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Femoral vein pulsatility: a simple tool for venous congestion assessment. Ultrasound J 2023; 15:24. [PMID: 37165284 PMCID: PMC10172460 DOI: 10.1186/s13089-023-00321-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2022] [Accepted: 04/10/2023] [Indexed: 05/12/2023] Open
Abstract
BACKGROUND Femoral vein Doppler (FVD) is simpler than the VExUS score which is a multimodal scoring system based on combination of IVC diameter, hepatic venous Doppler, portal vein pulsatility and renal vein Doppler, may be useful in assessing right ventricular overload and signs of venous congestion. There is limited data on the relationship between FVD and VExUS score. RESULTS Adult post-cardiac surgery patients were assessed for venous congestion using the VExUS score and FVD. Agreement between VExUS and FVD was studied using Kappa test, sensitivity, specificity, PPV and NPV for VExUS and FVD was calculated keeping CVP as gold standard. In total, 107 patients were enrolled, with a mean age of 55.67 ± 12.76. The accuracy of VExUS and FVD for detecting venous congestion was 80.37 (95% CI of 71.5 to 87.4) and 74.7 (95% CI of 65.4 to 82.6), respectively. The level of agreement between FVD and VExUS was moderate (Kappa value of 0.62, P < 0.001) while the agreement between FVD and CVP was weak (Kappa value of 0.49, P < 0.001). CONCLUSION FVD has good accuracy for detecting venous congestion and shows moderate agreement with VExUS grading. With potentially easier physical accessibility and a shorter learning curve for novices, it may be a simple and valuable tool for assessing venous congestion.
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1528TiP A phase II/III study evaluating the efficacy and safety of unesbulin in advanced leiomyosarcoma (SUNRISELMS). Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1917] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Collagen VI-Related Myopathy Caused by Compound Heterozygous Mutations of COL6A3 in a Consanguineous Kurdish Family. J Clin Neuromuscul Dis 2021; 22:173-179. [PMID: 33596003 DOI: 10.1097/cnd.0000000000000320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
ABSTRACT Collagen VI-related myopathies are caused by mutations of COL6A1, COL6A2, and COL6A3 and present with a wide phenotypic spectrum ranging from severe Ulrich congenital muscular dystrophy to mild Bethlem myopathy. Here, we report a consanguineous Kurdish family with 3 siblings affected by autosomal-recessive Bethlem myopathy caused by compound heterozygous mutations of COL6A3. We found the previously described missense mutation c.7447A > G/p.(Lys2483Glu) and a novel large deletion encompassing the exon 1-39 of the COL6A3 gene. Apart from the classical clinical symptoms, all patients had keratoconus, which expands the phenotype of the collagen VI-related myopathies.
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Novel truncating mutations of MYO18B causing congenital myopathy in a Swiss patient. Neurol Genet 2020; 6:e458. [PMID: 32637634 PMCID: PMC7323478 DOI: 10.1212/nxg.0000000000000458] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 05/14/2020] [Indexed: 11/15/2022]
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Abstract
SummaryDevelopment of treatments for dementia is beset by special problems in defining the diagnosis, establishing efficacy criteria, and specifying the necessary duration of study. There is need for agreement among clinicians and scientists on diagnostic subgroups of dementia. Similarly, there is a need for harmonization of the regulatory guidelines in Europe, Japan, and the United States regarding the decision set of variables on which to base efficacy claims. The duration of trials must be based upon the intended claim: transient symptomatic benefit, maintained symptomatic benefit, or a therapeutic effect on disease progression. Claims other than transient benefit require long-term trials, suggested to be of at least six months in duration. Problems with long-term studies include slow patient accrual, high dropout rates, changing milieu, low return on investment, and lack of unanimity regarding regulatory requirements. Regulatory authorities must come to some accord, consonant with current clinical/scientific wisdom and consensus, regarding diagnosis, efficacy criteria, and feasible study duration, in order to attract continued sponsor investment in the development of antidementia treatments.
