The Equilibrium Test for Olfactory Vertigo in Patients with Cranio-Cervical Injury

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  • においとめまい
  • ニオイ ト メマイ トウケイブ ガイショウ コウイ ショウレイ デ エラレタ
  • 頭頸部外傷後遺症例で得られた2, 3の知見

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Abstract

The equilibrium test for olfactory vertigo was carried out on patients with vertigo due to head and neck injury. The following results were obtained.<br>(1) The equilibrium test for olfactory vertigo was carried out using the test for spontaneous nystagmus, vertical writing with eyes covered (Fukuda) and the stepping test. Among these, vertical writing with the eyes covered was the most effective for the detection of olfactory vertigo when the equilibrium test for olfactory vertigo was carried out on patients with head and neck injury.<br>(2) A positive sign of the equilibrium test for olfactory vertigo was more conspicuous in patients with head trauma than in those with whiplash injury.<br>(3) Some of patients with head and neck injury showed a peculiar phenomenon in the sense that the results from the test for spontaneous nystagmus were worse, while those from the stepping test were improved.<br>(4) A positive sign of the test for olfactory vertigo was the most marked in patients who had experienced an occipital blow. In contrast, it was the least marked in patients who had had blows in the temporal region and the face. Similar results were obtained when the equilibrium test with adrenaline loading (Hinoki 1971) was carried out on the same groups of patients as above. This means that in the case of occipital blow, over-excitement of adrenergic component involved in the olfactory system is the most conspicuous, which causes olfactory vertigo most markedly.<br>(5) Among various blows on the skull, the occipital blow caused cerebellar dysfunction most conspicuously. Cerebellar dysfunction is reportedly to reinforce olfactory vertigo. Thus, patients who have experienced both an occipital blow and cerebellar dysfunction show vertigo of this type most conspicuously.

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