Mr Guido Michielon is a consultant paediatric cardiac surgeon at Royal Brompton Hospital, where he treats private and NHS patients.

He studied at Padua University, Italy, graduating with the highest honour (summa cum laude). He completed his clinical training in cardiac surgery in the USA, where he spent five years gaining experience in some of the country’s most renowned cardiac departments. This included Boston Children’s Hospital and the Children’s Hospital of Philadelphia. He has complete surgical training in adult, congenital, paediatric and neonatal cardiac surgery.

In 2001, he took on the position of attending paediatric cardiac surgeon at Bambino Gesù Children’s Hospital in Rome, Italy, where he specialised in aortic root and paediatric valve repair.

In 2012, he was appointed as a paediatric cardiothoracic surgeon at University Medical Centre Groningen in the Netherlands.

Mr Michielon joined Royal Brompton and Harefield hospitals in 2015, where he is a consultant in paediatric cardiac surgery with special interest in neonatal surgery.

Clinical expertise

Mr Michielon is an experienced cardiac surgeon and has performed over 2,200 open heart procedures in adult, congenital and paediatric cardiac surgery. He can perform the whole spectrum of congenital cardiac procedures with a special focus on neonatal surgery, including:

Mr Michielon has expertise in the three-stage Norwood procedure heart surgery for hypoplastic left heart syndrome. This includes:

  • comprehensive Norwood stage one and two
  • complex neonatal aortic arch reconstruction
  • arterial switch operation for transposition of the great arteries with complex coronary artery patterns
  • neonatal repair of pulmonary atresia ventricular septal defect (VSD).

Mr Michielon also has a special expertise in aortic root surgery and complex mitral valve repair in paediatric patients.

He has valuable experience in heart transplantation for congenital heart disease (CHD). Also he is experienced at implanting the 'Berlin Heart' pneumatic pulsatile paediatric assist devices, which can be a bridge to heart transplantation.

In 2010, he was part of the surgical team that implanted the first axial flow pump – the Jarvick 2000 – in a paediatric patient with heart failure.

Research interests

Mr Michielon’s interests in transplantation focus on failed Fontan procedures. He has coordinated and published a multi-institutional European study on behalf of the European Congenital Heart Surgeons Association (ECHSA) on this subject.


Mr Michielon has published over 50 papers as first author in some of the most valuable journals, including:

  • Circulation
  • Journal of the American College of Cardiology
  • Journal of Thoracic and Cardiovascular Surgery 
  • Annals of Thoracic Surgery
  • European Journal of Cardio-Thoracic surgery.