(July 2018) The criteria for inducing the onset of labour in pregnancy seems to be widening, with the term ‘high risk’ having an increasingly broad net. However one term which has remained steadfastly clinically contraindicated and yet still widely practised, is ‘induction for large for dates (LFD)’. NICE guidance is clear on the issue (NICE CG70 July 2008) : 1.2.10 Suspected fetal macrosomia 1.2.10.1 In the absence of any other indications, induction of labour should not be carried out simply because a healthcare professional suspects a baby is large for gestational age (macrosomic). So first of all, what is large for dates? Clinically speaking it is a baby born with a birth weight of equal to or more than 4kg. This occurs in 2-10% of births in the UK, however, and this is a significant ‘however’, as the diagnosis of macrosomic babies is notoriously variable in sonographic accuracy with a range of 15% to 79%. Furthermore a systematic review of RCTs concluded that there...