Benign paroxysmal positional vertigo with multiple canal involvement / 中国耳鼻咽喉头颈外科

ABSTRACT

OBJECTIVE To describe the type, clinical features and curative effect of benign paroxysmal positional vertigo with multiple canal involvement. METHODS Retrospective analysis was performed on 1502 patients diagnosed with BPPV. Multiple canal BPPV was diagnosed by Dix-Hallpike and roll test, which showed combination of typical nystagmus during the examination, and was treated by means of canalith repositioning manoeuvre. RESULTS Among the 1502 patients, multiple canal BPPV was diagnosed in 162 patients(10.8％), 74 patients(45.7％) had horizontal and posterior canal, 48 patients(29.6％) had bilateral posterior canal, 20 patients (12.3％) had posterior and anterior canal, 10 patients(6.2％) had bilateral horizontal canal, 6 patients(3.7％) had horizontal and anterior canal, 4 patients(2.5％) had bilateral anterior canal. Multiple canal BPPV was more associated with head trauma, a longer duration of treatment and more repositioning times were required in multiple canal BPPV compared with single canal BPPV. CONCLUSION The horizontal and posterior canal was the most common in the multi-canal BPPV, the treatment of multi-canal BPPV can be effective by repositioning maneuver.