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Table 1 Direction of lying down nystagmus(LDN) and head bending nystagmus(HBN) in 50 patients

From: Lying-down nystagmus and head-bending nystagmus in horizontal semicircular canal benign paroxysmal positional vertigo: are they useful for lateralization?

  

Geotropic (N = 31)

Apogeotropic (N = 19)

Total (N = 50)

LDN

Directional LDN

63.2%(12/19)

46.7%(7/15)

55.9%(19/34)

Absent

38.7%(12)

21.1%(4)

32.0%(16)

HBN

Directional HBN

73.9%(17/23)

73.3%(11/15)

73.7%(28/38)

 

Absent

25.8%(8)

21.1%(4)

24.0%(12)

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BMC Ophthalmology

ISSN: 1471-2415

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