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Better contact force (CF) and catheter stability (CS) during atrial fibrillation (AF) ablation are associated with higher success rate. Changes in CF and CS are observed during respiratory movements and cardiac contraction. Previous studies suggest that rapid atrial pacing (RAP) and high frequency low tidal volume ventilation (HFLTV) independently or in combination improve CS and CF and quality of lesions. Data of body weight adjusted HFLTV ventilation strategy associated with RAP in AF high-power short-duration (HPSD) ablation still lacking.