Ключевые слова: anxiety, background, blood, cardiac, cardiology, care, caucasian, elderly man, emergency, equipment, examination, finger, girl, hand, health, health care, heart, heartbeat, help, home, hospital, lifestyle, male, man, mature, measure, medical, medicine, monitor, nursing, nursing homes, oximeter, oxygen, patient, people, person, pill, pneumonia, prevention, results, saturation, senior, service, space, technology, virus, white, white background,