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Uniparental Disomy of Chromosome 2 Unmasks New ITGA6 Recessive Mutation and Results in a Lethal Junctional Epidermolysis Bullosa in a Newborn. Acta Derm Venereol 2020; 100:adv00041. [PMID: 31502654 PMCID: PMC9128983 DOI: 10.2340/00015555-3313] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2019] [Indexed: 11/16/2022] Open
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Supportive care to control nausea and dizziness in malignant tumours: A systematic review. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz434.030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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8
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Painkiller-related dizziness in malignant tumors: A systematic review. Ann Oncol 2018. [DOI: 10.1093/annonc/mdy300.107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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814 Uniparental inheritance of junctional epidermolysis bullosa (JEB) through mutation of ITGA6 and trisomic rescue. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.824] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Abstract
We studied a family with pattern dystrophy of the retina (PDR) in order to elucidate the clinical course of the disorder, relations between the different forms, and the mode of inheritance. Thirty-nine family members, representing three generations, underwent a thorough ophthalmological examination, with fluorescein angiography whenever a macular abnormality was suspected. Of family members over the age of 32 years, 46.7% showed signs of PDR. We classified the clinical forms of PDR in this family into four types: minimal lesion, pseudovitelliform type, butterfly-spider type, and late-stage lesion. These forms were predominant in the order cited in age groups 31-40 years, 41-50, 51-60, and > 60 years. Significant visual loss occurred only after the age of 50 years, when 8 of 14 eyes had visual acuity of less than 20/25. Inheritance was autosomal dominant. PDR presented different clinical forms in members of this family, and in successive age classes patterns of increasing severity prevailed. Thus, the different phenotypic forms apparently represent transient stages related to the age of the patient.
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Atypical periodic paralysis and myalgia: A novel RYR1 phenotype. Neurology 2018; 90:e412-e418. [PMID: 29298851 PMCID: PMC5791790 DOI: 10.1212/wnl.0000000000004894] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2017] [Accepted: 10/24/2017] [Indexed: 11/15/2022] Open
Abstract
Objective To characterize the phenotype of patients with symptoms of periodic paralysis (PP) and ryanodine receptor (RYR1) gene mutations. Methods Cases with a possible diagnosis of PP but additional clinicopathologic findings previously associated with RYR1-related disorders were referred for a tertiary neuromuscular clinical assessment in which they underwent detailed clinical evaluation, including neurophysiologic assessment, muscle biopsy, and muscle MRI. Genetic analysis with next-generation sequencing and/or targeted Sanger sequencing was performed. Results Three cases with episodic muscle paralysis or weakness and additional findings compatible with a RYR1-related myopathy were identified. The McManis test, used in the diagnosis of PP, was positive in 2 of 3 cases. Genetic analysis of known PP genes was negative. RYR1 analysis confirmed likely pathogenic variants in all 3 cases. Conclusions RYR1 mutations can cause late-onset atypical PP both with and without associated myopathy. Myalgia and cramps are prominent features. The McManis test may be a useful diagnostic tool to indicate RYR1-associated PP. We propose that clinicopathologic features suggestive of RYR1-related disorders should be sought in genetically undefined PP cases and that RYR1 gene testing be considered in those in whom mutations in SCN4A, CACNA1S, and KCNJ2 have already been excluded.
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P 152 Self-reflection on illusions and mental health in emergency medicine. Clin Neurophysiol 2017. [DOI: 10.1016/j.clinph.2017.06.224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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P 96 Patients’ beliefs and resuscitation statistics – Mere coincidence or a causal link? Clin Neurophysiol 2017. [DOI: 10.1016/j.clinph.2017.06.172] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Distinguishing in-hospital and out-of-hospital status epilepticus: clinical implications from a 10-year cohort study. Eur J Neurol 2017; 24:1156-1165. [DOI: 10.1111/ene.13359] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 06/12/2017] [Indexed: 01/28/2023]
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Lung function in ataluren-treated, non-ambulatory patients with nonsense mutation Duchenne muscular dystrophy from a long-term extension trial versus untreated patients from a natural history study. Neuromuscul Disord 2017. [DOI: 10.1016/s0960-8966(17)30233-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Phase 1 results of PTC596, a novel small molecule targeting cancer stem cells (CSCs) by reducing levels of BMI1 protein. Eur J Cancer 2016. [DOI: 10.1016/s0959-8049(16)33039-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Results of North Star ambulatory assessments in the phase 3 ataluren confirmatory trial in patients with nonsense mutation Duchenne muscular dystrophy (ACT DMD). Neuromuscul Disord 2016. [DOI: 10.1016/j.nmd.2016.06.250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Initial first-in-human phase 1 results of PTC596, a novel small molecule that targets cancer stem cells (CSCs) by reducing BMI1 protein levels. Ann Oncol 2016. [DOI: 10.1093/annonc/mdw368.27] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Severe infantile male encephalopathy is a result of early post-zygotic WDR45 somatic mutation. Clin Genet 2016; 90:560-562. [PMID: 27681470 DOI: 10.1111/cge.12849] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Revised: 08/17/2016] [Accepted: 08/18/2016] [Indexed: 11/29/2022]
