Dr Dewi Thomas

Dr Dewi Thomas HMT Sancta Maria Hospital Consultant
Dr Thomas is an NHS Consultant Cardiologist at Morriston Hospital Regional Cardiac Centre who also works at HMT Sancta Maria Hospital. His specialist area is Electrophysiology.


Cardiac electrophysiology, heart failure.




Dr Dewi Thomas has expertise in the investigation and management of all heart rhythm disorders including the use of catheter ablation to treat arrhythmia. In particular, he brings state-of-the-art experience to the ablation of complex arrhythmias such as atrial debrillation (AF) and ventricular tachycardia (VT).

Dr Dewi Thomas also has an extensive clinical and research background in the implantation and follow-up of pacemakers, defibrillators and resynchronization therapy (CRT) devices, and in 2012 was awarded a research doctorate (MD) by Cardiff University for his work in this field. More recently he has developed an interest in leadless pacing technology and was part of a team that performed the world’s first clinical implants of an ultrasound based