Effects of postural restriction after modified Epley maneuver on recurrence of benign paroxysmal positional vertigo.

Objective: In the present study, we calculated the success rate of the modified Epley maneuver and determined the effectiveness of post-maneuver positional restriction in terms of the prevention of early and late recurrence.

Methods: The present study was conducted on 78 patients who had unilateral benign paroxysmal positional vertigo (BPPV) of the posterior semicircular canal (SCC) and who were treated in the Otorhinolaryngology Department of Susehri State Hospital. The Dix-Hallpike test was performed on all patients. After the involved canal was identified using this test, we guided patients through the modified Epley repositioning maneuver. A maximum of two maneuvers were performed in the same session. The patients were randomly divided into two groups. One group was not advised any positional restriction, while the second group was advised positional restriction for 10 days after the procedure. Recurrences during 1-90 days after the treatment were noted as early recurrences, while those that occurred after 90 days were noted as late recurrences.

Results: In the restriction group (n=39), repositioning was successful after a single maneuver in 32 (82.05%) patients and after two maneuvers in 5 (12.8%) patients. Repositioning failed in two (5.1%) patients. In the non-restriction group (n=39), repositioning was successful after a single maneuver in 31 (79.4%) patients and after two maneuvers in 6 (15.3%) patients. Repositioning failed in two (5.1%) patients. Thus, the success rate was 94.8% in each group. Early recurrence occurred in 3 (8.1%) of 37 patients in the restriction group and 2 (5.4%) of 37 patients in the non-restriction group (p>0.05). Late recurrence occurred in 5 (13.5%) of 37 patients in both the restriction and non-restriction groups (p>0.05).

Conclusion: Postural restriction after a canalith repositioning procedure does not improve procedural success or decrease early and late recurrence rates. However, the number of patients was too small to detect a difference between both treatment groups.