Does Intermittent Accessory Pathway Block during Slow Sinus Rhythm Always Imply a Low Risk for Rapid AV Conduction of Preexcited Atrial Fibrillation?

Cnota, James; Ross, Joseph E.; Knilans, Timothy K.; Epstein, Michael

doi:10.1159/000064678

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Cited by 2 publications

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“…Intermittent preexcitation may be due to acceleration dependent block (Phase 3 block)) when an impulse reaches a conduction fiber during its repolarization phase. It may also occur when an impulse reaches a conduction fiber during a time of slow diastolic depolarization (automaticity), referred to as Phase 4 block [20]. It is therefore important to characterize the circumstances of intermittent ventricular preexcitation in order to gauge the risk of its antegrade conduction and likelihood to predispose the patient to SCD.…”

Section: Risk Assessment/stratificationmentioning

confidence: 99%

Management of asymptomatic ventricular preexcitation

Mohan

Balaji

2019

Indian Pacing and Electrophysiology Journal

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An incidental discovery of Wolff Parkinson White (WPW) pattern on the electrocardiogram (ECG) is not an infrequent finding facing the physician. Most patients discovered incidentally are asymptomatic and it is hard to justify further management of such patients given the time-honored adage to “first do no harm.” However, this finding does have implications. This article is an attempt to guide clinicians about this important issue that is often faced in the office.

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Section: Risk Assessment/stratificationmentioning

confidence: 99%