The most common indication for the EXIT procedure is a fetus with an airway compromised by a neck mass (such as cervical teratoma
or lymphangioma), trachea or laryngeal atresia (resulting in CHAOS
), or severe micrognathia. The EXIT procedure allows time to secure the fetal airway by laryngoscopy, bronchoscopy, endotracheal intubation, or tracheostomy. The EXIT-to-Airway turns an airway emergency into a controlled, planned procedure.