Variables affecting canalith repositioning maneuver (CRM) trend for treating patients with benign paroxysmal positional vertigo (BPPV)
2006
Background: The purpose of this study was to identify variables affecting outcome in
patients with benign paroxysmal positional vertigo (BPPV) treated with canalith
repositioning maneuver (CRM).
Methods: This interventional study was conducted on 58 patients (14 males, 44
females, mean age 48.12+13.22) referred to the Vertigo Rehabilitation Clinic of the
Rehabilitation School of Tehran University of Medical Sciences from 2002 to 2004.
All patients were treated with CRM. According to the treatment efficacy the patients
were allocated in three groups: completely treated, partially treated, and not treated.
The effect of factors including age, sex, etiology, duration of BPPV, unilateral or
bilateral disease, number of maneuvers, and number of sessions on outcome in patients
was evaluated.
Results: Forty-nine patients (84.5%) were completely cured. Age, sex, etiology, and
duration did not significantly affect the treatment outcome. Unilateral BPPV can be
treated significantly better than bilateral BPPV. Forty-seven patients who were
completely treated needed 1 session and thirty-seven of them required 2 maneuvers.
Conclusion: CRM is significantly effective for BPPV treatment. Treating unilateral
BPPV is expected to be easier. As most of the patients will be cured by 1 or 2
maneuvers or in 1 session, patients who required more sessions or more maneuvers
may not be completely treated.
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