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AF - increasing role of rhythm control

February 18, 2024 Andrew To

Daitoku-ji Kyoto 2024

There has been increasing evidence of rhythm control in AF. This is what we know in 2024:

Aim for rhythm control of AF in most patients

  • Earlier consideration of AF ablation, especially in those with heart failure (without alternative cause)

  • Rate-related and arrhythmia-related cardiomyopathy under-appreciated

<75y (up to 80y) for AF ablation

In those not suitable for rhythm control

  • If signs of HF or LV impaired, consider cardiac device and AV node ablation


Here is the evidence base:

AF with HF

Castle AF 2018 - Marrouche et al. NEJM. 2018

  • Sx paroxysmal or persistent, LVEF <35%, NYHA II

  • n=363

  • Death = 13.4% vs. 25%

  • Death or HF hospitalisation = 28.5% vs. 44.6%

CASTLE HTx 2023

  • AF wit hens stage HF, mean LVEF 25-29%

  • n=97

  • Primary (death, IVAD, transplant) = 8% vs. 30%

  • Death = 6% vs. 20%

  • LVEF improved by 6.7%

  • AF burden reduced by 31%

AF without HF

Cabana 2019

  • Sx, age>65 or age<65 with >1 stroke risk

  • Primary (death, disabling stroke, serious bleed, cardiac arrest) = non-significant

  • Hospitalisation reduced

  • AF burden reduced

  • Quality of life improved

EAST-AFNET 4 2020 - Kirchhof NEJM 2020

  • Recent AF, age>75, prior TIA/stroke,

  • OR 2 of age>65, female, HF, HT, DM, severe CAD, CKD, LVH

  • n=2789

  • Primary (death, stroke, HF hospitalisation, ACS) = 3.9% vs. 5.0%

  • Serious adverse events with rhythm medications = 4.9% vs. 1.4%

STOP-AF First 2020

  • Sx, paroxysmal

  • n=203

  • Treatment success @1y = 75% vs. 45%

CRYO-FIRST 2021 - Kuniss Europe 2021

  • Sx, paroxysmal

  • n=218

  • Free from AF @1y = 82% vs. 68%

EARLY-AF 2020 - Andrade NEJM 2020, 2023

  • Sx, paroxysmal

  • n=303

  • Free from AF recurrence = 57% vs. 32%

  • Persistent AF @ 3y = 1.9% vs. 7.4%

  • Median AF burden @ 3y = 0.00% vs. 0.24%

  • Serious adverse event @ 3y = 4.5% vs. 10.1%

This is the proposed algorithm

Conceptual algorithm of how we may pick rhythm control vs. rate control



Dr Shawn Foo

In Atrial fibrillation Tags rhythm control, AF
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Copyright @2024 Cardiology Institute; All photos copyright @2024 Andrew To