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Understanding Youth Athlete Motivation, Training, and Activity Progression During and After the COVID-19 Sports Interruption. Int J Sports Phys Ther 2022; 17:1396-1403. [PMID: 36518827 PMCID: PMC9718718 DOI: 10.26603/001c.40372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 09/11/2022] [Indexed: 11/12/2023] Open
Abstract
Background COVID-19 restrictions created a period of disrupted sports participation for youth athletes. The physical conditioning, sports training habits, and patterns of sports activity resumption upon returning to normal sports activity are currently unknown. Purpose/Hypothesis This study aimed to determine the extent to which youth athletes maintained their training levels during the early stages of the COVID-19 pandemic and understand the strategies that enhanced motivation and adherence to a training regimen while in isolation. A secondary aim was to analyze how youth athletes returned to activity and identify injuries associated with prolonged sports interruption. Study Design Observational / Survey Study. Methods A survey designed to determine activity changes, type of organized instruction, and athlete preferences for training support were distributed by email using snowball sampling methodology to athletes 14-21 years old who were involved in competitive sports when pandemic restrictions were enacted. As sports activities resumed, a follow-up survey was distributed to the same respondents to identify feelings of preparedness, training habits, and injuries. Results Of the155 subjects (mean age 16.1 ± 2 years, 64.5% female) that completed the initial survey, 98% reported a stoppage of in-person sports participation and 70% decreased their exercise/training volume, with 41% (n=63) reporting > 50% reduction. Most athletes (86%) received instruction from coaches, with written workouts (70%) being most common; however, most athletes (70%) preferred instructor-led, group training sessions. Of the 43 subjects that completed the follow-up survey (34% response rate), there was an increase in athletic exposures compared to mid-pandemic levels, and 25% reported sustaining a sports-related injury shortly after resuming sports activities. Conclusions Pandemic-related sports restrictions resulted in a significant reduction in youth athlete training and conditioning. Coaches attempted to maintain training via the use of written workouts; however, athletes preferred instructor-led, group training sessions. There was a rapid resumption of sports activities, which may have contributed to the high rate of injuries in this study. Level of Evidence 3.
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Retrospective Cohort Study of Rates of Return Emergency Department Visits Among Patients Transported Home by Ambulance. J Emerg Med 2020; 59:147-152. [PMID: 32561107 DOI: 10.1016/j.jemermed.2020.04.043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2019] [Revised: 04/09/2020] [Accepted: 04/14/2020] [Indexed: 11/17/2022]
Abstract
BACKGROUND Emergency Medical Services (EMS) is an important resource that interacts with our most vulnerable patients during transport home after hospital discharge. EMS providers may be appropriately situated to support the transition of care to the home environment. OBJECTIVES This study aimed to determine whether patients transported home by ambulance experience higher rates of return emergency department (ED) visits and readmission compared with similar patients transported home by other means. METHODS This was a retrospective cohort study conducted at a U.S. tertiary care academic hospital. Patients aged 65 years and over transported home via ambulance after hospital discharge between January and March 2012 were included. Rates of 72-h and 30-day ED revisits and 30-day hospital readmissions were calculated. Odds ratios were calculated and revisit rates between groups were compared. RESULTS There were 207 patients aged 65 and over transported home by ambulance. Matched controls were found for 162 patients. Compared with the matched controls, the exposed group experienced a statistically significant higher rate of 30-day ED returns (18.519% vs. 10.494%; odds ratio [OR] 1.939; p = 0.043). The exposed group also experienced a higher rate of 72-h ED returns (2.469% vs. 0.617%; OR 4.076) and 30-day readmissions (12.346% vs. 6.173%; OR 2.141), though results did not reach statistical significance. CONCLUSION The study findings suggest that transport home via ambulance after hospital discharge could be predictive of a high risk of recidivism independent of established readmission risk factors. Programs that expand the role of EMS to include post-transport interventions may warrant further exploration.
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Superconductivity at 250 K in lanthanum hydride under high pressures. Nature 2019; 569:528-531. [PMID: 31118520 DOI: 10.1038/s41586-019-1201-8] [Citation(s) in RCA: 280] [Impact Index Per Article: 56.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 04/04/2019] [Indexed: 11/09/2022]
Abstract
With the discovery1 of superconductivity at 203 kelvin in H3S, attention returned to conventional superconductors with properties that can be described by the Bardeen-Cooper-Schrieffer and the Migdal-Eliashberg theories. Although these theories predict the possibility of room-temperature superconductivity in metals that have certain favourable properties-such as lattice vibrations at high frequencies-they are not sufficient to guide the design or predict the properties of new superconducting materials. First-principles calculations based on density functional theory have enabled such predictions, and have suggested a new family of superconducting hydrides that possess a clathrate-like structure in which the host atom (calcium, yttrium, lanthanum) is at the centre of a cage formed by hydrogen atoms2-4. For LaH10 and YH10, the onset of superconductivity is predicted to occur at critical temperatures between 240 and 320 kelvin at megabar pressures3-6. Here we report superconductivity with a critical temperature of around 250 kelvin within the [Formula: see text] structure of LaH10 at a pressure of about 170 gigapascals. This is, to our knowledge, the highest critical temperature that has been confirmed so far in a superconducting material. Superconductivity was evidenced by the observation of zero resistance, an isotope effect, and a decrease in critical temperature under an external magnetic field, which suggested an upper critical magnetic field of about 136 tesla at zero temperature. The increase of around 50 kelvin compared with the previous highest critical temperature1 is an encouraging step towards the goal of achieving room-temperature superconductivity in the near future.
