Special Problems in Ablation of Accessory Pathways

Petrellis, Basilios; Skanes, Allan C.; Klein, George J.; Krahn, Andrew D.; Yee, Raymond

doi:10.1016/b978-1-4377-1368-8.00025-8

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2019

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(2 citation statements)

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“…2 The incidence of multiple APs is 3%-13% and may pose a the AP when comparing antidromic and orthodromic reciprocating tachycardia; and (e) change from orthodromic to antidromic reciprocating tachycardia or vice versa. 4 The reported success rate for the ablation of multiple AP is 86%-98%. 4 Failure to recognize the presence of more than one pathway is cited as a reason for the acute failure of ablation.…”

Section: Discussionmentioning

confidence: 99%

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Differential effective refractory period as a useful marker of multiple accessory pathways

Helm

Varkey²,

Karnik

2019

Journal of Arrhythmia

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Accessory pathway (AP) ablation failure may be related to multiple pathways which go unrecognized at the time of electrophysiology study. We present a patient who had two adjacent APs based on different preexcitation patterns as well as effective refractory periods (ERPs) which have not been previously described. Apart from leading to recurrent supraventricular tachycardia (SVT), multiple pathways are important to recognize as they more frequently predispose to malignant atrial arrhythmias.

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Section: Discussionmentioning

confidence: 99%

“…4 The reported success rate for the ablation of multiple AP is 86%-98%. 4 Failure to recognize the presence of more than one pathway is cited as a reason for the acute failure of ablation. In a case series of 89 patients who had previously undergone failed Wolff-Parkinson-White (WPW) ablation, multiple or large APs were seen in 13 patients.…”

Section: Discussionmentioning

confidence: 99%