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THU0222 The Diagnosis of Familial Mediterranean Fever Following The Initial Presentation of Monoarthritis. Ann Rheum Dis 2016. [DOI: 10.1136/annrheumdis-2016-eular.1095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Sports injuries and illnesses during the 2015 Winter European Youth Olympic Festival. Br J Sports Med 2016; 50:631-6. [DOI: 10.1136/bjsports-2015-095665] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/25/2016] [Indexed: 11/03/2022]
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First drug registry in Duchenne muscular dystrophy (DMD) to assess Translarna (Ataluren) use, safety, and effectiveness in routine clinical practice. Neuromuscul Disord 2015. [DOI: 10.1016/j.nmd.2015.06.268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Are effects of Translarna (Ataluren) on muscle strength more discernible in younger patients with Duchenne muscular dystrophy (DMD)? Neuromuscul Disord 2015. [DOI: 10.1016/j.nmd.2015.06.284] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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G.P.106. Neuromuscul Disord 2014. [DOI: 10.1016/j.nmd.2014.06.120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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94 The effect of Pseudomonas aeruginosa infection on pulmonary function outcome in a cohort of patients with nonsense mutation cystic fibrosis. J Cyst Fibros 2014. [DOI: 10.1016/s1569-1993(14)60230-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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S1 Development of a confirmatory phase 3, multicentre, randomized, double-blind, placebo-controlled study of ataluren in patients with nonsense mutation Duchenne muscular dystrophy. Neuromuscul Disord 2014. [DOI: 10.1016/s0960-8966(14)70095-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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The effect of zoledronic acid on the fracture risk in men with osteoporosis. J Endocrinol Invest 2014; 37:229-32. [PMID: 24474679 DOI: 10.1007/s40618-013-0038-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/16/2013] [Accepted: 12/06/2013] [Indexed: 10/25/2022]
Abstract
BACKGROUND Prospective, placebo-controlled, double-blind, randomized studies on osteoporosis treatment with bisphosphonates in men are rare. This review focuses on a recent trial and compares the results with other studies. METHODS This review provides a summary of recent literature on fracture risk in men following treatment with zoledronic acid. According to a recent clinical study with 1,199 men, zoledronic acid was linked to a lower risk of vertebral fractures. In this manuscript, a re-analysis of the presented statistical data will be demonstrated by performing a Bonferroni-correction to adjust for type 1 error accumulation in multiple statistical tests. RESULTS It will be shown that the provided evidence linking zoledronic acid to a lower fracture risk in male osteoporosis is true, but less pronounced than originally assumed. CONCLUSION Comparative clinical studies are recommended, where the benefits of different bisphosphonates are compared to each other under the same experimental conditions.
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A Novel Study Paradigm for Long-term Prevention Trials in Alzheimer Disease: The Placebo Group Simulation Approach (PGSA): Application to MCI data from the NACC database. J Prev Alzheimers Dis 2014; 1:99-109. [PMID: 25530953 PMCID: PMC4268776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
INTRODUCTION The PGSA (Placebo Group Simulation Approach) aims at avoiding problems of sample representativeness and ethical issues typical of placebo-controlled secondary prevention trials with MCI patients. The PGSA uses mathematical modeling to forecast the distribution of quantified outcomes of MCI patient groups based on their own baseline data established at the outset of clinical trials. These forecasted distributions are then compared with the distribution of actual outcomes observed on candidate treatments, thus substituting for a concomitant placebo group. Here we investigate whether a PGSA algorithm that was developed from the MCI population of ADNI 1*, can reliably simulate the distribution of composite neuropsychological outcomes from a larger, independently selected MCI subject sample. METHODS Data available from the National Alzheimer's Coordinating Center (NACC) were used. We included 1523 patients with single or multiple domain amnestic mild cognitive impairment (aMCI) and at least two follow-ups after baseline. In order to strengthen the analysis and to verify whether there was a drift over time in the neuropsychological outcomes, the NACC subject sample was split into 3 subsamples of similar size. The previously described PGSA algorithm for the trajectory of a composite neuropsychological test battery (NTB) score was adapted to the test battery used in NACC. Nine demographic, clinical, biological and neuropsychological candidate predictors were included in a mixed model; this model and its error terms were used to simulate trajectories of the adapted NTB. RESULTS The distributions of empirically observed and simulated data after 1, 2 and 3 years were very similar, with some over-estimation of decline in all 3 subgroups. The by far most important predictor of the NTB trajectories is the baseline NTB score. Other significant predictors are the MMSE baseline score and the interactions of time with ApoE4 and FAQ (functional abilities). These are essentially the same predictors as determined for the original NTB score. CONCLUSION An algorithm comprising a small number of baseline variables, notably cognitive performance at baseline, forecasts the group trajectory of cognitive decline in subsequent years with high accuracy. The current analysis of 3 independent subgroups of aMCI patients from the NACC database supports the validity of the PGSA longitudinal algorithm for a NTB. Use of the PGSA in long-term secondary AD prevention trials deserves consideration.