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Ice-VII inclusions in diamonds: Evidence for aqueous fluid in Earth’s deep mantle. Science 2018; 359:1136-1139. [DOI: 10.1126/science.aao3030] [Citation(s) in RCA: 128] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 01/19/2018] [Indexed: 11/02/2022]
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31: The hydrodissection technique in bilateral ovarian cystectomy for dermoid cysts. Am J Obstet Gynecol 2016. [DOI: 10.1016/j.ajog.2016.01.145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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6
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Pressure-induced structural and related electronic transitions in CaFe 2O 4and Fe 2O 3. Acta Crystallogr A 2012. [DOI: 10.1107/s0108767312098091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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126 Fundamental Cell Regulation by ADAR1 Enzyme is Lost in Metastasis by MicroRNAs to Promote Malignancy. Eur J Cancer 2012. [DOI: 10.1016/s0959-8049(12)70826-2] [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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Structural and related electronic transitions in GaFeO 3under high pressure. Acta Crystallogr A 2011. [DOI: 10.1107/s0108767311087344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Single Port Laparoscopic Surgery. J Minim Invasive Gynecol 2010. [DOI: 10.1016/j.jmig.2010.08.033] [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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10
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Structural studies of γ-Fe 2SiO 4ringwoodite and its high-pressure polymorph. Acta Crystallogr A 2010. [DOI: 10.1107/s0108767310099034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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449 Inhibition of vascular-like network formation of highly aggressive melanoma. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71250-7] [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] Open
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537 The role of microRNA molecules in the regulation of aggressive features in melanoma. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71338-0] [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] Open
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375 The role of A to I RNA editing enzymes in melanoma. EJC Suppl 2010. [DOI: 10.1016/s1359-6349(10)71176-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Portable laser-heating system for diamond anvil cells. JOURNAL OF SYNCHROTRON RADIATION 2009; 16:737-741. [PMID: 19844007 DOI: 10.1107/s0909049509039065] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/09/2009] [Accepted: 09/25/2009] [Indexed: 05/28/2023]
Abstract
The diamond anvil cell (DAC) technique coupled with laser heating has become the most successful method for studying materials in the multimegabar pressure range at high temperatures. However, so far all DAC laser-heating systems have been stationary: they are linked either to certain equipment or to a beamline. Here, a portable laser-heating system for DACs has been developed which can be moved between various analytical facilities, including transfer from in-house to a synchrotron or between synchrotron beamlines. Application of the system is demonstrated in an example of nuclear inelastic scattering measurements of ferropericlase (Mg(0.88)Fe(0.12))O and h.c.p.-Fe(0.9)Ni(0.1) alloy, and X-ray absorption near-edge spectroscopy of (Mg(0.85)Fe(0.15))SiO(3) majorite at high pressures and temperatures. Our results indicate that sound velocities of h.c.p.-Fe(0.9)Ni(0.1) at pressures up to 50 GPa and high temperatures do not follow a linear relation with density.
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Pressure-induced insulator-to-metal transition in TbBaCo_{2}O_{5.48}. PHYSICAL REVIEW LETTERS 2009; 103:125501. [PMID: 19792444 DOI: 10.1103/physrevlett.103.125501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/04/2009] [Indexed: 05/28/2023]
Abstract
TbBaCo_{2}O_{5.48} has been studied by high-pressure synchrotron x-ray diffraction together with resistivity measurements as a function of temperature and pressure. It was found that under pressure a structural phase transition takes place corroborating with a sluggish insulator-to-metal transition. An onset of the metallic state was deduced from a gradual drop of resistivity at the range 3-10 GPa culminating into the change in sign of dR/dT, from negative to positive, at P >or= 10 GPa; at the same pressure range there is a change of lattice strain components calculated from the unit cell dimensions. The changes in structural and transport properties are very similar to those found on heating at ambient pressure implying a common mechanism.
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Abstract
Purpose To examine the factors affecting drug clearance and the available evidence for drug dosing based on the Cockcroft-Gault (CG) equation and the abbreviated Modification of Diet in Renal Disease (abbrMDRD) equation. Factors that would distort the accuracy of these formulas and the affect of this distortion on the use of either formula in drug dosage adjustment were reviewed. Methods An updated review of the literature was performed that pertained to the accuracy of the CG and abbrMDRD equations and their use in drug dosage adjustment. MEDLINE was searched using the OVIDSP database, from the inception of the database (1950) through June 2008. Discussion To cover the major issues concerning the use of renal estimation equations in drug dosing adjustment, various areas were examined. Topics included the accuracy of the CG and abbrMDRD formulas, variability in these equations because of patient and laboratory factors, the isotope dilution-mass spectrometry standardization initiative, and the applicability of each formula to modifying medication doses. Conclusion Although the abbrMDRD equation has many advantages as compared with the CG equation, too little research has been completed at this time to recommend the clinical use of the abbrMDRD equation in pharmacy practice.
