Ключевые слова: background, blood, cardiac, cardiology, care, clinic, control, corona, covid19, display, electronics, emergency, equipment, exam, finger, hand, health, healthcare, heart, heartbeat, home, hospital, infrared, instrument, machine, measure, measurement, medical, monitor, monitoring, oximeter, oxygen, patient, pressure, pulse, rate, self, self check, sensor, technology, thermometer, tool, virus, woman,