Ключевые слова: background, blood, blue, cardiac, cardio, cardiogram, cardiology, care, clinic, closeup, computer, device, doctor, ecg, ekg, electronic, emergency, equipment, health, health care, heart, heartbeat, hospital, icu, instrument, intensive, light, medical, medicine, modern, monitoring, occupation, operating, oxygen, patient, pressure, professional, pulse, room, science, screen, surgeon, surgery, surgical, technology, tool, treatment, urgency, ventilation,