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P.2.8 The 6-min walk test and clinical endpoints in Duchenne MD: Reliability, validity, and clinically-important differences. Neuromuscul Disord 2013. [DOI: 10.1016/j.nmd.2013.06.413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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P.2.9 The 6-min walk test and other endpoints in Duchenne MD: Multi center longitudinal natural history observations over 48weeks. Neuromuscul Disord 2013. [DOI: 10.1016/j.nmd.2013.06.414] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Encysted peritoneal hydatidosis in a child — the effectiveness of pre-operative therapy with a combination of praziquantel and albendazole. ANNALS OF TROPICAL MEDICINE AND PARASITOLOGY 2013; 99:577-82. [PMID: 16156971 DOI: 10.1179/136485905x51445] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
A child with encysted peritoneal hydatidosis was found to be completely cured after 3 months of combined therapy with praziquantel and albendazole followed by resection of a huge peritoneal cyst and the removal of numerous, dead, daughter cysts.
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63 The use of high resolution computerized tomography of the chest in evaluating the effect of ataluren in nonsense mutation cystic fibrosis (nmCF) lung disease. J Cyst Fibros 2013. [DOI: 10.1016/s1569-1993(13)60205-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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WS7.5 Interim results of the phase 3 open-label study of ataluren in nonsense mutation cystic fibrosis (nmCF). J Cyst Fibros 2013. [DOI: 10.1016/s1569-1993(13)60044-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Dependance of supraspinal locomotor control on speed and gait pattern - an fMRI study. KLIN NEUROPHYSIOL 2012. [DOI: 10.1055/s-0032-1301684] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Progress and problems in muscle glycogenoses. ACTA MYOLOGICA : MYOPATHIES AND CARDIOMYOPATHIES : OFFICIAL JOURNAL OF THE MEDITERRANEAN SOCIETY OF MYOLOGY 2011; 30:96-102. [PMID: 22106711 PMCID: PMC3235878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In this selective review, we consider a number of unsolved questions regarding the glycogen storage diseases (GSD). Thus, the pathogenesis of Pompe disease (GSD II) is not simply explained by excessive intralysosomal glycogen storage and may relate to a more general dysfunction of autophagy. It is not clear why debrancher deficiency (GSD III) causes fixed myopathy rather than exercise intolerance, unless this is due to the frequent accompanying neuropathy. The infantile neuromuscular presentation of branching enzyme deficiency (GSD IV) is underdiagnosed and is finally getting the attention it deserves. On the other hand, the late-onset variant of GSD IV (adult polyglucosan body disease APBD) is one of several polyglucosan disorders (including Lafora disease) due to different etiologies. We still do not understand the clinical heterogeneity of McArdle disease (GSD V) or the molecular basis of the rare fatal infantile form. Similarly, the multisystemic infantile presentation of phosphofructokinase deficiency (GSD VII) is a conundrum. We observed an interesting association between phosphoglycerate kinase deficiency (GSD IX) and juvenile Parkinsonism, which is probably causal rather than casual. Also unexplained is the frequent and apparently specific association of phosphoglycerate mutase deficiency (GSD X) and tubular aggregates. By paying more attention to problems than to progress, we aimed to look to the future rather than to the past.
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Abstract
OBJECTIVE The therapeutic effects of 4-aminopyridine (4AP) were investigated in a randomized, double-blind, crossover trial in 10 subjects with familial episodic ataxia with nystagmus. METHODS After randomization, placebo or 4AP (5 mg 3 times daily) was administered for 2 3-month-long treatment periods separated by a 1-month-long washout period. The primary outcome measure was the number of ataxia attacks per month; the secondary outcome measures were the attack duration and patient-reported quality of life (Vestibular Disorders Activities of Daily Living Scale [VDADL]). Nonparametric tests and a random-effects model were used for statistical analysis. RESULTS The diagnosis of episodic ataxia type 2 (EA2) was genetically confirmed in 7 subjects. Patients receiving placebo had a median monthly attack frequency of 6.50, whereas patients taking 4AP had a frequency of 1.65 (p = 0.03). Median monthly attack duration decreased from 13.65 hours with placebo to 4.45 hours with 4AP (p = 0.08). The VDADL score decreased from 6.00 to 1.50 (p = 0.02). 4AP was well-tolerated. CONCLUSIONS This controlled trial on EA2 and familial episodic ataxia with nystagmus demonstrated that 4AP decreases attack frequency and improves quality of life. LEVEL OF EVIDENCE This crossover study provides Class II evidence that 4AP decreases attack frequency and improves the patient-reported quality of life in patients with episodic ataxia and related familial ataxias.
