Chase Lewellen

Incoming EP Fellow @WeillCornell Medicine 🇨🇦🇺🇸

[Chase Lewellen @ChaseLewellen]

@WFAN @tommylugauer are you on air tonight? The Audacy app and website is showing After Hours but airing the black out MLB message instead. Other stations work fine.

[Chase Lewellen @ChaseLewellen]

@chaingangof1974 Same. Gorillaz on the other hand…

[Chase Lewellen @ChaseLewellen]

All these years, there was nothing better than tuning into John & Suzyn on a lazy afternoon. Thanks for all the memories John. We’ll miss you!

[Brandon Tierney @BrandonTierney]

This is absolutely incredible. 💔

[William H. Sauer, MD @True_EP]

Adjunctive Purkinje Denetworking at the time of ablation led to improved VT/VF-free survival in VT patients with a history of shocks for PMVT/VF. Pardigm shifting approach.

Free read through this author share link:
https://t.co/lCN5O1JRPK

[HeartRhythm @hrs_journal]

Machine Learning-enabled Assessment of Risk for Drug-induced QT Prolongation at the Time of Prescribing #OpenAccess

https://t.co/GcbtVSsYAX

[American Heart Association @American_Heart]

The American Heart Association mourns the passing of the legendary cardiologist Eugene Braunwald, M.D., widely recognized as one of the most influential figures in the history of cardiovascular medicine. Over seven decades, his work reshaped the understanding and treatment of heart disease, leading many to call him the father of modern cardiology.

Braunwald was a lifelong contributor to the American Heart Association, helping advance its research and scientific mission, and was honored with some of the Association’s highest honors for his lasting influence on cardiovascular care and research. His influence extended well beyond his own discoveries, as generations of Association‑supported investigators, clinicians and academic leaders were trained by Braunwald or guided by the clinical trial standards and mentorship models he helped establish.

https://t.co/ieZuHYMyOP

[HeartRhythm @hrs_journal]

Anatomic Localization of Trigger Sites Initiating Stretch-Induced Hypotension in Humans

https://t.co/8d9RPwLZOQ

[HeartRhythm @hrs_journal]

Safety and efficacy of conduction system pacing in dual-chamber Pacemakers in a CRT-indicated population: Primary analysis of the CORE-CPP study #OpenAccess

https://t.co/jhnwf4ioM5

[Chase Lewellen @ChaseLewellen]

@DONBROCO Somersaults, Ghost In the Night, The Corner

[HeartRhythm @hrs_journal]

Extensive Coronary Venous System Mapping for Outflow Tract Ventricular Arrhythmias: Utility of a Dual Over-the-Wire Microelectrode Catheter Technique

@shirai_yasuhiro

https://t.co/f28SNVpzeC

[Chase Lewellen @ChaseLewellen]

@BlocParty @muse Look forward to seeing you all in NYC!

[Chase Lewellen @ChaseLewellen]

Almost time #RepBx

[Chase Lewellen @ChaseLewellen]

@chaingangof1974 Your love of Oasis shines through bright on the new single! I heard the Britpop immediately! Had the chance to see them for the fist time at Wembley last year. Nothing compares

[Chase Lewellen @ChaseLewellen]

@chaingangof1974 Amazing tune! Can’t wait for more

[Chase Lewellen @ChaseLewellen]

I always think about this in the cath lab when the patient is laying flat with a wedge of 28 and CVP of 8

[Andrew J Sauer MD @AndrewJSauer]

I just read the new JAMA Rational Clinical Examination on bedside assessment of “volume overload,” and it reinforces what many of us experience at the bedside.

Traditional exam findings are specific but not very sensitive.

For example, JVP elevation had high specificity but low sensitivity, and edema and crackles were only modestly helpful, which means we will miss a lot of congestion if we rely on the exam alone.

Chest radiography showed vascular congestion, and natriuretic peptide testing performed better overall, and point-of-care ultrasound added meaningful diagnostic value, particularly lung B lines, IVC dynamics, and ultrasound-guided JVP.

Where this gets even harder is cardiometabolic HFpEF and obesity.

In obesity, natriuretic peptides are often suppressed, and Doppler surrogates of filling pressures can look less impressive despite substantial congestion and external constraint physiology.

In other words, the very patients most likely to be “wet” can have more muted signals from the tools we lean on most.

The takeaway for me is not that bedside evaluation is futile.

It is that we need a layered approach and tighter feedback loops.

Combine clinical trajectory with improved point-of-care tools and biomarkers and interpret everything through the lens of phenotype.

Obese HFpEF needs its own diagnostic humility, because congestion is real even when the usual markers whisper.

Drum B, La Course B, Kelly M, et al. Does This Patient Have Volume Overload? The Rational Clinical Examination. JAMA. Published online February 23, 2026. doi:10.1001/jama.2026.0446

[Chase Lewellen @ChaseLewellen]

@TheRockRevival_ @InhalerDublin

[CircEP @CirculationEP]

During pulsed field ablation, a novel ablation index combined with contact force and number of burst pulses provides high prediction accuracy of irreversible lesion depth #Epeeps https://t.co/0FURC177BP

[Sandeep Gautam @gautamsand]

December 2025 Issue Announcement @hrs_journal
📣 Heart Rhythm — December 2025 issue is out!
This month brings a diverse set of EP studies spanning AF ablation, VT PFA, LBBAP conduction heterogeneity, novel AP mapping maneuvers, ICE-guided mitral lines, remote monitoring consensus, CRT win-ratio analysis, and more.
🖼️A beautifully minimalist cover photo, A Dried Fruit of the Physalis, celebrates structure, fragility, and form — much like the conduction system itself.
🧑‍🎓Let’s walk through 10 key studies for #EPeeps ↓
https://t.co/DQF9SxlBJ8

[Roderick Tung @DrRoderickTung]

Periaortic VT has become the most common type that we see. Perhaps it is referral bias, confirmation bias, or a new biological evolution of arrhythmia substrates. MRI often fails to identify the substrate. ICE has been a game changer over the past decade. #ablateVT

[Roderick Tung @DrRoderickTung]

Congrats @Dr_Nazarian_EP and colleagues!
More evidence that hyperboloids do exist #VTin3D.

Geometric Features of Ventricular Tachycardia Corridors in Patients With Ischemic Cardiomyopathy | Circulation https://t.co/jT9E75DkWV