- Prerequisites are not met.
Absolute contraindications specific to vacuum deliveries
- Face presentation
- Gestations <34/40 due to increased risk of cephalhaematoma, intracranial haemorrhage and neonatal jaundice. (There is insufficient evidence to establish safety of the vacuum at gestations between 34+0 and 36+0 weeks; RCOG.)
- Fetal bleeding disorders (e.g. alloimmune thrombocytopenia).
- Fetal predisposition to fractures (e.g. osteogenesis imperfecta). There may be considerable risk if the head has to be delivered from low in the pelvis at a difficult second stage caesarean section.
- Avoid difficult deliveries (e.g. Trial) in cases of maternal infection (e.g. Hepatitis B/C, HIV) as there may be an increased risk of fetal abrasion/scalp trauma.