Cardiology (heart)
Spoken Languages


  • European Association of Cardiothoracic Surgery
  • World Society for Paediatric and Congenital Heart Surgery


Mr Imre Kassai trained in Budapest, Hungary, qualifying in 1988. He went on to specialise in cardiac surgery at worked in a number of hospitals in Hungary. He spent time in America as a Clinical Assistant Professor in Adult Cardiac Surgery at the University of Pittsburgh, School of Medicine.

He also worked in the Netherlands as a fellow in cardiothoracic surgery before moving to the UK in 2014. He joined the Trust as clinical fellow and a specialty doctor in congenital heart surgery, and in 2018 became a locum consultant cardiac surgeon.

Areas of expertise

Mr Kassai is a consultant cardiac surgeon based at Royal Brompton Hospital. He is one of only a few who specialise in neonatal congenital heart surgery, and is frequently on-call because of his expertise.

His other areas of expertise include:

  • Procedures for hypoplastic arch, Truncus arteriosus and tricuspid atresia
  • Treatment for septal defects
  • Mechanical circulatory support for children, including ECMO and left ventricular assist devices (LVADs)
  • Cardiac valve repair and replacement
  • Myocardial revascularisation
  • Implanting permanent pacemakers into paediatric patients.

Teaching and memberships

Mr Kassai has spoken at a number of conferences around the world, including London, Milan and Barcelona, speaking on topics such as ‘An integrated approach to left ventricular resynchronisation’ and ‘Previous unsuccessful attempts of LV lead implantation: which approach for resynchronisation?’

He is a member of the European Association for Cardio-Thoracic Surgery and is also a founding member of the World Society for Paediatric and Congenital Heart Surgery.