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Medical articles from Dr John Whitaker

pvc-and-vt-ablations-understanding-heart-rhythm-treatments article image
John Whitaker
13/10/2025
Dr John Whitaker

Cardiologist

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 ablation can offer a lasting solution.

understanding-atrial-fibrillation article image
John Whitaker
13/02/2025
Dr John Whitaker

Cardiologist

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.

John Whitaker profile image

Dr John Whitaker

Cardiologist

5.01review

Expert in:
Arrhythmia
Ventricular tachycardia
Atrial Fibrillation
Atrial fibrillation ablation
Cleveland Clinic London HospitalCentral London, 33 Grosvenor Place, SW1X 7HY,
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