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Abstract
BACKGROUND AND PURPOSE Stroke can lead to cerebrogenic cardiac arrhythmias. We sought to investigate the effect of ischemic stroke on cardiac function in a mouse model of permanent middle cerebral artery occlusion (pMCAO). METHODS Twenty-four hours after the induction of focal ischemia, cardiac function was measured in mice by endovascular catheterization of the heart. Immediately after hemodynamic measurements, mice were euthanized and brains were excised and sectioned to measure infarct volume and the severity of insular cortex injury. Myocardial damage was evaluated by hematoxylin-eosin staining. Serum and heart levels of norepinephrine (NE) were also determined. RESULTS Cardiac dysfunction occurred in 9 out of 14 mice that underwent left pMCAO. In these 9 mice, the severity of left insular cortex lesion was greater than the mice with normal heart function. The serum and heart levels of NE were significantly higher in left pMCAO mice with heart dysfunction. Liner regression analysis indicates significant inverse correlation between the severity of left insular cortex damage and heart dysfunction. Mice that underwent right pMCAO did not exhibit cardiac dysfunction. CONCLUSIONS This study shows that left focal cerebral ischemia can produce cardiac dysfunction, which is associated with the extent of left insular cortex damage. Furthermore, mice exhibiting cardiac dysfunction had elevated levels of NE in the serum and heart.
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Distinct clinical characteristics of tuberous sclerosis complex patients with no mutation identified. Ann Hum Genet 2008; 73:141-6. [PMID: 19133941 DOI: 10.1111/j.1469-1809.2008.00496.x] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Tuberous Sclerosis Complex (TSC) is a multi-system disorder that is highly variable in its clinical presentation. Current molecular diagnostic methods permit identification of mutations in either TSC1 or TSC2 in 75-85% of TSC patients. Here we examine the clinical characteristics of those TSC patients who have no mutation identified (NMI). A retrospective review of our patient population that had comprehensive testing for mutations in TSC1/TSC2 identified 23/157 (15%) that were NMI. NMI patients had a lower incidence of brain findings on imaging studies, neurological features, and renal findings than those with TSC2 mutations. In contrast, NMI patients had a lower incidence of seizures than TSC patients with TSC1 mutations, but had a higher incidence of both renal angiomyolipomas and pulmonary lymphangioleiomyomatosis. This distinct constellation of findings suggest that NMI patients may have a unique molecular pathogenesis, different from that seen in TSC patients with the usual mutations in TSC1 and TSC2. We suggest that the mechanisms of disease in these patients include both mosaicism for a TSC2 mutation, and unusual non-coding region mutations in TSC2.
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Differential neuroprotective effects of carnosine, anserine, and N-acetyl carnosine against permanent focal ischemia. J Neurosci Res 2008; 86:2984-91. [PMID: 18543335 PMCID: PMC2805719 DOI: 10.1002/jnr.21744] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Carnosine (beta-alanyl-L-histidine) has been shown to exhibit neuroprotection in rodent models of cerebral ischemia. In the present study, we further characterized the effects of carnosine treatment in a mouse model of permanent focal cerebral ischemia and compared them with its related peptides anserine and N-acetylated carnosine. We also evaluated the efficacy of bestatin, a carnosinase inhibitor, in ameliorating ischemic brain damage. Permanent focal cerebral ischemia was induced by occlusion of the middle cerebral artery (pMCAO). Mice were subsequently randomly assigned to receive an intraperitoneal injection of vehicle (0.9% saline), carnosine, N-acetyl carnosine, anserine, bestatin alone, or bestatin with carnosine. Infarct size was examined using 2,3,5-triphenyltetrazolium chloride staining 1, 3, and 7 days following pMCAO, and neurological function was evaluated using an 18-point-based scale. Brain levels of carnosine were measured in treated mice using high-performance liquid chromatography 1 day following pMCAO. We demonstrated that treatment with carnosine, but not its analogues, was able to significantly reduce infarct volume and improve neurological function compared with those in vehicle-treated mice. These beneficial effects were maintained for 7 days post-pMCAO. In contrast, compared with the vehicle-treated group, bestatin-treated mice displayed an increase in the severity of ischemic lesion, which was prevented by the addition of carnosine. These new data further characterize the neuroprotective effects of carnosine and suggest that carnosine may be an attractive candidate for testing as a stroke therapy.
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Abstract
BACKGROUND AND OBJECTIVE The relationship between diabetes and periodontal diseases is well established. Our aim in this study was to explore the diabetes-related parameters that are associated with accelerated periodontal destruction in diabetic youth. MATERIAL AND METHODS Three-hundred and fifty 6-18-year-old children with diabetes received a periodontal examination. Data on important diabetes-related variables were collected. Analyses were performed using logistic regression, with gingival/periodontal disease as the dependent variable, for the whole cohort and separately for two subgroups (6-11 and 12-18 years of age). RESULTS Regression analyses, adjusting for age, gender, ethnicity, frequency of prior dental visits, dental plaque, and dental examiner, revealed a strong positive association between mean hemoglobin A1c over the 2 years prior to inclusion in the study and periodontitis (odds ratio = 1.31, p = 0.030). This association approached significance in the younger subgroup (odds ratio = 1.56, p = 0.052, n = 183). There was no significant relationship between diabetes duration or body mass index-for-age and measures of gingival/periodontal disease in this cohort. CONCLUSION These findings suggest that accelerated periodontal destruction in young people with diabetes is related to the level of metabolic control. Good metabolic control may be important in addressing periodontal complications in young patients with diabetes, similarly to what is well established for other systemic complications of this disease.
