page_title: Atrioventricular reentrant tachycardia
section_title: Signs and symptoms
hierarchical_section_title: Atrioventricular reentrant tachycardia / Signs and symptoms
caption_attribution_description: English: 12 lead ECG demonstrating WPW. Note the characteristic delta wave and short PR interval.
context_page_description: Atrioventricular reentrant tachycardia, or atrioventricular reciprocating tachycardia, is a type of abnormal fast heart rhythm and is classified as a type of supraventricular tachycardia. AVRT is most commonly associated with Wolff–Parkinson–White syndrome, but is also seen in permanent junctional reentrant tachycardia. In AVRT, an accessory pathway allows electrical signals from the heart's ventricles to enter the atria and cause earlier than normal contraction, which leads to repeated stimulation of the atrioventricular node.
context_section_description: An episode of SVT may present with palpitations, dizziness, shortness of breath, or losing consciousness (fainting). The electrocardiogram (ECG) would appear as a narrow-complex SVT. Between episodes of tachycardia the affected person is likely to be asymptomatic, however, the ECG would demonstrate the classic delta wave in Wolff–Parkinson–White syndrome.
caption: 12 lead electrocardiogram of an individual with Wolff–Parkinson–White syndrome exhibiting 'slurred upstrokes' or 'delta waves' before the QRS complexes
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