General anaesthesia (say: an-iss-THEES-ee-a) is a mix of medicines that helps your child fall into a deep sleep. This means your child will not feel pain or remember the operation. General anaesthesia may be used when your child has an operation, test, or treatment.This information will help you and your child prepare for general anaesthesia. Please read this information carefully and explain it to your child, using words he or she can understand. Knowing what to expect will help your child feel less nervous. You can also contact the pre-anaesthesia clinic to help you and your child prepare. Audio available.