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High-speed, ultra-high-resolution optical coherence tomography of acute macular neuroretinopathy. Br J Ophthalmol 2007; 91:119-20. [PMID: 17179129 PMCID: PMC1857581 DOI: 10.1136/bjo.2006.098871] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Energy transfer from adenosine 5'-triphosphate to europium and interaction between europium and adenosine 5'-triphosphate and adenosine 5'-monophosphate at room temoperature. ACTA ACUST UNITED AC 2002. [DOI: 10.1021/j100564a002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
Choanal atresia is a well-known entity with various surgical approaches. The introduction of nasal endoscopic surgery made the endoscopic approach the most popular one because of excellent visualization and a good view of the choana to remove enough vomerian septal bone. Seven patients with choanal atresia were treated with 9 endoscopic procedures. Some practical operative details are described that can minimize the chance for restenosis.
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How did it get there? A coiled metal foreign body in an unusual cervical position. Otolaryngol Head Neck Surg 2001; 124:590-1. [PMID: 11337673 DOI: 10.1067/mhn.2001.115091] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Differences in psychological and physical health among layoff survivors: the effect of layoff contact. J Occup Health Psychol 2001. [PMID: 11199253 DOI: 10.1037//1076-8998.6.1.15] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study examined health and well-being among workers who have experienced varying types of contact with layoffs in an organization undergoing downsizing. Using survey data from a large organization employing both white- and blue-collar workers (N = 2,279), the authors argued that there are important differences among surviving workers as a function of their layoff experiences. Having any kind of personal contact with layoffs is found to be associated with less job security, more symptoms of poor health, depression, and eating changes as compared with having no layoff contact. Being laid off and rehired is associated with more work-related injuries and illnesses and missed work days due to such events than is receiving a "warn" notice, indirect contact (i.e., friends or coworkers laid off), or no contact with layoffs. Job security partially mediates the relationship between type of layoff contact experiences and health.
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The relationships between alcohol problems and well-being, work attitudes, and performance: are they monotonic? JOURNAL OF SUBSTANCE ABUSE 2001; 11:183-204. [PMID: 10989778 DOI: 10.1016/s0899-3289(00)00020-1] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
PURPOSE Investigators who have examined the relationship between work characteristics and off-the-job alcohol consumption or problems have typically assumed a linear or monotonic relationship (e.g., as work pressures increase, so do alcohol consumption and problems). In the present study, we examine this monotonicity assumption by investigating the nature of the relationships between alcohol problems and multiple demographic, work attitude, well-being, and work performance variables. METHOD Survey data and data from company records were collected from a large sample of blue- and white-collar employees (N = 2,279). Participation was voluntary, confidential, and compensated with a $20 payment. RESULTS Evidence for several different types of statistical relationships between alcohol problems and other variables were found through both analyses of variance (ANOVA) and covariance (ANCOVA). There were several variables that were linearly related to alcohol problems. There was also some support for a "threshold" effect where only the most problematic drinkers (2.6% of sample) showed declines on job attitude and general well-being indices. In some cases, those who drank but report no alcohol problems showed significantly more positive job and life attitudes than either those who abstained or those who had relatively more alcohol problems. IMPLICATIONS We conclude that strict linearly based relationships might not necessarily explain the work-to-drink relationship most effectively.
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Differences in psychological and physical health among layoff survivors: the effect of layoff contact. J Occup Health Psychol 2001; 6:15-25. [PMID: 11199253 DOI: 10.1037/1076-8998.6.1.15] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study examined health and well-being among workers who have experienced varying types of contact with layoffs in an organization undergoing downsizing. Using survey data from a large organization employing both white- and blue-collar workers (N = 2,279), the authors argued that there are important differences among surviving workers as a function of their layoff experiences. Having any kind of personal contact with layoffs is found to be associated with less job security, more symptoms of poor health, depression, and eating changes as compared with having no layoff contact. Being laid off and rehired is associated with more work-related injuries and illnesses and missed work days due to such events than is receiving a "warn" notice, indirect contact (i.e., friends or coworkers laid off), or no contact with layoffs. Job security partially mediates the relationship between type of layoff contact experiences and health.
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The prognostic value of the tumour marker Cyfra 21-1 in carcinoma of head and neck and its role in early detection of recurrent disease. Br J Cancer 2000; 83:1696-701. [PMID: 11104568 PMCID: PMC2363457 DOI: 10.1054/bjoc.2000.1502] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
This study examines a new tumour marker, Cyfra 21-1, as a prognostic marker in predicting the survival of H&N cancer patients, and its correlation with clinical outcome during prolonged follow up of these patients. The study included 67 patients with primary detection of carcinoma of H&N. The survival of these patients was evaluated in correlation with the disease stage and Cyfra 21-1 levels at initial diagnosis. 38 patients were followed clinically and with serial assays for at least 12 months, or until recurrence was diagnosed. Cyfra 21-1 levels were determined periodically, using an Elisa kit. Patients with Cyfra 21-1 < 1.5 ng ml(-1)had a higher survival rate compared to patients with Cyfra 21-1 > or = 1.5 ng ml(-1)(63% vs. 20%, respectively). The risk ratio of Ln(Cyfra 21-1) is 1.62 (P = 0.028). In a Cox regression model that included the disease stage and Ln(Cyfra 21-1), Ln(Cyfra 21-1) was preferred as the main parameter for predicting patients survival. In 83% of the 12 patients with recurrent or residual disease, Cyfra 21-1 was elevated before or during clinical detection of the recurrence. Cyfra 21-1 was found to be a prognostic marker for carcinoma of H&N, unrelated to the stage of the disease. Elevated levels of Cyfra 21-1 without clinical evidence of disease can be attributed to the marker's mean lead-time as compared to the clinical appearance of the disease.
