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Figure 2

From: Vertical Nystagmus in the Bow and Lean Test may Indicate Hidden Posterior Semicircular Canal Benign Paroxysmal Positional Vertigo: Hypothesis of the Location of Otoconia

Figure 2

Vertical nystagmus in BLT in patients with posterior semicircular canal benign paroxysmal positional vertigo (n = 163). After treatment, remission was confirmed by the Dix-Hallpike test. In the 134 patients (82.2%, Group A), vertical nystagmus in the BLT also disappeared; however, it persisted in the remaining 29 patients (17.8%, Group B). Patients in Group B tended to complain of remnant symptoms after remission (44.8% in Group B and 23.9% in Group A, p = 0.022). BLT, Bow and Lean Test; PSC, posterior semicircular canal.

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