June 2023: We are aware that the International Journal of Gynecology and Obstetrics have retracted a 2016 paper, which was used in committee decision making for this topic (IPG744). As the evidence base has now changed, it is returning to committee for re-discussion, see NICE's in development page for interventional procedures guidance on balloon disimpaction of the baby’s head at emergency caesarean during the second stage of labour. Once the schedule for this has been confirmed, it will be communicated to stakeholders and published on the NICE website. In the meantime, please refer to NICE's interventional procedures guidance on insertion of a balloon device to disimpact an engaged fetal head before an emergency caesarean section (IPG515) for guidance on this topic.