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MESH Headings
- Aged
- Anti-Bacterial Agents/therapeutic use
- Antineoplastic Combined Chemotherapy Protocols/therapeutic use
- Biopsy
- Bone Marrow Examination
- Cellulitis/drug therapy
- Cellulitis/etiology
- Enterococcus faecalis
- Escherichia coli Infections/drug therapy
- Escherichia coli Infections/etiology
- Fatal Outcome
- Gram-Positive Bacterial Infections/drug therapy
- Gram-Positive Bacterial Infections/etiology
- Head and Neck Neoplasms/blood
- Head and Neck Neoplasms/complications
- Head and Neck Neoplasms/drug therapy
- Head and Neck Neoplasms/pathology
- Humans
- Leukemia, Lymphocytic, Chronic, B-Cell/blood
- Leukemia, Lymphocytic, Chronic, B-Cell/complications
- Leukemia, Lymphocytic, Chronic, B-Cell/drug therapy
- Leukemia, Lymphocytic, Chronic, B-Cell/pathology
- Leukemic Infiltration
- Leukocyte Count
- Male
- Neoplasm Recurrence, Local/blood
- Neoplasm Recurrence, Local/drug therapy
- Neoplasm Recurrence, Local/pathology
- Platelet Count
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Abstract
OBJECTIVE To investigate outpatient outcome measures of a multi-center, state-wide, universal newborn hearing screening project. DESIGN Eight hospitals participated in a 3-yr, funded project. Each hospital designed its own protocol using common criteria for judging whether an infant passed a hearing screening. Infants were tested in the hospital, and those either failing the in-hospital screening or who were not tested in the hospital (missed) were asked to return 4 to 6 wk after hospital discharge for outpatient rescreening. Those infants failing the outpatient rescreening were referred for diagnostic auditory brain stem response testing. Each hospital used its own audiological equipment and criteria to determine whether a particular infant had a hearing loss. All data were collected and analyzed for individual hospitals, as well as totaled across all hospitals. Data were analyzed in terms of year of program operation, nursery type, and geographic region. RESULTS Seventy-two percent of infants who failed the in-hospital screening returned for outpatient testing. The percentage of in-hospital fails returning for retesting was significantly higher than the percentage of in-hospital misses returning for retesting. The percentage of infants returning for retesting increased with successive years of program operation. Some differences were noted in the percentage of infants returning for retesting among hospitals and geographic regions of the state. Some differences in outpatient outcome measures also were noted between infants originally born into the neonatal intensive care unit (NICU) and the well-baby nursery (WBN). The percentage of infants from the NICU who returned for retesting was slightly higher than that for infants from the WBN. The percentage of infants from the WBN passing the outpatient rescreening was higher than that for the NICU infants. The overall prevalence of hearing loss was 1.96/1000, with that in the NICU being 8/1000 and that in the WBN being 0.9/1000. Positive predictive value for permanent hearing loss based on inpatient screening was approximately 4% and based on outpatient rescreening was approximately 22%. CONCLUSIONS Several outpatient outcome measures changed with successive years of program operation, suggesting that programs improve over time. Also, some outpatient outcome measures differ between NICU and WBN populations. The differences noted across regions of the state in the percentage of infants returning for outpatient retesting require further research to determine whether differences are due to demographic and/or procedural differences.
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New York State universal newborn hearing screening demonstration project: effects of screening protocol on inpatient outcome measures. Ear Hear 2000; 21:131-40. [PMID: 10777020 DOI: 10.1097/00003446-200004000-00007] [Citation(s) in RCA: 42] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
OBJECTIVE To examine differences among various test protocols on the fail rate at hospital discharge for infants in the well-baby nursery (WBN) and neonatal intensive care unit (NICU) who received hearing screening through a universal newborn hearing screening demonstration project. DESIGN The outcomes of several screening protocols were examined. Two technologies were used: transient evoked otoacoustic emissions (TEOAEs) alone or in combination with the auditory brain stem response (ABR). The performance of test protocols in both nurseries within eight hospitals was examined over a 2- to 3-yr period. In the WBN, six hospitals used a screening protocol of TEOAE technology first followed by an ABR (automated or conventional) technology screening for newborns who referred on TEOAE screening. Two hospitals used TEOAE only in the WBN. Seven hospitals used screening protocols in the NICU that used a combination of TEOAE and ABR technologies (TEOAE technology administered first or second, before or after TEOAE, or TEOAE and ABR tests on all infants). Only one hospital used TEOAE technology exclusively for hearing screening. RESULTS Significant differences among screening protocols were found across hospitals in the first, second, and third years of the program. The combination of TEOAE technology and ABR technology (a two-technology screening protocol) resulted in a significantly lower fail rate at hospital discharge than the use of a single-technology (TEOAE). Fail rates at discharge were twice as high using the one-technology protocol versus two-technology protocol, even when the best outcomes from program year 3 were considered exclusively. Results of two-technology versus one-technology protocols were similar in the NICU. Use of a second technology for screening TEOAE fails significantly reduced every hospital that used the protocol's fail rate at discharge. CONCLUSIONS A two-technology screening protocol resulted in significantly lower fail rates at hospital discharge in both the WBN and NICU nurseries than use of a single-technology (TEOAE) hearing screening protocol.
