1 Department of Paediatric Cardiology and Anaesthesiology, Queen Elizabeth Hospital 2, Kota Kinabalu, Sabah, Malaysia* Corresponding author’s email: drlilyng@yahoo.co.uk
2 Department of Paediatric Cardiology and Anaesthesiology, Queen Elizabeth Hospital 2, Kota Kinabalu, Sabah, Malaysia
Critical aortic stenosis (AS) is very severe narrowing at aortic valve in newborns, causing left ventricular outflow tract obstruction (LVOTO). It is lethal if not treated soon after birth.