TV3 has been granted unprecedented access to the theatres and wards of one of Ireland's most well known children's hospitals; and follows the high and lows of the hospital's daily routine. Click here for help and advise lines.
Watch Thursday at 8.30pm, Catch-up on 3player.
Seven-week-old Aoife Mannix is suffering from pertussis, also known as whooping cough, which doctors fear could have caused damage to her brain
Three long-term patients are featured in this edition, including 14-year-old Cealan Goan who prepares for his 54th operation.
Jack Waters, aged 10, was born with kidney failure but his mother is prepared to donate one of her kidneys to give her son a new lease of life.