Ключевые слова: accuracy, adjusting, air, asthma, breathe, care, chronic bronchitis, close up, disease, equipment, fast heart rate, flow, gas, gauge, health, healthy, hospital, illness, inhaling, instrument, knob, low oxygen, lung cancer, lung disease, manometer, measure, measurement, medical, medical conditions, medicine, meter, needle, no people, nurse, oxygen, oxygen flow meter, patient, physical, pneumonia, pressure, pulmonary, redhead, refill, respirator, scale, sleep apnea, therapy, treatment, valve, wind,