EP Edge Journal Watch HRS Collaborative Episode June 2026: AVANT GUARD, LAA Closure, OCEAN, and the ALONE-AF Cognitive Substudy
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Release on Jun 01, 2026 6:30 AM Central Daylight Time
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The inaugural EP Edge Journal Watch and Heart Rhythm Society collaboration is here.

In this first episode, Dr. Michael Lloyd from the Heart Rhythm Society Digital Education Committee joins Dr. Niraj Sharma, creator of EP Edge, to launch a new monthly format focused on the most clinically relevant literature in cardiac electrophysiology.

This is not a routine article summary. It is a practical, physician-led discussion of the studies that matter in the EP lab, in clinic, and at the bedside.

Electrophysiology literature is moving quickly. Important trials now appear across major journals, late-breaking sessions, society meetings, and digital platforms. Algorithms can identify highly cited papers. Search tools can rank articles. But clinical relevance still requires judgment. EP Edge Journal Watch was created to help close that gap.

The goal is simple: identify the papers that deserve attention, place them in clinical context, and ask what they mean for real patients.

In this inaugural episode, Dr. Lloyd and Dr. Sharma begin with AVANT GUARD, a major trial evaluating first-line pulsed field ablation in patients with persistent atrial fibrillation. The discussion goes beyond the headline. They examine patient selection, drug-naive persistent AF, procedural safety, the stroke signal, modified enrollment criteria, anticoagulation requirements, endpoint design, and the difference between symptom reduction and true AF burden reduction.

The episode then turns to one of the most active areas in atrial fibrillation care: left atrial appendage closure. Dr. Lloyd and Dr. Sharma discuss CLOSURE AF and CHAMPION AF, two trials that asked similar questions but studied very different patient populations. The discussion focuses on stroke risk, bleeding risk, frailty, procedural complications, endpoint construction, and how these trials should influence shared decision-making. The key clinical question is direct: should left atrial appendage closure be offered broadly as an alternative to anticoagulation, or should it remain focused on patients with a clear problem taking long-term oral anticoagulation?

The final section focuses on anticoagulation after apparently successful AF ablation. Dr. Lloyd and Dr. Sharma discuss OCEAN and ALONE-AF, with attention to stroke risk, bleeding risk, patient selection, rhythm monitoring, and the limits of intermittent surveillance. For selected low-risk patients without recurrent atrial arrhythmia, stopping anticoagulation may be reasonable. But the decision is not automatic. It depends on the patient, the risk profile, the quality of rhythm follow-up, and the shared decision-making conversation.

The episode also highlights the ALONE-AF cognitive substudy, one of the most interesting parts of the discussion. This substudy moves the conversation beyond stroke and bleeding. It asks whether stopping oral anticoagulation after successful AF ablation affects cognitive function. The key point is nuanced. In selected patients without recurrent atrial arrhythmia, stopping anticoagulation did not appear to produce a cognitive penalty. But the more provocative signal may be rhythm itself. Patients who maintained sinus rhythm appeared to have better cognitive trajectories than those with recurrence.

That raises an important clinical question for the field: after AF ablation, is the long-term cognitive story less about the anticoagulant and more about durable rhythm control?

This first episode sets the tone for the EP Edge Journal Watch and HRS collaboration. The format is concise, practical, and clinically grounded. It is built for busy electrophysiologists, cardiologists, fellows, advanced practice providers, and clinicians who care for patients with atrial fibrillation.

The purpose is not just to summarize trials. It is to interpret them.

  • Which patients were studied?
  • Which endpoints matter?
  • Which findings should change a clinic conversation?
  • Which results should make us pause before changing practice?

That is the mission of EP Edge Journal Watch with HRS.

  • Evaluate the evidence from OCEAN and ALONE-AF regarding anticoagulation management after apparently successful atrial fibrillation ablation, including the impact of stroke risk, bleeding risk, patient selection, and rhythm surveillance on decisions about oral anticoagulation discontinuation.
  • Apply principles of individualized, shared decision-making when considering anticoagulation cessation after AF ablation, incorporating patient-specific risk profiles, the quality of rhythm monitoring, and the limitations of intermittent arrhythmia surveillance.
  • Assess emerging data on cognitive outcomes after AF ablation, including findings from the ALONE-AF cognitive substudy, and discuss the potential relationship between durable sinus rhythm maintenance, anticoagulation use, and long-term cognitive function.

Podcast Contributors

Michael S. Lloyd, MD, FHRS 
Niraj Sharma, MD, FHRS
All relevant financial relationships have been mitigated.

Host and Contributor Disclosure(s):

N. Sharma

Nothing to disclose


M. Lloyd

Honoraria/Speaking/Teaching/Consulting: Medtronic
Membership on Advisory Committees: Boston Scientific

Staff Disclosure(s) (note: HRS staff are NOT in control of educational content. Disclosures are provided solely for full transparency to the learner):

S. Sailor: No relevant financial relationships with ineligible companies to disclose.
E. Downward: No relevant financial relationships with ineligible companies to disclose.

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