Inability to record or pace near the accessory pathway may lead to significant errors in assessing antegrade and retrograde conduction properties in Wolff-Parkinson-White syndrome.
Observational
Does the site of atrial and ventricular pacing and recording affect the assessment of conduction over the accessory pathway in patients with Wolff-Parkinson-White syndrome?
Accurate localization and proximity of pacing and recording to the accessory pathway are critical to avoid significant errors in assessing its conduction properties in WPW syndrome.
The effect of atrial pacing and recording site and ventricular pacing site on assessment of conduction over the accessory pathway (AP) was examined in a group of patients with the Wolff-Parkinson-White syndrome. The importance of initial localization of the AP by recording the sequence of retrograde atrial activation during circus movement tachycardia is demonstrated. Inability to record or pace near the AP may lead to significant errors in the assessment of the antegrade and retograde conduction properties of the AP. During ventricular pacing, retrograde atrial fusion was consistently demonstrated with laterally located APs.
Svenson et al. (Wed,) conducted a observational in Wolff-Parkinson-White syndrome. Atrial and ventricular pacing and recording sites was evaluated on Assessment of antegrade and retrograde conduction properties of the accessory pathway. Inability to record or pace near the accessory pathway may lead to significant errors in assessing antegrade and retrograde conduction properties in Wolff-Parkinson-White syndrome.
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