Abstract：
BACKGROUND: The Dix-Hallpike (DH) test is a gold standard for diagnosing benign paroxysmal positional vertigo (BPPV). However, lateral semicircular canal BPPV is not rare. We have been performing the new roll test that begins from the sitting position and contains a head-hanging position, in order not to overlook lateral canal BPPV. We noticed that transient vertical/torsional nystagmus sometimes occurs during the new roll test.
OBJECTIVE: To clarify the value of the new roll test in diagnosing posterior canal BPPV and elucidate the position that elicits nystagmus.
METHODS: The subjects were 100 consecutive patients (79 were female, 21 were male) with posterior canal BPPV. We classified the patients into four types based on a position that induced nystagmus.
RESULTS: The patient\'s position that elicited nystagmus varied. The supine type accounted for 24 %, the lateral type accounted for 62 %, the head-hanging type accounted for 9 %, and the DH type accounted for 5 %.
CONCLUSIONS: The new roll test is valuable for diagnosing posterior canalolithiasis cases. Most patients reveal vertical/torsional nystagmus in the supine or lateral position. Therefore, performing the new roll test first is efficient at the initial visit.
OBJECTIVE: To clarify the value of the new roll test in diagnosing posterior canal BPPV and elucidate the position that elicits nystagmus.
METHODS: The subjects were 100 consecutive patients (79 were female, 21 were male) with posterior canal BPPV. We classified the patients into four types based on a position that induced nystagmus.
RESULTS: The patient\'s position that elicited nystagmus varied. The supine type accounted for 24 %, the lateral type accounted for 62 %, the head-hanging type accounted for 9 %, and the DH type accounted for 5 %.
CONCLUSIONS: The new roll test is valuable for diagnosing posterior canalolithiasis cases. Most patients reveal vertical/torsional nystagmus in the supine or lateral position. Therefore, performing the new roll test first is efficient at the initial visit.
摘要：
背景：Dix-Hallpike（DH）测试是诊断良性阵发性位置性眩晕（BPPV）的金标准。然而,外侧半规管BPPV并不罕见。我们一直在进行新的滚动测试，该测试从坐姿开始，并包含一个悬头位置，为了不忽视侧管BPPV。我们注意到，在新的滚动测试中有时会发生瞬时垂直/扭转眼球震颤。
目的：阐明新的滚动试验在诊断后管BPPV中的价值，并阐明引起眼球震颤的位置。
方法：受试者为100名连续患者（79名女性，21人为男性），后管BPPV。我们根据诱发眼球震颤的位置将患者分为四种类型。
结果：引起眼球震颤的患者位置不同。仰卧型占24%，侧位型占62%,挂头型占9%，DH型占5%。
结论：新的滚动试验对后泪小管结石病例的诊断有价值。大多数患者在仰卧位或侧卧位显示垂直/扭转性眼震。因此,在初次访问时，首先执行新的滚动测试是有效的。
目的：阐明新的滚动试验在诊断后管BPPV中的价值，并阐明引起眼球震颤的位置。
方法：受试者为100名连续患者（79名女性，21人为男性），后管BPPV。我们根据诱发眼球震颤的位置将患者分为四种类型。
结果：引起眼球震颤的患者位置不同。仰卧型占24%，侧位型占62%,挂头型占9%，DH型占5%。
结论：新的滚动试验对后泪小管结石病例的诊断有价值。大多数患者在仰卧位或侧卧位显示垂直/扭转性眼震。因此,在初次访问时，首先执行新的滚动测试是有效的。
