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https://www.readbyqxmd.com/read/28446038/clinical-criteria-of-positional-vertical-nystagmus-in-vestibular-migraine
#1
Mohamed Mohamed El-Badry, Hesham Samy, Abdel Mageed Kabel, Fatma Mohamed Rafat, Hossam Sanyelbhaa
OBJECTIVES: The goal of this study was to identify key diagnostic criteria for positional vertical nystagmus caused by vestibular migraine (VM). MATERIALS AND METHODS: The study group included a case series of 13 subjects with VM (10 females and three males with age 38.6 ± 8.9 years); they were complaining of positional vertigo. They were subjected to thorough audiovestibular examination and treated with cinnarizine or topiramate Results: The entire study group demonstrated positional vertical nystagmus (eight patients had up-beating nystagmus and five patients had down-beating nystagmus)...
April 27, 2017: Acta Oto-laryngologica
https://www.readbyqxmd.com/read/28441825/-progressive-cavitating-leukoencephalopathy-four-cases-and-literatures-review
#2
C H Ren, F Fang, H Cheng, C H Ding, C H Chen, Y J Zhang, D M Shen
Objective: To analyze the clinical and genetic features of progressive cavitating leukoencephalopathy (PCL). Method: The data of clinical and genetic features of 4 PCL patients diagnosed by Beijing Children's Hospital between January 2015 and January 2016 were analyzed. The cases with complete clinical data retrieved on literature search at China National Knowledge Infrastructure, Wanfang Data Knowledge Service Platform and PubMed (up to August 2016) by using search terms of"NDUFV1" ,"NDUFS1" , or"leukoencephalopathy" , were summarized...
April 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28440863/fewdon-mnd-syndrome-finger-extension-weakness-and-downbeat-nystagmus-a-novel-motor-neuron-disorder
#3
Aline Delva, Nimish Thakore, Erik Pioro, Koen Poesen, Rachel Saunders-Pullman, Inge A Meijer, Janet C Rucker, John T Kissel, Philip Van Damme
Introduction Disturbances of eye movements are infrequently encountered in motor neuron diseases or motor neuropathies, and there is no known syndrome that combines progressive muscle weakness with downbeat nystagmus. Methods To describe the core clinical features of a syndrome of motor neuron disease associated with downbeat nystagmus, clinical features were collected from 6 patients. Results All patients had slowly progressive muscle weakness and wasting, in combination with downbeat nystagmus, which was clinically most obvious in downward and lateral gaze...
April 25, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28429801/the-dizzy-patient-don-t-forget-disorders-of-the-central-vestibular-system
#4
REVIEW
Thomas Brandt, Marianne Dieterich
Vertigo and dizziness are among the most common complaints in neurology clinics, and they account for about 13% of the patients entering emergency units. In this Review, we focus on central vestibular disorders, which are mostly attributable to acute unilateral lesions of the bilateral vestibular circuitry in the brain. In a tertiary interdisciplinary outpatient dizziness unit, central vestibular disorders, including vestibular migraine, comprise about 25% of the established diagnoses. The signs and symptoms of these disorders can mimic those of peripheral vestibular disorders with sustained rotational vertigo...
April 21, 2017: Nature Reviews. Neurology
https://www.readbyqxmd.com/read/28429145/cataract-and-early-nystagmus-due-to-galactokinase-deficiency
#5
Vladimir Bzduch, Dana Tomcikova, Anton Gerinec, Darina Behulova
No abstract text is available yet for this article.
April 20, 2017: Journal of Inherited Metabolic Disease
https://www.readbyqxmd.com/read/28424657/magnetic-vestibular-stimulation-mvs-as-a-technique-for-understanding-the-normal-and-diseased-labyrinth
#6
REVIEW
Bryan K Ward, Jorge Otero-Millan, Prem Jareonsettasin, Michael C Schubert, Dale C Roberts, David S Zee
Humans often experience dizziness and vertigo around strong static magnetic fields such as those present in an MRI scanner. Recent evidence supports the idea that this effect is the result of inner ear vestibular stimulation and that the mechanism is a magnetohydrodynamic force (Lorentz force) that is generated by the interactions between normal ionic currents in the inner ear endolymph and the strong static magnetic field of MRI machines. While in the MRI, the Lorentz force displaces the cupula of the lateral and anterior semicircular canals, as if the head was rotating with a constant acceleration...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28416082/final-diagnosis-of-patients-with-clinically-suspected-vestibular-neuritis-showing-normal-caloric-response
#7
Sung Hwan Ahn, Jung Eun Shin, Chang-Hee Kim
Vestibular neuritis is one of the most common peripheral causes of acute vestibular syndrome, of which the diagnosis is generally based on a comprehensive interpretation of clinical and laboratory findings following reasonable exclusion of other disorders. This study aimed to investigate the final diagnosis of patients admitted to hospital under the clinical impression of vestibular neuritis who showed no unilateral caloric paresis. Forty-five patients who visited the emergency department with isolated acute spontaneous vertigo were included...