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The influence of dual task on gait during galvanic vestibular or visual motion stimulation. KLIN NEUROPHYSIOL 2011. [DOI: 10.1055/s-0031-1272771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Body position and direction of a moving object influence visual motion perception. KLIN NEUROPHYSIOL 2011. [DOI: 10.1055/s-0031-1272768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Head position during resting modifies spontaneous daytime decrease of downbeat nystagmus. Neurology 2011; 75:1928-32. [PMID: 21098408 DOI: 10.1212/wnl.0b013e3181feb22f] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND The intensity of downbeat nystagmus (DBN) decreases during the daytime when the head is in upright position. OBJECTIVE This prospective study investigated whether resting in different head positions (upright, supine, prone) modulates the intensity of DBN after resting. METHODS Eye movements of 9 patients with DBN due to cerebellar (n = 2) or unknown etiology (n = 7) were recorded with video-oculography. Mean slow-phase velocities (SPV) of DBN were determined in the upright position before resting at 9 am and then after 2 hours (11 am) and after 4 hours (1 pm) of resting. Whole-body positions during resting were upright, supine, or prone. The effects of all 3 resting positions were assessed on 3 separate days in each patient. RESULTS Before resting (9 am), the average SPV ranged from 3.05 °/s to 3.6 °/s on the separate days of measurement. After resting in an upright position, the average SPV at 11 am and 1 pm was 0.65 °/sec, which was less (p < 0.05) than after resting in supine (2.1 °/sec) or prone (2.22 °/sec) positions. CONCLUSION DBN measured during the daytime in an upright position becomes minimal after the patient has rested upright. The spontaneous decrease of DBN is less pronounced when patients lie down to rest. This indicates a modulation by otolithic input. We recommend that patients with DBN rest in an upright position during the daytime. CLASSIFICATION OF EVIDENCE This study provides Class II evidence that for patients with DBN 2 hours of rest in the upright position decreases nystagmus more than 2 hours of rest in the supine or prone positions (relative improvement 79% upright, 33% supine, and 38% prone: p < 0.05).
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TMEM70 mutations are a common cause of nuclear encoded ATP synthase assembly defect: further delineation of a new syndrome. J Med Genet 2010; 48:177-82. [DOI: 10.1136/jmg.2010.084608] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Adaptive mechanisms in visual motion processing and a possible link to evolution. KLIN NEUROPHYSIOL 2010. [DOI: 10.1055/s-0030-1250846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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43
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The influence of resting in light or darkness on the spontaneous decrease of downbeat nystagmus. KLIN NEUROPHYSIOL 2010. [DOI: 10.1055/s-0030-1250845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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The influence of positional effects on the spontaneous decrease of downbeat nystagmus in the course of the day. KLIN NEUROPHYSIOL 2010. [DOI: 10.1055/s-0030-1250844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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PO31-FR-07 Novel linear and nonlinear measures of heart rate variability in remitting patients with severe brain injury: a preliminary report. J Neurol Sci 2009. [DOI: 10.1016/s0022-510x(09)71225-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Survival Experience of 195 Patients with Hairy Cell Leukemia Treated in a Multi-Institutional Study with Interferon-Alfa 2B. Leuk Lymphoma 2009; 4:99-102. [DOI: 10.3109/10428199109068051] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Abstract
Nystagmus causes blurred vision due to oscillopsia, as well as impaired balance. Depending on etiology, additional cerebellar and brain stem signs may occur. We present the current pharmacotherapy of the most common forms of central nystagmus: downbeat nystagmus (DBN), upbeat nystagmus (UBN), acquired pendular nystagmus (APN), and congenital nystagmus (CGN). Recommended medical therapies are aminopyridines (4-AP) for DBN and UBN, gabapentin and memantine for CGN and APN, and baclofen for periodic alternating nystagmus (PAN).
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Very-late-onset Friedreich ataxia with disturbing head tremor and without spinal atrophy--a case report. Mov Disord 2008; 23:1058-1059. [PMID: 18361475 DOI: 10.1002/mds.21946] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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