The Rotunda, the beloved docu-series following the ecstatic highs and devastating lows of the world's longest-running maternity hospital, is always an emotional watch but it also features some incredible footage of the work that surgeons can perform on babies in the womb.

Earlier in this series, we watched a camera being put inside the uterus of a woman called Sam who was pregnant with identical twins, the doctors used a laser treatment on the babies while they were still in the womb - watch it back here.

In last night's episode, we met ICU nurse Ellie who is 31 weeks pregnant and her baby has Rhesus disease. The Master of the Rotunda Fergal Malone decided to do a blood transfusion through the umbilical cord to help the baby - watch the video at the top of the page to see the procedure get underway.

The Rotunda continues Thursdays at 9.30pm on RTÉ2. Catch up on RTÉ Player now.