COGNITIVE FUNCTIONS IN PATIENTS WITH PAROXYSMAL AND PERMANENT ATRIAL FIBRILLATION BEFORE AND AT DIFFERENT STAGES AFTER PERMANENT PACEMAKER IMPLANTATION

To assess cognitive functions in patients with paroxysmal and permanent atrial fibrillation and the effect of permanent pacemaker implantation on them, 23 patients aged 62.8±5.5 years (men: 65.2%) were examined. To assess cognitive functions in patients with paroxysmal and permanent atrial fibrillation (AF) before and at different stages after implantation of permanent pacemaker, 23 patients with coronary heart disease aged 62.8±5.5 years (15 men [65.2%] and 8 women [34.8%]) were examined. The patients were distributed into two following groups: Group I (n=12; 52.2%) with permanent AF and Group II (n=11; 47.8%) with paroxysmal AF. The Status PF complex was used for assessment of cognitive functions. The parameters of visual and aural memory, attentional capacity, ideation using simple and complex analogies, simple hand-eye responses, as well as personal and state anxiety were assessed. The tests were performing before the pacemaker implantation as well as 5-7 days and 30-40 days following the pacemaker implantation. The comparative assessment of cognitive functions showed that both permanent and paroxysmal AF contributed to development of cognitive deficiency which was more pronounced in the patients with permanent AF. At the early stage after pacemaker implantation (Day 5 7), selected cognitive function parameters improved, primarily in the patients with paroxysmal AF. At the late stage after pacemaker implantation (Day 30 40), cognitive functions remained unchanged in the patients with paroxysmal AF and decreased in the patients with permanent AF. An insufficient improvement of cognitive functions in both groups could be caused by different reasons, including the negative impact of personal and state anxiety due to adaptation of a patient to pacemaker.

paroxysmal and permanent atrial fibrillation, permanent pacing, cognitive functions, auditory memory, visual memory

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