前庭神経炎,耳帯状疱疹,突発性難聴の減衰振子様回転検査からみた病因の検討
1982 年 41 巻 1 号 p. 76-82
詳細
1982 年 41 巻 1 号 p. 76-82
ENG examination were performed in 1, 457 patients in the past six years at Tokai University Hospital. Remarkable directional preponderance (DP) was occa-sionally found on the damped pendular rotation test of Greiner (épreuve rotatoire pendulaire), especially in patients with vestibular neuronitis and herpes zoster oticus with vertigo.
Strong DP on the damped pendular rotation test was confirmed in the patients whose threshold of nystagmic response to counter-DP side was above 12°/sec2 of maximum acceleration in this study.
In those examined within thirty six days after the onset of vertigo strong DP was found when viral infection such as the following were implicated: seven of the 15 patients with vestibular neuronitis (46.7%), four of the nine patients with herpes zoster oticus with vertigo (44.4%), one of the three patients with labyrinthine disorder due to mumps (33.3%), three of the 34 patients with sudden deafness with vertigo (8.8%) but none of the 22 patients with sudden deafness without vertigo.
Patients with strong DP had remarkable positional nystagmus in ENG but never showed signs of disorder indicative of the central vestibular system involvement on the optokinetic nystagmus pattern test. eye tracking test or damped pendular rotation test, Most of them presented unilateral canal paresis on the caloric test.
From the survey of histopathological findings of these diseases in the literature strong DP in the damped pendular rotation test suggests viral infection of the vestibular nerve.
