Electrophysiologist, Director of AF center, Asan Medical Center; University of Ulsan College of Medicine; Husband; Father of two sons;

대한민국 송파구
Joined November 2010
A Technique for Slack Formation During Proximal Left Bundle Branch Pacing With a Lumenless Defibrillation Lead #OpenAccess heartrhythmjournal.com/artic…
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Thanks for your amazing lecture in APHRS 2026. @Koichi16423232
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What would be the result of STAR-AF III trial comparing PVI vs PVI+driver ablation vs PVI+ PW isolation. Looking forward the result of the trial in AHA 2026. pubmed.ncbi.nlm.nih.gov/4291…
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Incomplete Field tagging #Opal #PFA
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“Ballooon sliding technique “ in CRT
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Great start to #APHRS2026 at our Revolt Education Workshop! Thanks to our faculty for leading this session and sharing how they’re using our full PFA suite and integrated solutions to support their arrhythmia workflows. Safety Info: bit.ly/47QZ4q0 #AbbottProud
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Great kickoff with “Unknown EGMs” pre-symposium @APHRSOfficial in Korea. Preserving the art of intracardiac interpretation through Socratic method is not only fun but critical for the advancements in mechanism- most importantly, making the right diagnosis for patients. It is an honor to share the stage with past President @HuiNam_Pak & legend @JonKalmanEP. @MDT_Cardiac Academy
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Replying to @peterkistler3
We're doing this increasingly more frequently but in many patients, instead of creating a complete intercaval line, we just ablate the lower third of the crista (following the pattern of the fractionation and low-voltage distribution), with arrhythmia termination and non-inducibility in many patients, while sparing the sinus node and inter atrial synchrony. We have done this with both Farapulse and Varipulse as well. – at Richmond Hill, Ontario
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NICM ;non dilated with peri-aortic substrate; more epicardially! very frequent ICD shocks! No ATP response; at least 6 morph. VT’s ( fast) Endo approach targeted Epi substrate! 40 wts/HNS / cluster burns! Termination & finally non inducibility! #Epeeps
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What is now possible with large footprint PF catheter. RA lesion set in 44yo recurrent perAF post 2 prior proc: durable PVI/PWI/ANT LA line with normal voltages & neg isuprel
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CPVI Circumferential Poulet Vegetable Isolation
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Should intermediate-risk #AFib patients get a DOAC? 💊 In the late-breaking SINGLE-AF trial presented at #ESC2026, DOACs cut the primary composite endpoint by 69% vs. no DOAC. @melchami99 and @jeongboyeong6 break down the findings. Catch the whole discussion ▶️ bit.ly/4hHHrPk #HRStv #EPeeps #latebreaker @hrsonline @escardio @MehakDhande @jczerpa @Nashwa_Salem_ @naijaQRS @alexandra_regia @kcole_12 @melchami99 @NaimaMaqsood9 @HeartRhythmNP @AZ_EP_DOC @OliverMonfredi @np_varghese @atulverma_md
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“Biatrial catheter ablation for persistent atrial fibrillation “ just published kwnsfk27.r.eu-west-1.awstrac…
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Type I, infrahisian second degree AV block. One of the largest HV I have ever recorded Case done with the portable EP recording system KardioSkater.
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Surface ECG, Intracardiac tracings by Orion catheter in the left superior pulmonary vein (Red to Purple) and Coronary sinus(Green), recorded during pacing from RAA. Is there anything abnormal besides dissociated PVP? #Epeeps
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Marshall bundle potential
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Dissociated Marshall bundle potential as well as dissociated LSPV potentials
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2026- Journal Of Arrhythmia "Clinical Advantages and Pitfalls of Pulsed Field Ablation: How to Prevent ALH Syndrome" onlinelibrary.wiley.com/doi/… #pfa
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👀Here’s an example of why you NEVER want to use a hydrophilic wire through a needle. ⚠️High risk of sheering off the hydrophilic coating in the vessel/tissue 🔗fixed core/nitinol based wire should mainly be used for access. In micropuncture I prefer the 0.018 Nitex #Cardiology #Irad #cardioX #peripheral
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