April 13, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28414694/ipsilesional-nystagmus-induced-by-vibration-in-subjects-with-m%C3%A3-ni%C3%A3-re-s-disease-or-vestibular-schwannoma
#8
María Fernanda Vargas Gamarra, Claudio Krstulovic, Vanesa Pérez Guillén, Herminio Pérez-Garrigues
OBJECTIVE: To analyze the frequency in which vibration-induced nystagmus (VIN) with ipsilesional direction appears in subjects with Ménière's disease (MD) or vestibular schwannoma (VS). STUDY DESIGN: Cross-sectional study. SETTING: Tertiary referral center. PATIENTS: Fifty-two subjects with MD and 21 subjects with vestibular schwannoma. INTERVENTION: Videonystagmographic recordings of VIN at 30, 60, and 100 Hz...
April 14, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28412799/-long-term-outcomes-after-cataract-surgery-in-infants-with-congenital-cataract
#9
J Y Qi, W Xiao, M Y Wang, D X Zhao, W Pu
Objective: To observe the long-term outcomes after congenital cataract surgery performed prior to 36 months of age. Methods: A retrospective case study was conducted. Thirty-two cases (57 eyes) of congenital cataract were included from January 2004 to January 2012. All patients received intraocular lens (IOL) implantation with posterior continuous curvilinear capsulorhexies and anterior vitrectomy after cataract extraction and were followed up. At the last visit, the best corrected visual acuity (BCVA) was determined and postoperative complications were evaluated during follow-up with a longest time of 13 years...
April 11, 2017: [Zhonghua Yan Ke za Zhi] Chinese Journal of Ophthalmology
https://www.readbyqxmd.com/read/28410279/ocular-motor-manifestations-of-multiple-sclerosis
#10
Elodie Nerrant, Caroline Tilikete
BACKGROUND: Multiple sclerosis (MS) is a demyelinating disease of the central nervous system leading to disability, especially in young patients. Acute or chronic lesions of MS within the brainstem and the cerebellum frequently result in ocular motor disorders. EVIDENCE ACQUISITION: This review encompasses the spectrum of ocular motor disorders in patients with MS emphasizing prevalence, examination findings, diagnostic features, functional consequences, classification of MS course, and management of these disturbances of ocular motility...
April 13, 2017: Journal of Neuro-ophthalmology: the Official Journal of the North American Neuro-Ophthalmology Society
https://www.readbyqxmd.com/read/28407410/variable-clinical-course-of-identical-twin-neonates-with-alstr%C3%A3-m-syndrome-presenting-coincidentally-with-dilated-cardiomyopathy
#11
Seth A Hollander, Norah Alsaleh, Maura Ruzhnikov, Kristen Jensen, David N Rosenthal, David A Stevenson, Melanie Manning
Alström Syndrome (AS) is a rare autosomal recessive disorder caused by mutations in the ALMS1 gene. We report monozygotic twin infants who presented concurrently with symptoms of congestive heart failure (CHF) due to dilated cardiomyopathy (DCM). Following their initial presentation, one twin improved both echocardiographically and functionally while the other twin showed a progressive decline in ventricular function and worsening CHF symptoms requiring multiple hospitalizations and augmentation of heart failure therapy...
April 13, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/28399055/long-term-visual-and-ocular-sequelae-in-patients-with-congenital-cytomegalovirus-infection
#12
Haoxing Jin, Gail J Demmler-Harrison, David K Coats, Evelyn A Paysse, Amit Bhatt, Jane C Edmond, Kimberly G Yen, Paul Steinkuller, Jerry Miller
BACKGROUND: Cytomegalovirus (CMV) is the most common congenital viral infection in the United States. Visual and ocular sequelae in adolescents and adults who are congenitally infected with CMV have not been well studied. Better understanding of the long-term visual and ocular sequelae can help with early detection, intervention, and appropriate educational accommodations. METHODS: This study evaluated 237 (77 symptomatic, 109 asymptomatic, and 51 control) patients who underwent a series of age-appropriate ophthalmologic, audiologic, and neurodevelopmental examinations from 1982 to 2013...
April 10, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28395493/-light-cupulopathy-persistent-direction-changing-positional-nystagmus-with-a-null-plane
#13
S J Wang, H Jiang, Z Q Gao, H Y Wu
Objective: The purpose of this study was to report two cases of light cupulopathy, and describe the characteristics of these cases and analysis the possible physiopathological mechanisms. Methods: The histories, clinical features, characteristics of nystagmus, and vestibular function, as well as audiologic results of the two patients with light cupula were analyzed. Results: The two patients showed persistent geotropic direction changing positional nystagmus(DCPN)in the supine head roll tests. The null plane was present when the head was turn slightly towards affected side...
March 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28395492/-the-clinical-features-and-efficacy-of-patients-with-geotropic-direction-changing-positional-nystagmus
#14
H Peng, L Y Wang, H T Song, W N Huang
Objective: The purpose of this study was to observe the clinical characteristics of two types of geotropic direction-changing positional nystagmus, the transient(nystagmus time <1 min) and the persistent(nystagmus time > 1 min), and to evaluate the efficacy of the barbecue roll maneuver. Methods: A total of 105 cases diagnosed by supine roll test were studied, which including 35 males and 70 females and the average age was (56.9±14.6)years. There were 70 transient geotropic DCPN and 35 persistent geotropic DCPN...
