Medical articles from Dr John Whitaker

13/10/2025
Dr John Whitaker
Cardiology
PVC and VT ablations: Understanding heart rhythm treatments
Two common rhythm disturbances are premature ventricular contractions (PVCs) and ventricular tachycardia (VT). When medications are not effective or well-tolerated, a procedure called catheter ablatio...
13/02/2025
Dr John Whitaker
Cardiology
Understanding atrial fibrillation
Atrial fibrillation is a type of arrhythmia. In this article, a consultant cardiologist explains what causes atrial fibrillation and how it can be addressed.