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An uncommon case of spontaneous conversion from AV re-entry tachycardia to AV nodal re-entry tachycardia in a patient with dual tachycardia.

Zeljković I, Benko I, Manola Š, Radeljić V, Pavlović N - Indian Pacing Electrophysiol J (2016)

Bottom Line: During the EP study, supraventricular tachycardia was induced easily and it corresponded to orthodromic AV reentry tachycardia (AVRT) using a concealed left free wall accessory pathway.However, during the study AVRT spontaneously and repeatedly converted to the typical slow-fast AV node reentry tachycardia (AVNRT).Both accessory and AV nodal slow pathways were ablated, due to the finding that both AVRT and AVNRT were independently inducible during the EP study.

View Article: PubMed Central - PubMed

Affiliation: Department of Cardiology and Electrophysiology, Sestre milosrdnice University Hospital Centre, Zagreb, Croatia.

ABSTRACT
We report the case of a 46-year old patient in whom an electrophysiology study (EP) was performed due to paroxysmal supraventricular tachycardia documented in 12-lead ECG. During the EP study, supraventricular tachycardia was induced easily and it corresponded to orthodromic AV reentry tachycardia (AVRT) using a concealed left free wall accessory pathway. However, during the study AVRT spontaneously and repeatedly converted to the typical slow-fast AV node reentry tachycardia (AVNRT). Both accessory and AV nodal slow pathways were ablated, due to the finding that both AVRT and AVNRT were independently inducible during the EP study.

No MeSH data available.


Related in: MedlinePlus

Entrainment during AV re-entry tachycardia.
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fig1: Entrainment during AV re-entry tachycardia.

Mentions: At baseline, sinus cycle length, AH and HV intervals were normal. During atrial programmed stimulation jump was induced at 500/280 ms. Supraventricular tachycardia was induced repeatedly with atrial and ventricular pacing and it corresponded to orthodromic AV re-entrant tachycardia – AVRT (cycle length 330 ms) using a concealed, left free wall accessory pathway (AP). After cessation of ventricular overdrive pacing, the same tachycardia resumed with a measurement that correlated to AVRT (VAV pattern, post-pacing interval (PPI) – tachycardia cycle length (TCL) = 100 ms, His synchronous extra-stimulus advanced the atrial activation) (Fig. 1).


An uncommon case of spontaneous conversion from AV re-entry tachycardia to AV nodal re-entry tachycardia in a patient with dual tachycardia.

Zeljković I, Benko I, Manola Š, Radeljić V, Pavlović N - Indian Pacing Electrophysiol J (2016)

Entrainment during AV re-entry tachycardia.
© Copyright Policy - CC BY-NC-ND
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4834425&req=5

fig1: Entrainment during AV re-entry tachycardia.
Mentions: At baseline, sinus cycle length, AH and HV intervals were normal. During atrial programmed stimulation jump was induced at 500/280 ms. Supraventricular tachycardia was induced repeatedly with atrial and ventricular pacing and it corresponded to orthodromic AV re-entrant tachycardia – AVRT (cycle length 330 ms) using a concealed, left free wall accessory pathway (AP). After cessation of ventricular overdrive pacing, the same tachycardia resumed with a measurement that correlated to AVRT (VAV pattern, post-pacing interval (PPI) – tachycardia cycle length (TCL) = 100 ms, His synchronous extra-stimulus advanced the atrial activation) (Fig. 1).

Bottom Line: During the EP study, supraventricular tachycardia was induced easily and it corresponded to orthodromic AV reentry tachycardia (AVRT) using a concealed left free wall accessory pathway.However, during the study AVRT spontaneously and repeatedly converted to the typical slow-fast AV node reentry tachycardia (AVNRT).Both accessory and AV nodal slow pathways were ablated, due to the finding that both AVRT and AVNRT were independently inducible during the EP study.

View Article: PubMed Central - PubMed

Affiliation: Department of Cardiology and Electrophysiology, Sestre milosrdnice University Hospital Centre, Zagreb, Croatia.

ABSTRACT
We report the case of a 46-year old patient in whom an electrophysiology study (EP) was performed due to paroxysmal supraventricular tachycardia documented in 12-lead ECG. During the EP study, supraventricular tachycardia was induced easily and it corresponded to orthodromic AV reentry tachycardia (AVRT) using a concealed left free wall accessory pathway. However, during the study AVRT spontaneously and repeatedly converted to the typical slow-fast AV node reentry tachycardia (AVNRT). Both accessory and AV nodal slow pathways were ablated, due to the finding that both AVRT and AVNRT were independently inducible during the EP study.

No MeSH data available.


Related in: MedlinePlus