STRIDER is looking at the effect of the medication sildenafil (better known as Viagra) on babies identified as having severe growth restriction (between 22 and 29 weeks of pregnancy). Sildenafil relaxes blood vessels so they let more blood flow through. The study will see whether sildenafil improves the blood flow to the baby so that he or she can stay inside mum for longer (which is beneficial if the baby is not in danger). The study is being led by Professor Zarko Alfirevic at the University of Liverpool. We supported the study group’s application for funding and are now on the trial steering committee.

The study is planned to run until 2016.