The goal of this observational study is to evaluate the impact of different atrial pacing sites-Bachmann's bundle pacing versus right atrial appendage pacing-on the development and progression of atrial cardiomyopathy in patients diagnosed with sick sinus syndrome who are undergoing permanent pacemaker implantation.
Patients aged 19 years or older
Patients diagnosed with sick sinus syndrome who are scheduled for de novo implantation of a permanent pacemaker or permanent implantable cardioverter-defibrillator
Patients or their legal representatives who voluntarily consent to the access of medical records and study data throughout the entire research period
Patients with persistent or permanent AF
Patients with a life expectancy of less than one year due to other comorbidities
Pregnant or breastfeeding women
Patients who refuse active treatment