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J Korean Bal Soc > Volume 3(1); 2004 > Article
Journal of the Korean Balance Society 2004;3(1): 150-155.
비전형적 체위 혹은 두위 변환성 어지럼에서 보이는 하향 안진의 임상분석
, , , 한규철1, 이주형1, 이은정1, 송재준2
가천의과대학교 이비인후-두경부외과학교실1, 고려대학교 의과대학 이비인후-두경부외과학교실2
Clinical Analysis of Down Beat Nystagmus in Atypical Positional/ing Vertigo
Gyu Cheol Han, Ju Hyoung Lee, Eun Jung Lee, Jae Jun Song
1Department of Otolaryngology-Head & Neck Surgery, Gil Medical Center, Gachon Medical School, Incheon, Korea. Han@ghil.com
2Department of Otolaryngology-Head & Neck Surgery, Korea University College of Medicine, Seoul, Korea.
Background and Objectives : Traditionally, down beat nystagmus is regarded as a sign of central nervous system dysfunction. But, several years has passed since Herdman et al reported the down beat nystagmus developed during treatment maneuvers for posterior semicircular canal benign paroxysmal positional vertigo(BPPV). We undertook this study to evaluate the character and clinical analysis of the positional or positioning down beat nystagmus, to discuss the clinical significance of positional or positioning down beat nystagmus as a diagnostic criteria of superior semicircular canal BPPV, and to propose the new treatment method. Materials and Method : From November 1999 to March 2004, we sampled the 103 patients with positional or positioning down beat nystagmus. Of these patients, we selected 16 patients except for the patients with central nervous system dysfunction, nonspecific or artifact result, idiopathic origin. Results : All of 16 patients had no sign and radiologic result of central nervous system disorder. 10 patients was reported or suspected the diagnosis of posterior semicircular canal BPPV. Fatigability was reported in 9 patients and reversibility was reported in 1 patient. Average latency was checked less than 2 seconds. Conclusion : Although the diagnostic criteria of superior semicircular canal BPPV that we reported was not controversial, we expect that this criteria is useful in diagnosis for patients with atypical positional or positioning down beat nystagmus. And the new treatment method that we reported will has the better results than previous method. Key Words : Benign paroxysmal vertigo, Positional vertigo, Superior semicircular cana
Keywords: Benign paroxysmal vertigo; Positional vertigo; Superior semicircular canal
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