March 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28395491/-the-significance-of-directional-preponderance-in-the-evaluation-of-vestibular-function-in-patients-with-vertigo
#15
J Wang, Y J Zhou, J Yu, J Gu
Objective: To analyze the relationship between directional preponderance (DP), spontaneous nystagmus(SN) and vestibular disorders, and to investigate the significance of DP in directing peripheral vestibular function in patients with vertigo. Methods: This was a retrospective analysis of 394 cases diagnosed with peripheral vestibular disease accompanied by vertigo from March 2012 to June 2014 in the Outpatient Department of the Eye & ENT Hospital of Fudan University. Results of static and dynamic posture equilibrium tests, SN, unilateral weakness(UW), and DP in videonystagmography(VNG) were analyzed and compared...
March 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28395489/-frequency-characteristics-of-the-semicicular-canals-damage-in-patients-with-meniere-disease
#16
K X Xu, T S Chen, W Wang, S S Li, Q Liu, C Wen, X Han, P Lin
Objective: To evaluate semicircular canal damage and its frequency characteristics in Meniere disease patients. Methods: Sixty-seven Meniere disease patients accepted the video-head impulse test(vHIT)which responses to semicircular canal function of high frequency area, head shaking test(HST) which responses to semicircular canal function of middle frequency area, and caloric test(CT) which responses to semicircular canal function of low frequency area.Preferences were recorded including the video head impulse test gain (vHIT-G), head shaking nystagmus (HSN) and parameters of the unilateral weakness (UW) as observation index, and results of all the three tests were analyzed according to Meniere disease patients...
March 7, 2017: Zhonghua Er Bi Yan Hou Tou Jing Wai Ke za Zhi, Chinese Journal of Otorhinolaryngology Head and Neck Surgery
https://www.readbyqxmd.com/read/28388668/effect-of-visual-attention-on-the-properties-of-optokinetic-nystagmus
#17
Kei Kanari, Kiyomi Sakamoto, Hirohiko Kaneko
It has been demonstrated that optokinetic nystagmus (OKN) gain increases through attention to peripheral motion when the central visual field is occluded. However, how the properties of OKN change when two areas containing motion in different directions are presented in the peripheral visual field is still unclear. In this study, we investigated whether OKN corresponding to the attended motion in the periphery occurred while the observer was maintaining fixation at the center. We presented two areas with different directions of motion arranged on the left and right, top and bottom, or center and surrounding (concentric) areas in the display...
2017: PloS One
https://www.readbyqxmd.com/read/28380077/vection-is-the-main-contributor-to-motion-sickness-induced-by-visual-yaw-rotation-implications-for-conflict-and-eye-movement-theories
#18
Suzanne A E Nooij, Paolo Pretto, Daniel Oberfeld, Heiko Hecht, Heinrich H Bülthoff
This study investigated the role of vection (i.e., a visually induced sense of self-motion), optokinetic nystagmus (OKN), and inadvertent head movements in visually induced motion sickness (VIMS), evoked by yaw rotation of the visual surround. These three elements have all been proposed as contributing factors in VIMS, as they can be linked to different motion sickness theories. However, a full understanding of the role of each factor is still lacking because independent manipulation has proven difficult in the past...
2017: PloS One
https://www.readbyqxmd.com/read/28378818/development-and-clinical-utility-of-a-novel-diagnostic-nystagmus-gene-panel-using-targeted-next-generation-sequencing
#19
Mervyn G Thomas, Gail DE Maconachie, Viral Sheth, Rebecca J McLean, Irene Gottlob
Infantile nystagmus (IN) is a genetically heterogeneous disorder arising from variants of genes expressed within the developing retina and brain. IN presents a diagnostic challenge and patients often undergo numerous investigations. We aimed to develop and assess the utility of a next-generation sequencing (NGS) panel to enhance the diagnosis of IN. We identified 336 genes associated with IN from the literature and OMIM. NimbleGen Human custom array was used to enrich the target genes and sequencing was performed using HiSeq2000...
April 5, 2017: European Journal of Human Genetics: EJHG
https://www.readbyqxmd.com/read/28377827/anti-yo-mediated-paraneoplastic-cerebellar-degeneration-associated-with-pseudobulbar-affect-in-a-patient-with-breast-cancer
#20
Allison N Martin, Patrick M Dillon, David E Jones, David R Brenin, David A Lapides
Paraneoplastic cerebellar degeneration (PCD) is a rare anti-Yo mediated paraneoplastic syndromes rarely that is infrequently associated with breast cancer. We present a case of a 52-year-old female presenting with diplopia, gait instability, dysarthria, dysphagia, nystagmus, and, most notably, new onset paroxysmal episodes of uncontrollable crying concerning for pseudobulbar affect (PBA). Serologic testing showed anti-Yo antibodies. The patient was found to have stage IIIA breast cancer as the inciting cause of the paraneoplastic syndrome...
2017: Case Reports in Oncological Medicine
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