, measuring, medic, medical, medicine, nobody, object, pressure, prevention, pulse, rhythm, service, set, sickness, sphygmomanometer, stethoscope, tool, top, treatment, view, white,