AJ PHOTO / SCIENCE PHOTO LIBRARY AJ PHOTO / SCIENCE PHOTO LIBRARY
Emergency treatment. Man receiving emergency oxygen treatment for breathing difficulties. The face mask provides oxygen- enriched air to treat hypoxia (inadequate oxygen in the body tissues), which can be caused by lung and breathing disorders such as asthma, emphysema and chronic bronchitis. The doctor on the right is listening to the man's chest with a stethoscope. This will help to diagnose the cause of the man's breathing difficulties.
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