Influencing Factors for Residual Symptoms Following Canalith Repositioning Maneuver in Patients with Benign Paroxysmal Positional Vertigo

Objectives: We aimed to analyze the influencing factors for residual symptoms following canalith repositioning maneuvers in patients with benign paroxysmal positional vertigo (BPPV). Methods: A total of 193 patients with BPPV who attended our hospital from July 2019 to December 2023 and were followed up in the outpatient clinic for 4 weeks after treatment were selected. The presence or absence of residual symptoms 4 weeks after repositioning was recorded, based on which the patients were assigned into a presence group (n = 72) and an absence group (n = 121). Their general data, incidence features, mental health, and sleep quality were compared. Results: After canalith repositioning maneuver and 4-week follow-up, the Dizziness Handicap Inventory (DHI) scores, Hospital Anxiety and Depression Scale (HADS) scores, and Pittsburgh Sleep Quality Index (PSQI) scores of the BPPV patients significantly decreased (P < .05). The presence of residual symptoms after repositioning in patients with BPPV had significant positive correlations with the time from onset to consultation, DHI score, HADS anxiety score, and PSQI score (P < .05). The area under the curve of the DHI score for predicting residual symptoms after repositioning in patients with BPPV was the largest (0.727), and the time from onset to consultation and the HADS anxiety score had the highest sensitivity (0.764) and specificity (0.801), respectively. Conclusions: Time from onset to consultation, DHI score, HADS anxiety score, and PSQI score are independent risk factors for and display significantly positive correlations with residual symptoms after canalith repositioning maneuver in patients with BPPV.