What maneuvers effectively treat posterior canal benign paroxysmal positional vertigo (BPPV)?
Conclusion Two Class I studies and three Class II studies have demonstrated a short-term (1 day to 4 weeks) resolution of symptoms in patients treated with the canalith repositioning procedure (CRP), with number needed to treat (NNT) ranging from 1.43 to 3.7. The Semont maneuver is possibly more effective than no treatment (Class III), a sham treatment (Class II), or Brandt–Daroff exercises (Class IV) as treatment for posterior canal BPPV. Two Class IV studies comparing CRP with Semont maneuver have produced conflicting results; one showed no difference between groups, and the other showed a lower recurrence rate in patients undergoing CRP. Recommendation CRP is established as an effective and safe therapy that should be offered to patients of all ages with posterior semicircular canal BPPV (Level A recommendation). The Semont maneuver is possibly effective for BPPV but receives only a Level C recommendation based on a single Class II study. Although many experts believe that the Semon
