open access

Vol 68, No 2 (2010)
Invasive electrophysiology
Published online: 2010-04-22
Submitted: 2012-12-28
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Contribution of atrioventricular node inputs on orthodromic atrioventricular reentrant tachycardia cycle length

Krzysztof Błaszyk, Michał Waśniewski, Stefan Grajek
Kardiol Pol 2010;68(2):232-236.

open access

Vol 68, No 2 (2010)
Invasive electrophysiology
Published online: 2010-04-22
Submitted: 2012-12-28

Abstract

We describe a 21-year-old woman with a previous history of orthodromic AVRT and overt preexcitation. Electrophysiological study revealed the presence of a left-sided accessory pathway. During an orthodromic AVRT a spontaneous sudden change in heart rate (141 to 202 beats/min) without any change of the QRS morphology was noted due to a decrease in AH interval (from AH = 227 ms to AH = 100 ms). We explained this phenomenon as the sudden change of the inferior inputs to superior in the AV node.

Abstract

We describe a 21-year-old woman with a previous history of orthodromic AVRT and overt preexcitation. Electrophysiological study revealed the presence of a left-sided accessory pathway. During an orthodromic AVRT a spontaneous sudden change in heart rate (141 to 202 beats/min) without any change of the QRS morphology was noted due to a decrease in AH interval (from AH = 227 ms to AH = 100 ms). We explained this phenomenon as the sudden change of the inferior inputs to superior in the AV node.
Get Citation

Keywords

orthodromic AVRT; preexcitation syndrome; inputs of the AV node

About this article
Title

Contribution of atrioventricular node inputs on orthodromic atrioventricular reentrant tachycardia cycle length

Journal

Kardiologia Polska (Polish Heart Journal)

Issue

Vol 68, No 2 (2010)

Pages

232-236

Published online

2010-04-22

Bibliographic record

Kardiol Pol 2010;68(2):232-236.

Keywords

orthodromic AVRT
preexcitation syndrome
inputs of the AV node

Authors

Krzysztof Błaszyk
Michał Waśniewski
Stefan Grajek

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