This research studies whether a device used during surgery can help doctors better protect the nerve that moves a child's vocal cords. Damage to this nerve can affect speaking, swallowing, and sometimes breathing. Children having certain throat, chest, or heart surgeries may be asked to take part. During surgery, some children will have standard care and others will have standard care plus the nerve-monitoring device. After surgery, the team will check vocal cord movement and ask about voice and swallowing. The purpose is to see whether the device can lower the chance of nerve injury and improve care for children in the future.