View source for Lown-Ganong-Levine syndrome

==Background==
*Poorly understood pre-excitation condition
*[[Atrioventricular re-entrant tachycardia]] (AVRT) due to James fibers 
**Bundle of James accessory pathway creates atrio-hisian bypass tract
***Convincing existence of the James accessory pathway has not been conclusively demonstrated

==Clinical Features==
*[[Palpitations]]
*[[Paroxysmal supraventricular tachycardia]]
*Short PR interval on ECG

==Differential Diagnosis==
{{Tachycardia (narrow) DDX}}
{{Palpitations DDX}}

==Evaluation==
*[[ECG]]
**Short PR interval
**Normal QRS
**No delta wave
**May have ventricular premature complexes
*May appear similar to:
**[[WPW]]
**AV junctional rhythm

==Management==
*Vagal manoeuvres may terminate episodes of SVT
*Counsel to avoid alcohol, coffee, and other stimulants
*Patients with demonstrated accessory pathways on electrophysiological study may benefit from ablation

==Disposition==
*Home with cardiology follow up
*Consider referral for Holter monitor, echo to rule out structural disease, and electrophysiologic studies

==See Also==

==References==
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[[Category:Cardiology]]