Perinatal optimisation and predictive testing of in utero transfers and their outcome: A regional study

Aim: To review in utero transfers (IUT), their antenatal optimisation strategies including predictive testing and outcomes in a large region in the UK.

Methods: All IUT requests received by regional transport service in the UK, over a 12-month period, were reviewed gathering information on gestation at referral, antenatal corticosteroid use, tocolysis, magnesium sulphate, predictive test use (and result if applicable) and delivery outcome at 48 h. The reason for transfer was also collated to determine capacity issues.

Results: Only 22.9% of women transferred delivered within 48 h of transfer, with only 76% of eligible women receiving antenatal steroids. The overall use of predictive testing was low, in 23.5% of all referrals. Approximately 19.8% of women presenting at 30 weeks gestation or more received predictive testing while only 26.5% of women at risk of extreme preterm delivery had a predictive test, and 40.7% of all IUT requests were for capacity reasons.

Conclusion: More predictive testing with accurate approaches to predicting imminent preterm labour and delivery needs to be incorporated into clinical care to reduce the number of inappropriate IUTs. Appropriate antenatal optimisation to improve outcomes should be offered to women undergoing an IUT. Capacity remains problematic leading to a significant number of transfers.