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The New York State universal newborn hearing screening demonstration project: ages of hearing loss identification, hearing aid fitting, and enrollment in early intervention. Ear Hear 2000; 21:118-30. [PMID: 10777019 DOI: 10.1097/00003446-200004000-00006] [Citation(s) in RCA: 108] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To determine the ages of hearing loss identification, hearing aid fitting, and enrollment in early intervention through a multi-center, state-wide universal newborn hearing screening project. DESIGN Universal newborn hearing screening was conducted at eight hospitals across New York State. All infants who did not bilaterally pass hearing screening before discharge were recalled for outpatient retesting. Inpatient screening and outpatient rescreening were done with transient evoked otoacoustic emissions and/or auditory brain stem response testing. Diagnostic testing was performed with age appropriate tests, auditory brain stem response and/or visual reinforcement audiometry. Infants diagnosed with permanent hearing loss were considered for hearing aids and early intervention. Ages of hearing loss identification, hearing aid fitting, and enrollment in early intervention were investigated regarding nursery type, risk status, unilateral versus bilateral hearing loss, loss type, loss severity, and state regions. RESULTS The prevalence of infants diagnosed with permanent hearing loss was 2.0/1000 (85 of 43,311). Of the 85 infants with hearing loss, 61% were from neonatal intensive care units (NICUs) and 67% were at risk for hearing loss. Of the 36 infants fitted with hearing aids, 58% were from NICUs and 78% were at risk for hearing loss. The median age at identification and enrollment in early intervention was 3 mo. Median age at hearing aid fitting was 7.5 mo. Median ages at identification were less for infants from the well-baby nurseries (WBNs) than for the NICU infants and for infants with severe/profound than for infants with mild/moderate hearing loss, but were similar for not-at-risk and at-risk infants. Median ages at hearing aid fitting were less for well babies than for NICU infants, for not-at-risk infants than for at-risk infants, and for infants with severe/ profound hearing loss than for infants with mild/ moderate hearing loss. However, median ages at early intervention enrollment were similar for nursery types, risk status, and severity of hearing loss. CONCLUSIONS Early ages of hearing loss identification, hearing aid fitting, and enrollment in early intervention can be achieved for infants from NICUs and WBNs and for infants at risk and not at risk for hearing loss in a large multi-center universal newborn hearing screening program.
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Abstract
OBJECTIVE To evaluate the feasibility of universal newborn hearing screening by examining inpatient outcome measures from 8 hospitals located in geographically diverse areas of New York State over a 3-yr period. DESIGN Funding was provided by the New York State Department of Health to implement predischarge hearing screening programs in the neonatal intensive care units (NICUs) and well-baby nurseries (WBNs) of eight hospitals. Various screening protocols including transient evoked otoacoustic emissions alone or in combination with conventional auditory brain stem response or screening auditory brain stem response were implemented by each site. Measured outcomes included rate of misses, refusals, and fails. Results were analyzed as a function of year of operation, nursery type, and geographic location. RESULTS Six out of eight hospitals successfully implemented universal hearing screening during the first year, and the remaining 2 hospitals implemented programs during the second year of the project. Over a period of 3 yr, 69,761 newborns were screened at the eight hospitals representing 96.9% of all live births. The overall fail rate (4.04%) combined with the miss rate (2.61%) resulted in 6.63% of infants referred for outpatient follow-up. Mean data indicated that inpatient outcome measures improved with year of operation, with most individual hospitals also showing improvements. Both fail and miss rates were higher in the NICU than in the WBN and for hospitals located in New York City than in other regions of the state. CONCLUSIONS Inpatient outcome measures of a universal newborn hearing screening project, which involved multiple centers across geographically diverse regions of New York State, were acceptable in terms of successfully screening a high percentage of live births and attaining low refer rates for outpatient screening. This study adds to the growing body of literature supporting the feasibility of screening all newborns before hospital discharge.
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Abstract
Acute mastoiditis in children remains an otological problem. Although the widespread use of antibiotics has reduced the need for surgical intervention, surgery is frequently used in the treatment of acute mastoiditis and its complications. The charts of 44 patients hospitalized with signs of acute mastoiditis were reviewed. In 43.2 per cent of all patients, acute mastoiditis was the presenting sign of acute middle-ear infection. Post-auricular erythema and protrusion of the auricle were the most frequent signs at presentation. All four signs (post-auricular erythema, oedema, tenderness, and protrusion of the auricle) were present in 40.9 per cent of patients. No bacterial pathogen was isolated in 45.5 per cent of ear cultures. Complicated acute mastoiditis was diagnosed in 13.7 per cent of the patients. Eighty-seven per cent of patients responded well to intravenous antibiotics and myringotomy, and in 11.4 per cent mastoidectomy or abscess drainage were performed. We conclude that nearly all patients with uncomplicated mastoiditis recover following intravenous antibiotics and myringotomy. Mastoidectomy should be performed in selected cases, such as cases of complicated acute mastoiditis.
