Wolff-Parkinson-White syndrome EKG

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Sara Zand, M.D.[2] Cafer Zorkun, M.D., Ph.D. [3]

Overview

Wolff-Parkinson-White (WPW) pattern is characterized by ECG findings such as a short PR interval and a delta wave and wide QRS complex.WPW syndrome is the occurrence of tachycardia with or without associated symptoms in a subject with existing WPW pattern. WPW syndrome can present as an orthodromic or antidromic AVRT during which the delta wave no longer appears. Atrial fibrillation in a patient with WPW should be suspected when there is ECG findings of an irregularly irregular rhythm and absent P waves suggestive of atrial fibrillation in the context of a heart rate higher than 240 beats per minute.

WPW Pattern

Determining the location of the accessory pathway

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
V1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
_
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
+
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Positive inferior leads
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Positive inferior leads
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
0
 
1,2
 
3
 
 
 
 
 
 
 
3
 
1,2
 
0
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
V3
 
V3
 
V3
 
 
 
 
 
 
Left lateral
 
 
Left posterolateral
 
V1/1 ratio
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
_
 
+
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Right posterior
 
Right paraseptal
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
<1
 
≥1
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
_
 
 
+
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Lead 2, Notched QS
 
 
Left posterolateral
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Right lateral
 
Nodo-Hisian
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Yes
 
NO
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
_
 
 
+
 
 
 
 
 
 
 
 
 
Deep coronary sinus
 
Left paraseptal
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Nodo-Hisian
 
 
Right atrium
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
The above algorithm adopted from 2019 ESC Guideline[4]

WPW Syndrome

the most common type of tachyarrhythmia is AVRT.[6]

Orthodromic AVRT

The EKG findings include the following:

Antidromic AVRT

Atrial Fibrillation in WPW


Shown below is an ECG depicting an irregularly irregular rhythm with wide QRS and absent P waves suggestive of atrial fibrillation in WPW syndrome.

Examples

Shown below is an EKG of Wolff-Parkinson-White syndrome demonstrating slurred upstroke of the QRS complex (>110 milli sec), resulting in a delta-wave (arrow). The EKG also shows a short PR interval.

Copyleft image obtained courtesy of ECGpedia,http://en.ecgpedia.org/wiki/Main_Page


Shown below is an EKG showing a slurred upstroke QRS complex which is best appreciated in the precordial leads and a PR interval of less than 120 ms (short PR interval) suggesting WPW syndrome.

Copyleft image obtained courtesy of ECGpedia,http://en.ecgpedia.org/wiki/Main_Page


Shown below is an EKG demonstrating a delta wave in leads V2, I, aVL, with wide QRS complexes and left axis deviation suggesting WPW syndrome.

Copyleft image obtained courtesy of ECGpedia,http://en.ecgpedia.org/wiki/Main_Page


Shown below is an EKG showing a short PR interval of less than 120 ms, delta waves in leads I, aVF, aVL and chest leads with wide QRS complexes indicating WPW syndrome.

Copyleft image obtained courtesy of ECGpedia,http://en.ecgpedia.org/wiki/Main_Page


For more EKG examples of Wolff-Parkinson-White syndrome click Wolff-Parkinson-White syndrome EKG examples here.

References

  1. Smolders L, Majidi M, Krucoff MW, Crijns HJ, Wellens HJ, Gorgels AP (2008). "Preexcitation and myocardial infarction: conditions with confusing electrocardiographic manifestations". J Electrocardiol. 41 (6): 679–82. doi:10.1016/j.jelectrocard.2008.05.005. PMID 18602643.
  2. Liu R, Chang Q (2013). "The diagnosis of myocardial infarction in the Wolff-Parkinson-White syndrome". Int J Cardiol. 167 (3): 1083–4. doi:10.1016/j.ijcard.2012.10.055. PMID 23157811.
  3. 3.0 3.1 3.2 Preminger MW, Callans DJ, Gottlieb CD, Marchlinski FE (1994). "Radiofrequency catheter ablation used to unmask infarction Q waves in Wolff-Parkinson-White syndrome". Am Heart J. 128 (5): 1040–2. PMID 7942468.
  4. Brugada J, Katritsis DG, Arbelo E, Arribas F, Bax JJ, Blomström-Lundqvist C, Calkins H, Corrado D, Deftereos SG, Diller GP, Gomez-Doblas JJ, Gorenek B, Grace A, Ho SY, Kaski JC, Kuck KH, Lambiase PD, Sacher F, Sarquella-Brugada G, Suwalski P, Zaza A (February 2020). "2019 ESC Guidelines for the management of patients with supraventricular tachycardiaThe Task Force for the management of patients with supraventricular tachycardia of the European Society of Cardiology (ESC)". Eur Heart J. 41 (5): 655–720. doi:10.1093/eurheartj/ehz467. PMID 31504425.
  5. "Wolff-Parkinson-White Syndrome and Accessory Pathways". Retrieved 1 April 2014.
  6. "ACC/AHA/ESC Guidelines for the Management of Patients With Supraventricular Arrhythmias—Executive Summary". Retrieved 15 August 2013.
  7. Klein, George J.; Bashore, Thomas M.; Sellers, T. D.; Pritchett, Edward L. C.; Smith, William M.; Gallagher, John J. (1979). "Ventricular Fibrillation in the Wolff-Parkinson-White Syndrome". New England Journal of Medicine. 301 (20): 1080–1085. doi:10.1056/NEJM197911153012003. ISSN 0028-4793.

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