Impact of an Educational Intervention on BPPV Management: An Interrupted Time Series Analysis

This study evaluates the impact of an educational intervention aimed at improving the management of benign paroxysmal positional vertigo (BPPV) in a clinical setting. Interrupted Time Series (ITS) analysis was used to assess changes in the use of key diagnostic maneuvers—Dix–Hallpike and Supine Roll—as well as the treatment maneuver, Canalith Repositioning Maneuvers (CRM), and the use of CT scans. The intervention aimed to promote evidence-based practices and minimize unnecessary imaging. ITS models accounted for confounders such as history of BPPV and dizziness. The results showed significant improvements in the use of the Supine Roll and CRM maneuvers, with both immediate increases and sustained upward trends following the intervention. For the Dix–Hallpike maneuver, an initial increase was observed after the intervention; however, this effect was no longer statistically significant after adjusting for confounders, suggesting that the observed change may have been influenced by shifts in the patient population rather than the intervention itself. A positive long-term trend persisted. No significant reduction in CT scan usage was found. These findings demonstrate the intervention’s effectiveness in enhancing adherence to recommended diagnostic and treatment practices for BPPV. However, they also suggest that reducing unnecessary imaging may require additional strategies beyond provider education.