Residual Dizziness After Successful Canalith Repositioning: Impact on Cognitive Function and Dual-Task Performance in BPPV Patients

Objectives: This study investigated the impact of residual dizziness (RD) after successful canalith repositioning manoeuvre (CRM) on cognitive functions and dual-task performance in patients with benign paroxysmal positional vertigo (BPPV). Methods: Forty-four patients with posterior canal BPPV were assessed one week after successful treatment and divided into two groups: with RD (n=22) and without RD (n=22). Cognitive function was evaluated using the Stroop Test TBAG form and Digit Span test. Dual-task performance was assessed with a combination of the Timed Up and Go test and Digit Span test. Results: RD was associated with longer BPPV duration, higher anxiety, and disability levels (p< 0.05). Patients with RD performed worse on the Stroop test (p0.05), while no significant differences were found in digit span or dual-task performance (p0.05). Conclusion: The results highlight a dynamic interplay between cognitive and vestibular systems. RD may impair cognitive performance, while baseline cognitive deficits may also increase vulnerability to RD.