Wolff-Parkinson-White Syndrome

Question 1

Define Wolff-Parkinson-White Syndrome

Answer 1

SVT (AVRT) where an accessory pathway (Bundle of Kent) allows conduction to reach the ventricle earlier -> pre-excitation

Question 2

Aetiology of Wolff-Parkinson-White Syndrome

Answer 2

Accessory pathway (Bundle of Kent) connecting atrium to ipsilateral ventricle across the mitral and tricuspid annulus 
Majority of pathways are bi-directional

Question 3

Risk factors for Wolff-Parkinson-White Syndrome

Answer 3

Ebstein’s anomaly 
Congenital abnormalities e.g. HOCM< mitral valve prolapse, ASD/VSD
Cardiac rhabdomyoma
Marfan’s syndrome 
Friedreich’s ataxia 
Family history

Question 4

Symptoms of Wolff-Parkinson-White Syndrome

Answer 4

In childhood - asymptomatic

Palpitations
Syncope, pre-syncope
SOB 
Chest pain 
Polyuria 
Polyuria - paroxysmal SVT
Sudden death

Question 5

Investigations for Wolff-Parkinson-White Syndrome

Answer 5

ECG: 
Short PR interval 
Broad QRS
Delta wave 
Biphasic T wave 
AVRT (20%), AF (16%), Atrial flutter (16%)