ANTONIA REEVE / SCIENCE PHOTO LIBRARY ANTONIA REEVE / SCIENCE PHOTO LIBRARY
General anaesthetic before dental work. Anaesthetist administering anaesthetic gases to a 14-year-old girl in preparation for dental surgery. General anaesthetics induce unconsciousness and so prevent the patient feeling any pain or discomfort during an operation. The screen at upper left shows the patient's vital signs (cardiovascular and respiratory functions) while they are under anaesthetic. The anaesthetist is responsible for monitoring these during an operation.
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