scholarly journals Analysis of Conduction Intervals in Normal Electrophysiological Studies: Establishment of Reference Values the Brazilian Population

Author(s):  
Tiago Luiz Luz Leiria ◽  
Catarine Benta Lopes dos Santos ◽  
Roberto Tofani Sant'anna ◽  
Julia Santana Trombetta ◽  
Gabriela Osterkamp ◽  
...  
2014 ◽  
Vol 42 (2) ◽  
Author(s):  
Edward Araujo Júnior ◽  
Claudio Rodrigues Pires ◽  
Wellington P. Martins ◽  
Luciano Marcondes Machado Nardozza ◽  
Sebastião Marques Zanforlin Filho

Author(s):  
Alberto Borges Peixoto ◽  
Taciana Mara Rodrigues da Cunha Caldas ◽  
Marcelle Flausino Barbosa ◽  
Ludimila dos Anjos Teixeira Romão ◽  
Wellington P. Martins ◽  
...  

2016 ◽  
Vol 59 (4) ◽  
pp. 303 ◽  
Author(s):  
Alberto Borges Peixoto ◽  
Taciana Mara Rodrigues da Cunha Caldas ◽  
Ana Helena Bittencourt Alamy ◽  
Wellington P. Martins ◽  
Rafael Frederico Bruns ◽  
...  

Author(s):  
R. Rufino ◽  
C.H. Costa ◽  
A.J. Lopes ◽  
A.I. Maiworm ◽  
K. Maynard ◽  
...  

2010 ◽  
Vol 54 (5) ◽  
pp. 477-481 ◽  
Author(s):  
Pedro Weslley Rosario

OBJECTIVE: To determine the normal values of serum IGF-1 (Immulite 2000) in a Brazilian adult (21-70 years) population. SUBJECTS AND METHODS: Healthy volunteers were divided into 10 groups according to age (5-year intervals), with 100 subjects (50 men and 50 women) per group. One-hundred participants were selected for repetition of the test after 12 weeks. RESULTS: No difference in IGF-1 values was observed between men and women, but a progressive reduction of serum IGF-1 with age was seen. The reference values provided by the manufacturer of the assay, although discretely higher, were very close to the values found in this study. A second measurement of IGF-1 after 12 weeks revealed a variation < 20% in 99% of subjects. CONCLUSIONS: This study established the reference range for IGF-1 determined with the Immulite 2000 assay for a large number of healthy Brazilian adults stratified according to age, and suggests that variations > 20% in IGF-1 levels within an interval of 12 weeks cannot be attributed to interassay variability.


2011 ◽  
Vol 81 (4) ◽  
pp. 256-263 ◽  
Author(s):  
Christophe Matthys ◽  
Pieter van ‘t Veer ◽  
Lisette de Groot ◽  
Lee Hooper ◽  
Adriënne E.J.M. Cavelaars ◽  
...  

In Europe, micronutrient dietary reference values have been established by (inter)national committees of experts and are used by public health policy decision-makers to monitor and assess the adequacy of diets within population groups. The approaches used to derive dietary reference values (including average requirements) vary considerably across countries, and so far no evidence-based reason has been identified for this variation. Nutrient requirements are traditionally based on the minimum amount of a nutrient needed by an individual to avoid deficiency, and is defined by the body’s physiological needs. Alternatively the requirement can be defined as the intake at which health is optimal, including the prevention of chronic diet-related diseases. Both approaches are confronted with many challenges (e. g., bioavailability, inter and intra-individual variability). EURRECA has derived a transparent approach for the quantitative integration of evidence on Intake-Status-Health associations and/or Factorial approach (including bioavailability) estimates. To facilitate the derivation of dietary reference values, EURopean micronutrient RECommendations Aligned (EURRECA) is developing a process flow chart to guide nutrient requirement-setting bodies through the process of setting dietary reference values, which aims to facilitate the scientific alignment of deriving these values.


Author(s):  
Fabrice B. R. Parmentier ◽  
Pilar Andrés

The presentation of auditory oddball stimuli (novels) among otherwise repeated sounds (standards) triggers a well-identified chain of electrophysiological responses: The detection of acoustic change (mismatch negativity), the involuntary orientation of attention to (P3a) and its reorientation from the novel. Behaviorally, novels reduce performance in an unrelated visual task (novelty distraction). Past studies of the cross-modal capture of attention by acoustic novelty have typically discarded from their analysis the data from the standard trials immediately following a novel, despite some evidence in mono-modal oddball tasks of distraction extending beyond the presentation of deviants/novels (postnovelty distraction). The present study measured novelty and postnovelty distraction and examined the hypothesis that both types of distraction may be underpinned by common frontally-related processes by comparing young and older adults. Our data establish that novels delayed responses not only on the current trial and but also on the subsequent standard trial. Both of these effects increased with age. We argue that both types of distraction relate to the reconfiguration of task-sets and discuss this contention in relation to recent electrophysiological studies.


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