Ключевые слова: cardiac, cardiogram, cardiology, clinical, closeup, concentration, coronavirus, covid19, device, diagnostic, digital, display, electronic, equipment, exam, finger, hand, health, health care, healthcare, heart, heartbeat, hospital, illustration, instrument, measurement, medical, medical equipment, medicine, meter, modern, monitor, monitoring, object, oximeter, oxygen, oxymeter, pandemic illness, pulse, pulse oximeter, pulse oximeter 3d, saturation, sensor, supply, technology, tool, vital, wireless technology,