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Work stress and self-reported alcohol use: the moderating role of escapist reasons for drinking. J Occup Health Psychol 1999. [PMID: 10100111 DOI: 10.1037//1076-8998.4.1.29] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study examines the moderating role of escapist reasons for drinking alcohol in the job stress/self-reported alcohol use and problems relationship. It was hypothesized that higher levels of job stress would be associated with higher levels of self-reported drinking (H1) and drinking problems (H2) only for those who endorsed escapist reasons for drinking. For those who did not hold such beliefs, higher levels of job stress were predicted to be associated with lower self-reported alcohol intake (H3) and problems (H4). Survey data from white- and blue-collar workers employed across all paycodes and positions were collected randomly at a large manufacturing organization (62% response rate). Participants responded to questions concerning work stress, reasons for drinking, alcohol intake, and alcohol problems. Using only nonabstainers with complete data (N = 1,645), results from regression analyses generally supported all hypotheses.
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Work stress and self-reported alcohol use: the moderating role of escapist reasons for drinking. J Occup Health Psychol 1999; 4:29-36. [PMID: 10100111 DOI: 10.1037/1076-8998.4.1.29] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
This study examines the moderating role of escapist reasons for drinking alcohol in the job stress/self-reported alcohol use and problems relationship. It was hypothesized that higher levels of job stress would be associated with higher levels of self-reported drinking (H1) and drinking problems (H2) only for those who endorsed escapist reasons for drinking. For those who did not hold such beliefs, higher levels of job stress were predicted to be associated with lower self-reported alcohol intake (H3) and problems (H4). Survey data from white- and blue-collar workers employed across all paycodes and positions were collected randomly at a large manufacturing organization (62% response rate). Participants responded to questions concerning work stress, reasons for drinking, alcohol intake, and alcohol problems. Using only nonabstainers with complete data (N = 1,645), results from regression analyses generally supported all hypotheses.
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Multicenter trial validation of a camera-based method to measure Tc-99m mercaptoacetyltriglycine, or Tc-99m MAG3, clearance. Radiology 1997; 204:47-54. [PMID: 9205222 DOI: 10.1148/radiology.204.1.9205222] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
PURPOSE To evaluate an improved camera-based method for calculating the clearance of technetium-99m mercaptoacetyltriglycine (MAG3) in a multicenter trial. MATERIALS AND METHODS Tc-99m MAG3 scintigraphy was performed in 49 patients at three sites in the United States and Canada. The percentage of the injected dose of Tc-99m MAG3 in the kidney at 1-2, 1.0-2.5, and 2-3 minutes after injection was correlated with the plasma-based Tc-99m MAG3 clearances. The data were combined with the results obtained in 20 additional patients in a previously published pilot study. RESULTS Regression models correlating the plasma-based Tc-99m MAG3 clearance with the percentage uptake in the kidney for each time interval were developed; there was no statistically significant difference among sites in the regression equations. Correction for body surface area statistically significantly (P < .005) improved the correlation coefficient for each time interval. For the 1.0-2.5-minute interval, the body surface area-corrected correlation coefficient for the four combined sites was .87, and it improved to .93 when one outlier was omitted from the analysis. Similar results were obtained with the other time intervals. Independent processing by two observers showed no clinically important differences in the percentage dose in the kidney or in relative function. CONCLUSION An improved camera-based method to calculate the clearance of Tc-99m MAG3 was validated in a multicenter trial.
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Abstract
Cell iron status was assessed in terms of its capacity to mediate cell injury by pro-oxidants. Cultured K562 cells, which maintain a stable cytosolic labile iron pool (LIP) of < 0.5 microM, underwent distinct changes after short exposures to transferrin (Tf) followed by t-butyl hydroperoxide (TBHP): (a) rise in LIP, detectable fluorimetrically; (b) increased lipid peroxidation and (c) eventual cell death. All of these effects were inhibited by weak bases or iron chelators. Similarly, hydrogen peroxide caused rises in both LIP and oxidant species detectable with 2',7'-dichlorofluorescin diacetate, which were enhanced by preincubation with Tf. The Tf-delivered iron disappeared from LIP and the TBHP-reactive pool with a t1/2 < 30 min. The results indicate that the catalytic potential of iron is highest while in transit between endosomes and cytosolic ligands.
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Cyclosporine-induced worsening of hepatic dysfunction in a patient with Crohn's disease and enterocutaneous fistula. South Med J 1995; 88:843-4. [PMID: 7631211 DOI: 10.1097/00007611-199508000-00010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Cyclosporine recently has become part of the treatment regimen for patients with refractory inflammatory bowel disease, though it is still considered investigational for that purpose. However, little attention has been given to the potential hepatotoxicity associated with cyclosporine administration. This can be especially significant in patients with preexisting abnormalities of liver function, including those induced by total parenteral nutrition.
