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OBJECTIVE The purpose of this study was to determine the effectiveness of a new liberatory maneuver in the management of the geotropic variant of horizontal canal paroxysmal positional vertigo (HC-PPV). STUDY DESIGN Case review. SETTING Outpatient clinic. PATIENTS The diagnosis of HC-PPV was based on the history of recurrent sudden crisis of vertigo(More)
The object of this paper was to evaluate the binaural hearing in 20 patients suffering from unilateral otosclerosis. Binaural performance was assessed at a test frequency of 500 Hz using masking level difference (MLD) before and after surgery. The postsurgical results showed abnormal MLDs in patients in whom stapedotomy had successfully corrected the(More)
OBJECTIVE The purpose of this study was to determine the effectiveness of a new physical maneuver in the treatment of the apogeotropic variant of horizontal canal benign paroxysmal positional vertigo. STUDY DESIGN Case review. SETTING Outpatient clinic. PATIENTS The diagnosis of apogeotropic horizontal canal benign paroxysmal positional vertigo was(More)
Basic mechanisms underlying the tolerance and reaction of the central nervous system to ionizing radiation have not been fully elucidated in the literature. The authors employed the [14C]-2-deoxy-D-glucose autoradiography method to investigate the effect of whole-brain x-irradiation on local cerebral glucose utilization in the rat brain. The animals were(More)
OBJECTIVES/HYPOTHESIS The objective was to evaluate dizziness as the first symptom of endolymphatic hydrops, which could provide valuable information on the initial stages of endolymphatic hydrops development. STUDY DESIGN The present investigation was specifically designed to establish whether a combination of the traditional glycerol test and the(More)
Basic mechanisms underlying the tolerance and reaction of the central nervous system to ionizing radiation are not known precisely. We investigated the possibility of a change in blood-brain barrier (BBB) function as a causative factor for early delayed whole-brain radiation-induced cerebral dysfunction. Rats were exposed to conventional fractionation (200(More)
To stimulate therapeutic irradiation, we exposed rats to conventional fractionation (200 +/- 4 cGy/d, 5 d/wk; total dose, 4000 cGy). The effects of this regimen were assessed by electron microscopic examinations of brain microvascular and parenchymal cells 15 and 90 days after irradiation. Studies of the transendothelial passage of horseradish peroxidase(More)
OBJECTIVES The diagnosis of vestibular neurolabyrinthitis is based on the sudden appearance of vertigo that lasts for hours or days without associated cochlear or central nervous system signs or symptoms. The advent of the video head impulse test, cervical vestibular evoked myogenic potential testing, and ocular vestibular evoked myogenic potential testing(More)
OBJECTIVES We analyzed the behavior of preoperative and postoperative vestibular evoked myogenic potentials (VEMPs) and vestibular evoked periocular potentials (VEPPs) in 3 patients who had vestibular schwannoma and underwent modified translabyrinthine surgery. METHODS We compared VEMPs and VEPPs, measured with both air-conducted (AC) and bone-conducted(More)