Ichijo Ear, Nose and Throat Clinic, Hirosaki, Japan.
J Laryngol Otol. 2021 Oct;135(10):874-878. doi: 10.1017/S0022215121002097. Epub 2021 Aug 5.
Benign paroxysmal positional vertigo is classified into five subtypes according to the features of positional nystagmus: lateral canalolithiasis, lateral light cupula, lateral heavy cupula, posterior canalolithiasis and posterior heavy cupula.
The first aim of the study was to clarify whether the lateral canal type or posterior canal type was more common. The second aim of the study was to assess the aetiology of benign paroxysmal positional vertigo by investigating the onset time of each subtype.
The subjects were 512 consecutive patients with benign paroxysmal positional vertigo. The patients were prospectively aggregated, and interviews were used to evaluate onset time.
The lateral canal type (55.5 per cent) was more common than the posterior canal type (44.5 per cent). Time of awakening was the most common onset time in every subtype.
The incidence of lateral canal type is higher than that of posterior canal type. The aetiology of benign paroxysmal positional vertigo is closely related to sleep.
良性阵发性位置性眩晕根据位置性眼球震颤的特征分为五型：外侧半规管耳石症、外侧嵴帽耳石症、水平半规管管结石症、后半规管耳石症和后半规管嵴帽结石症。
本研究的首要目的是明确哪种类型（外侧型或后半规管型）更为常见。本研究的次要目的是通过对各亚型发病时间的研究，探讨良性阵发性位置性眩晕的病因。
512 例连续就诊的良性阵发性位置性眩晕患者纳入研究。采用前瞻性研究方法收集患者资料，通过访谈评估发病时间。
外侧型（55.5%）较后半规管型（44.5%）更为常见。各亚型中，晨起时发病最为常见。
外侧型较后半规管型更为常见。良性阵发性位置性眩晕的病因与睡眠密切相关。
