March 8, 2011Journal of Cardiovascular Electrophysiology

Differences in Ventriculoatrial Intervals During Entrainment and Tachycardia: A Simpler Method for Distinguishing Paroxysmal Supraventricular Tachycardia with Long Ventriculoatrial Intervals

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Why the study?

Does the SA-VA difference accurately distinguish atypical AVNRT from AVRT in patients with supraventricular tachycardia with long VA intervals?

Population

314 consecutive patients with inducible sustained supraventricular tachycardias with VA intervals >100 ms…

Comparison

Calculation of the SA-VA difference during… vs Corrected return cycle.

Design

Cohort

Authors

EGEsteban González‐TorrecillaUniversidad Complutense de Madrid JAJesús AlmendralElectrophysiology FFF. FernandezEdinburgh Royal Infirmary

Discussion

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Implication

May aid differentiation of atypical AVNRT from AVRT in long-VA SVT; leaves open prospective validation before routine use.

Structured PICO

Does the SA-VA difference accurately distinguish atypical AVNRT from AVRT in patients with supraventricular tachycardia with long VA intervals?

Population

314 consecutive patients with inducible sustained supraventricular tachycardias with VA intervals >100 ms undergoing an electrophysiologic study, without preexcitation. Atrial tachycardias were excluded.

Intervention

Calculation of the SA-VA difference (interval between the last pacing stimulus and the last entrained atrial electrogram minus the tachycardia ventriculoatrial interval) during tachycardia entrainment via pacing trains from the right ventricular apex.

Comparator

Corrected return cycle (postpacing interval minus tachycardia cycle length minus atrioventricular nodal delay).

Outcome

Diagnostic accuracy (sensitivity, specificity, positive and negative predictive values) in identifying the mechanism of tachycardia (atypical AVNRT vs AVRT).surrogate

The SA-VA difference is a simple and highly accurate electrophysiologic maneuver for differentiating atypical AVNRT from AVRT in patients with long VA intervals.

Cite This Study

González‐Torrecilla et al. (2011) studied this question.

synapsesocial.com/papers/6a6f9138ac440176ef283b52 https://doi.org/10.1111/j.1540-8167.2011.02020.x

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Differences in Ventriculoatrial Intervals During Entrainment and Tachycardia: A Simpler Method for Distinguishing Paroxysmal Supraventricular Tachycardia with Long Ventriculoatrial Intervals

Discussion

Member takes

Implication

Structured PICO

Cite This Study

Differences in Ventriculoatrial Intervals During Entrainment and Tachycardia: A Simpler Method for Distinguishing Paroxysmal Supraventricular Tachycardia with Long Ventriculoatrial Intervals

Discussion

Member takes

Implication

Structured PICO

Cite This Study

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