Atrial tachycardia (AT) is an abnormal heart rhythm, but unlike atrial fibrillation (AF) it is more regular and organised.

AT also comes from the top chambers (atria) of the heart, from either the right side, left side or both. We normally see this in patients who have:

  • undergone heart surgery
  • congenital heart defects
  • undergone previous ablation procedures.

Some people may experience symptoms such as a fast heartbeat, which may feel regular in nature but can also feel irregular. Other symptoms experienced may be like AF, such as breathlessness, dizziness and tiredness. 

Anticoagulant medications

Warfarin is the most widely-used anticoagulant (or blood-thinning medication) to reduce the risk of having a stroke.


A cardioversion is a treatment which delivers electrical energy (shock) to the heart using an external defibrillator to get the heart back into sinus rhythm.

Atrial fibrillation ablation

An ablation procedure is a treatment for a heart condition called atrial fibrillation . This is an irregular heart rhythm, which starts in the upper chambers (atria) of the heart.

Arrhythmia team

The arrhythmia team includes: 

  • EP consultants
  • clinical nurse specialists
  • an arrhythmia pharmacist 
  • catheter laboratory technicians.  


Clinical nurse specialists

  • Natalie Crump 
  • Sue King
  • Sarah Plowright 
  • Alex Wise 

Arrhythmia pharmacist


Harefield Hospital
01895 828979

Royal Brompton Hospital
020 7351 8364 

Useful links

If you want to know more about arrhythmia, here are some helpful organisations and websites: