AJ PHOTO / SCIENCE PHOTO LIBRARY AJ PHOTO / SCIENCE PHOTO LIBRARY
Anaesthetist in surgery. At right is the anaesthetist's trolley from which anaesthetic liquids and gases are administered. The dials and gauges ensure the correct amount and mixture of drugs are delivered. Screens show the patient's vital signs (cardiovascular and respiratory functions), which the anaesthetist is responsible for monitoring during the operation. Anaesthetics induce unconsciousness and so prevent the patient feeling any pain or discomfort during an operation.
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