Dr O'Callaghan is the lead clinician for heart rhythm and pacing services at the University Hospital of Wales, Cardiff, providing tertiary referral services for South East Wales, a referral population of 1.3 million. Prior to his consultant appointment in 2001 he trained at Massachusetts General Hospital, Boston and St George's Hospital, London having entered the speciality of electrophysiology in 1994. Dr O'Callaghan's main interests lie in curing ablatable tachycardias and implantation of devices to prevent blackouts or sudden death (pacemakers and defibrillators) or to treat heart failure (biventricular pacmakers).
At Spire Cardiff Hospital Dr O'Callaghan provides a comprehensive electrophysiology service including the investigation and management of patients with palpitations, blackouts and cardiac arrest survivors or their family members; management of atrial fibrilation, Wolff Parkinson White Syndome, SVTs; ablation of tachycardias and implantation of pacemakers, defibrillators and biventricular pacing systems.
Due to the limited amount of space available for the special clinical interests shown in the section at the top of the page, please find listed below the full list of Dr O'Callaghan's special clinical interests:
Investigation of patients with palpitations, bradycardias, tachycardias, blackouts, syncope, cardiac arrest survivors.
Assessment of individual sudden cardiac death risk and families with inherited arrhymia disorders.
Management of all arrhythmia disorders including WPW syndrome and atrial fibrillation.
Cardioversion of atrial fibrillation.
Ablation and cure of tachycardias (AVNRT, accessory pathways, WPW syndrome, atrial flutter, etc).
Device implantation including pacemakers, Implantable cardioverter defibrillators (ICDs), implantable loop recorders (Reveal devices).
Workup and management of medically refractory heart failure patients including implantation of biventricular pacemakers.