PACs: Benign Bystanders or AF in Disguise? | JACC Baran
JACC Global28 Heinä

PACs: Benign Bystanders or AF in Disguise? | JACC Baran

Premature atrial complexes (PACs) are among the most common arrhythmias encountered in daily practice and are often dismissed as benign. But are they truly harmless—or could some represent the earliest stage of atrial fibrillation (AF)? Hosts Mitsuaki Sawano, MD, and Hiroyuki Sato, MD welcome Satoshi Higuchi, MD (Tokyo Women's Medical University) to discuss his JACC: Clinical Electrophysiology study, Atrial Effective Refractory Periods in Patients With Frequent Premature Atrial Complexes: Implications for Atrial Fibrillation. Building on translational work from experimental models, the study compares atrial effective refractory periods (AERP) in patients with frequent PACs, paroxysmal AF, and persistent AF to better define the electrophysiologic substrate underlying these conditions. The episode explores how electrical remodeling differs between PACs and AF, why pulmonary vein AERP shortens before more diffuse atrial remodeling develops, and what these findings reveal about the progression from atrial ectopy to sustained arrhythmia. The discussion also examines the emerging concept of PAC-induced atrial cardiomyopathy, the challenge of distinguishing "benign" from potentially malignant PACs, and the future of risk stratification and preventive intervention before AF becomes established.

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Jaksot(93)

ICI Myocarditis: Does Timing Define the Disease? | JACC Baran

ICI Myocarditis: Does Timing Define the Disease? | JACC Baran

Is immune checkpoint inhibitor (ICI)-associated myocarditis the same disease when it occurs early versus months after starting cancer therapy? Host Mitsuaki Sawano, MD, and co-host Shun Kohsaka, MD, w...

3 Marras 34min

ICI Myocarditis: Does Timing Define the Disease? | JACC Baran

ICI Myocarditis: Does Timing Define the Disease? | JACC Baran

Is immune checkpoint inhibitor (ICI)-associated myocarditis the same disease when it occurs early versus months after starting cancer therapy? Host Mitsuaki Sawano, MD, and co-host Shun Kohsaka, MD, w...

3 Marras 34min

Does PFA Reach the Vein of Marshall? | JACC Baran

Does PFA Reach the Vein of Marshall? | JACC Baran

Does pulsed field ablation (PFA) for pulmonary vein isolation affect structures beyond the pulmonary veins? Host Mitsuaki Sawano, MD, welcomes Yosuke Nakatani, MD (Gunma University) to discuss his rec...

27 Loka 36min

A SELUTION to Paclitaxel DCB Complications in PAD? | JACC Baran

A SELUTION to Paclitaxel DCB Complications in PAD? | JACC Baran

Could sirolimus-coated balloons change how we treat femoropopliteal peripheral artery disease? Host Mitsuaki Sawano, MD, welcomes Yoshimitsu Soga, MD, PhD (Kokura Memorial Hospital) to discuss the 3-y...

20 Loka 28min

Proteomics in Action: Finding the Right Drug Targets for Ischemic Heart Disease | JACC Baran

Proteomics in Action: Finding the Right Drug Targets for Ischemic Heart Disease | JACC Baran

Which of the thousands of biomarkers associated with cardiovascular disease could actually become a useful drug target? Host Mitsuaki Sawano, MD, and co-host Nobuhiro Ikemura, MD, welcome Satoshi Yosh...

13 Loka 35min

PET Unmasks CMD: The Hidden Risk Behind Normal Perfusion | JACC Baran

PET Unmasks CMD: The Hidden Risk Behind Normal Perfusion | JACC Baran

Hosts Mitsuaki Sawano, MD, Satoshi Shoji, MD, and Kentaro Ejiri, MD, welcome Yoshito Kadoya, MD, PhD (University of British Columbia / St. Paul’s Hospital) to discuss his JACC: Cardiovascular Imaging ...

6 Loka 36min

Rethinking Health Care at Home and Abroad: Lancet RH Western Pacific Special | JACC Baran

Rethinking Health Care at Home and Abroad: Lancet RH Western Pacific Special | JACC Baran

Host Mitsuaki Sawano, MD, welcomes Shuhei Nomura, PhD (Tohoku University), Lisa Yamasaki, MD (Harvard T.H. Chan School of Public Health), and Haruka Sakamoto, MD, PhD (St. Luke’s International Hospita...

29 Syys 39min

PFA Changes the Game and the AT Circuit | JACC Baran

PFA Changes the Game and the AT Circuit | JACC Baran

Hosts Mitsuaki Sawano, MD, and Hiroyuki Sato, MD, welcome Kazutaka Nakasone, MD (Kobe University) to discuss his JACC: Clinical Electrophysiology study on atrial tachycardia (AT) after pulsed field ab...

22 Syys 36min

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