Purpose: Identify some factors predicting arrhythmia after permanent pacemaker placement to treat atrioventricular block and sinus node dysfunction. Methods: Prospective study in 312 patients with permanent pacemakers due to atrioventricular block and sinus node dysfunction being monitored at Thong Nhat Hospital and Thu Duc city hospital from March 2022 to September 2022 Results: The rate of arrhythmia after pacemaker insertion was 41%, of which 20.2% atrial fibrillation; 10.9% atrial tachycardia; 1.3% sinus arrest; 9.9% ventricular premature beats; 1.3% ventricular tachycardia and 2.2% supraventricular tachycardia. Factors that determine the possibility of arrhythmia after permanent pacemaker placement include ejection fraction index, blood potassium, blood chloride, blood HDL-Cholesterol concentration, smoking and pacemaker mode (VVIR). /DDDR). Conclusions: Cardiac arrhythmia in patients with permanent pacemakers is always likely to occur, related factors predict 57.8% of the possibility of this event occurring.

The authors have declared no competing interest.

There is no funding to report.

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This study was approved by the Institutional Review Board of Thu Duc City hospital

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