ASYMPTOMATIC ATRIAL FIBRILLATION IN PATIENTS WITH IMPLANTED PACEMAKER
Introduction: Atrial fibrillation (AF) is the most common persistent cardiac arrhythmia. Patients with AF often suffer from chest pain, palpitations and dyspnea. Some patients have no symptoms. The frequency of asymptomatic AF is not exactly known. There is no difference in the stroke risk between symptomatic and asymptomatic AF patients. Currently implanted pacemakers offer a diagnostic function, which registers AF attacks in a device memory.
Aim: The aim of the study was to evaluate the frequency of asymptomatic AF in patients with implanted pacemakers.
Material and methods: Into study were included 84 patients (54% female, average age 79 +/-9 years) with sick sinus syndrome or atrial-ventricular block, who had implanted dual-chamber pacemaker with AF episodes registering function. In 34 (40%) patients incidents of AF in a device memory were found. Every patient was evaluated on the presence of typical symptoms of AF and AF episodes registered in a device memory were correlated with these symptoms. In 32 (38%) of patients were confirmed asymptomatic incidents of AF.
Conclusions: Thirty eight percent of patients have asymptomatic AF incidents. Possibility of registration AF episodes through the implanted pacemaker helps us to apply anticoagulant therapy recommended by guidelines.