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[Flexible bronchoscopy in the diagnosis of foreign body aspiration]. HAREFUAH 1995; 128:536-7, 600, 599. [PMID: 7797150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Foreign body aspiration (FBA) should be suspected in every child with acute onset of cough or wheezing. Although a choking episode occurs in 80-90% of cases of FBA, it is not necessarily diagnostic. Furthermore, in many cases neither physical examination nor chest x-ray, including fluoroscopy, are diagnostic; their results may be completely normal in up to 17-25% of cases of FBA. Bronchoscopy is therefore mandatory when there is a convincing history of FBA, regardless of physical or radiologic findings. This can be done with either the flexible or rigid bronchoscope, or with both.
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Cyfra 21-1. A new potential tumor marker for squamous cell carcinoma of head and neck. ARCHIVES OF OTOLARYNGOLOGY--HEAD & NECK SURGERY 1995; 121:177-81. [PMID: 7530966 DOI: 10.1001/archotol.1995.01890020039009] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
OBJECTIVE Evaluation of Cyfra 21-1 (cytokeratin fraction 21-1) in squamous cell carcinoma of the head and neck. DESIGN Prospective study. PATIENTS Serum Cyfra 21-1 concentration was measured in 250 samples from patients with squamous cell carcinoma of head and neck, patients with benign tumors of head and neck, healthy control subjects, and patients in remission from squamous cell carcinoma of head and neck. RESULTS Cyfra 21-1 concentration was elevated in 60% of the new patients with squamous cell carcinoma but only in 8% of patients with benign tumors and 3.5% of the healthy controls. At a cutoff of 1.3 ng/mL, the sensitivity of the test was 60%, the specificity was 94%, positive predictive value was 75%, and negative predictive value was 89%. The marker levels tended to follow the clinical course of the disease and were useful for therapy monitoring. Cyfra 21-1 levels were in good correlation with the tumor stage expressed by the local (T) and the lymphatic spread (N) and were inversely correlated with histologic grade, eg, higher in poorly differentiated carcinoma than in well-differentiated squamous cell carcinoma. CONCLUSION Cyfra 21-1 evaluation in head and neck squamous cell carcinoma is worthwhile for performance of an ample study that will prove and establish its routine use.
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Interventional neurology: botulinum toxin as a potent symptomatic treatment in neurology. ISRAEL JOURNAL OF MEDICAL SCIENCES 1994; 30:816-9. [PMID: 7982770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Local injections of botulinum toxin is a well-accepted treatment for focal dystonias, hemifacial spasms and strabismus. Its use by skilled neurologists has been reported to be safe and effective. We report our experience with botulinum toxin injections in 108 patients with various central nervous system disorders. Botox was effective in upper face dystonia (86% improvement), spastic dysphonia (92% improvement), platysma muscle spasms and spasmodic torticollis (range of movement 61%, pain and tension 90%). It was also very effective in a few patients with apraxia of eyelid opening, parkinsonian jaw tremor, teeth clenching, palatal myoclonus and adductor leg spasticity. No serious side effects were recorded. Botulinum toxin is a useful symptomatic treatment for many neurological disorders, and one of the leading mode of treatments in the new subspecialty in neurology called "Interventional neurology."
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[Botulinum toxin for palatal myoclonus and spastic dysphonia]. HAREFUAH 1993; 125:402-4, 448. [PMID: 8112664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Botulinum toxin (B; Botox), produced by the anaerobic bacterium Clostridium botulinum, causes temporary paralysis by blocking the presynaptic release of acetylcholine at the neuromuscular junction. This action is clinically used to alleviate muscle spasm by injecting the toxin directly into the overactive muscle. We report our experience with B injections in 2 women, aged 20 and 21, respectively, 1 of whom had bilateral palatal myoclonus and the other adductor spastic dysphonia. Both showed remarkable improvement of conditions for which, until now, we had no effective treatment. These are the first cases in Israel treated with B for otorhinolaryngological conditions.
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Ciliary ultrastructure in primary ciliary dyskinesia and other chronic respiratory conditions: the relevance of microtubular abnormalities. Ultrastruct Pathol 1992; 16:547-53. [PMID: 1440977 DOI: 10.3109/01913129209061546] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Twenty-eight subjects with chronic respiratory disease were investigated for clinical data, ciliary beat frequency of nasal mucosa (10 cases), and ciliary ultrastructure. The cases were divided into two groups: those considered compatible with primary ciliary dyskinesia (genetic), and those not fitting into this category (others). A case was defined as genetic if one or more of the following were present: dextrocardia, ciliary beat frequency less than 10 Hz, or an average dynein arm count (outer, inner, or both) of less than two per ciliary cross-section. In each of the genetic cases at least two of these parameters were present. The percentage of malformed microtubules was calculated from the total number of evaluated cross-sections for each case. Ciliary microtubular abnormalities of any kind were no more frequent in cases of primary ciliary dyskinesia than in other cases. The same was true for transposition and radial spoke defects.
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Abstract
Herpes zoster oticus produces facial paralysis with a low recovery rate. Acyclovir, a specific virostatic drug, was given intravenously in five herpes zoster oticus patients, and in three of them was followed by oral therapy. In follow-ups of 1 to 24 months, one patient had grade I recovery, three patients grade II, and one grade III. These good results encourage the use of acyclovir in herpes zoster oticus patients.
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