Aspiration happens when vomit is produced during surgery and is then inhaled into the lungs. Normally, you cough when a foreign object enters your airway, but the medications given during anesthesia can prevent coughing. Aspiration can cause lung infections, a blockage in the airway or a severe cough.
Patients are asked to refrain from eating or drinking in the 12 hours prior to surgery to prevent aspiration.
