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  • Title: Treatment of benign paroxysmal positional vertigo of posterior semicircular canal by "Quick Liberatory Rotation Manoeuvre".
    Author: Califano L, Capparuccia PG, Di Maria D, Melillo MG, Villari D.
    Journal: Acta Otorhinolaryngol Ital; 2003 Jun; 23(3):161-7. PubMed ID: 14677308.
    Abstract:
    Treatment of Benign Paroxysmal Positional Vertigo is based on Semont's Liberatory Manoeuvre and on so-called "Canalith Repositioning Manoeuvres", derived from the original Epley technique. Both manoeuvres are very effective and choice of which to use depends on the experience of the physician. Semont's manoeuvre requires a quick movement of the patient in mass in the frontal plane, from the involved, to the contralateral side, which sometimes causes symptoms such as nausea or vomiting. In this technique, a secondary liberatory nystagmus is often observed as sign of the success of the manoeuvre. Repositioning manoeuvres are less fastidious because of the slow movements, but we rarely observe an objective sign of success like the liberatory nystagmus. In the present randomised trial, 300 patients with posterior canalo/cupulolithias were divided into 3 treatment groups: 100 treated by Semont Technique; 100 by a Repositioning procedure (Parnes technique); 100 by a new manoeuvre called "Quick Liberatory Rotation". Results of treatment are also compared with the natural evolution of Benign Paroxysmal Positional Vertigo observed in 18 untreated patients. Quick Liberatory Rotation is similar in the sequence of the positions of the head in the horizontal plane, to repositioning procedures, but is more like the Semont manoeuvre in the speed of the movement (about 180 degrees in less than one second). Quick Liberatory Rotation is easy to perform, well tolerated and very effective (success rate: 98% in one-three cycles). In the present investigation, a secondary liberatory nystagmus was observed in 76.1%, with a sensitivity of 81.9% in detecting patients who had completely recovered and a specificity of 43.8% in detecting failures. Effectiveness, in short and medium period (1-15 months), is similar to Semont and Parnes techniques. Authors consider Quick Liberatory Rotation, at present, a possible first choice technique in the treatment of posterior canalolithiasis.
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