Publications by authors named "John Alexander Rutka"
Article Synopsis
- This study investigates dizziness in individuals who have suffered head injuries and differentiates between those with central vestibular dysfunction (CVD) and those with post-traumatic peripheral vestibular issues.
- The research retrospectively analyzed data from a neurotology database covering head-injured workers, including detailed medical histories, audiovestibular tests, and imaging studies.
- Results showed that while CVD is rare, it often involves significant symptoms like persistent imbalance and eye movement abnormalities, suggesting more severe brain injuries, which were not always detectable on scans.
Objective: To evaluate the benefit of vestibular rehabilitation therapy (VRT) in the management of patients with idiopathic cerebellar ataxia with bilateral vestibulopathy (iCABV).
Background: iCABV is a hindbrain degenerative disorder with impairment of both central and peripheral vestibular pathways. There is combined failure of four compensatory eye movement systems including the vestibulo-ocular reflex (VOR), optokinetic reflex, smooth pursuit and the visually enhanced vestibulo-ocular reflex (VVOR).
Unlabelled: Impairment of ipsilesional vestibulo-ocular reflex (VOR) function is well described in vestibular schwannoma (VS) and a correlation between gain of the VOR and tumor size has been suggested. Bilateral VOR impairment may also occur in VS patients, but its mechanisms are poorly understood. We sought to explore the effect of unilateral VS on ipsilesional and contralesional high-acceleration VOR function using video head impulse testing, and evaluate potential factors responsible for contralesional VOR impairment.
View Article and Find Full Text PDFObjectives: Several studies have reported an association between benign paroxysmal positional vertigo (BPPV) and bone mineral density or serum vitamin D levels. The aim of this review is to provide further clarification regarding the relationship between BPPV and calcium metabolism.
Design: PubMed and MEDLINE databases were systematically reviewed to identify all English language papers regarding the relationship between BPPV and the following terms: osteoporosis, osteopenia, bone mineral density, serum vitamin D levels, and bone metabolism.
Background: Vestibular evoked myogenic potentials (VEMPs) have an accepted role in the diagnosis of the superior semicircular canal dehiscence (SSCD) syndrome. The current impression is that ocular VEMPs (oVEMPs) are more sensitive than cervical VEMPs (cVEMPs) for detecting a SSCD and that oVEMP testing in response to air conducted sound provides an excellent screening test without risk of radiation exposure from computerized tomography (CT).
Aims/objectives: To report on patients with elevated oVEMP amplitudes but without evidence for a SSCD on multiplanar CT imaging.
Objectives: This study reports long-term results of blind sac closure of the external auditory canal performed for various pathologies, compares the complication rates and the need for revision surgery.
Materials And Methods: This study is a retrospective review. Ninety-six cases of blind sac closure performed for various pathologies were included in this study.
Purpose: To report our long-term results in surgical management of invasive intralabyrinthine cholesteatoma.
Material And Methods: The study is a case series in a tertiary referral center. Retrospective chart review of all mastoid operations performed for chronic ear disease between 1994 and 2019 at University Health Network, Toronto.
Objectives/hypothesis: Neurotological findings secondary to electrical injuries have rarely been reported in the world literature. We attempt to characterize the neurotological findings following electrical injury and to determine the role head injury and loss of consciousness play in this population's clinical presentation.
Study Design: Retrospective cohort study.