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Under general anesthesia, patients are not breathing on their own. Instead, they are
ventilated by a machine. General anesthesia works by
depressing the central nervous system, which includes the brain and spinal cord. When the brain is under the influence of anesthesia, it cannot send the necessary signals to the muscles that control breathing. This is why patients are placed on a ventilator during surgery. The ventilator pushes oxygen into the lungs and removes carbon dioxide, ensuring that the patient's oxygen levels remain stable and their body functions properly.
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