Brainstem auditory and visual evoked potentials in children with protein-energy malnutrition

Durmaz, Şenay Arıkan; Karagöl, Uur; Deda, Gülhıs; Önal, Mehmet Zülküf

doi:10.1046/j.1442-200x.1999.t01-1-01150.x

Cited by 5 publications

(9 citation statements)

References 23 publications

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“…Concerning the interpeak latencies, our findings of kwashiorkorinfantswith III-Vand I-Vlatencies longer than those of children with marasmus are in accordance with the findings of Durmaz et al (1999). Bartel et al (1986) found I-III, III-V and I-V intervals uniformly distributed among the degrees of malnutrition, studying 22 children, also showing differences between the two ears, which was further supported by Odabas et al (2005).…”

Section: Discussionsupporting

confidence: 89%

“…Evidence that malnutrition causes changes in AEP measurements in children has been provided sparsely in the literature (Barnet et al, 1978;Bartel et al, 1986;Durmaz et al, 1999;Odabas et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

“…Studies evaluating electrophysiological parameters have pointed to diverse nervous system compromise of auditory (Durmaz, Karagol, Deda, & Onal, 1999;Vandana & Tandon, 2006), visual (Durmaz et al, 1999;McDonald, Joffe, Barnet, & Flinn, 2007), corticospinal (Karak, Misra, Garg, & Katiyar, 1999), and somatosensory paths (Hesse, Rivera, de Díaz, & Quirk, 1998), as well as inter-hemispheric modulation (Pinto & Guedes, 2008), but no reference to the stimulation effects on evoked potentials in malnourished infants was found in the literature. Thus, the objective of the present study was to determine the effects of malnutrition (kwashiorkor, marasmus and marasmic-kwashiorkor) on AEPs and to establish whether changes could be reversed by nutritional rehabilitation associated with daily and individual sensorymotor and environmental stimulation.…”

mentioning

confidence: 99%

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Effects of Malnutrition and Sensory-Motor Stimulation on Auditory Evoked Potentials

Lima¹,

Funayama²,

Oliveira³

et al. 2016

REBAC

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There is evidence that the auditory evoked potential (AEP) is altered by malnutrition both in laboratory animals and in humans. The objective of the present study was to determine whether changes in the AEP caused by malnutrition could be reversed by nutritional rehabilitation and sensorymotor and environmental stimulation during hospitalization. Six children aged 5-33 months with severe malnutrition (kwashiorkor, marasmus and marasmic-kwashiorkor) were admitted to the Pediatric Ward of a University Hospital. Normal age and sex-matched children from the hospital day-care center were enrolled as a control group. The AEP was tested in an electrically and acoustically isolated room using a Nicolet CA 2000 microcomputer. Clicks of 90; 80; 70 and 60 dBn HL were presented through earphones. The results suggest that malnutrition leads to an increase in wave I latencies in patients with marasmus, and in waves I, III and V in those with kwashiorkor or marasmic-kwashiorkor type at 90 dB HL. At discharge, all but one patient with kwashiorkor showed reduced latencies of waves I, III and V compared to the values on admission. Despite the small sample, these preliminary results pointed out that the process of sensory stimulation used in our study in a properly directed, systematic and individualized manner showed encouraging results in terms of AEP recovery in these children.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 99%

mentioning

confidence: 99%

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Effects of Malnutrition and Sensory-Motor Stimulation on Auditory Evoked Potentials

Lima¹,

Funayama²,

Oliveira³

et al. 2016

REBAC

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“…Also, N2 and P2 of Oz latencies in the moderate and severe malnutrition children were delayed significantly (p<0.05) than the normal children. These results are in line with McDonald et al, 2007;Durmaz et al, 1999and Faldella et al, 1996 who found that children with PEM had obvious delay in visual evoked potentials [36], [39][40] . Significant reduction in nerve conduction velocity may be due to nutritional deficiency affecting myelination of peripheral nerves.…”

Section: Discussionsupporting

confidence: 86%

Estimation of Serum Neurokinin A Level in Correlation to Visual Evoked Potentials and Morphological Brain Changes in Malnourished Children: A Follow-Up Case-Control Study

Hassan¹

2016

jmscr

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“…Besides, literature reports show that PEM causes neurophysiological changes in the visual system (VS) of rats, for example: (1) retinal and lens damages (Bonavolonta, Ferrante, & Rosati, 1989;Bonavolonte, Ferrante, Terracciano, & Vecchione, 1991), (2) deficit in number and size-frequency distribution of the optic nerve fiber (Bedi & Warren, 1983), (3) decrease in the synapsesto-neuron ratio (Bedi & Warren, 1983;Bedi, Massey, & Smart, 1989;Gundappa & Desiraju, 1988) and structure changes in the pyramidal cells of the visual cortex (Díaz-Cintra, Cintra, Ortega, Kemper, & Morgane, 1990). However, only a few studies investigated the effects of PEM in the human sensory development (Dantas, Brandt & Leal, 2005;Durmaz, Karagol, Deda, & Külküf Önal, 1999;McDonald, Joffe, Barnet, & Flinn, 2007;Thordstein et al, 2004). Among them, McDonald and colleagues (2007) conducted an electrophysiological study with flash visual-evoked potentials in infants and found reductions in at least one of the positive and negative components peaks.…”

Section: Introductionmentioning

confidence: 99%

Contrast sensitivity function of sine-wave gratings in children with acute malnutrition.

Santos¹,

Alencar²,

Dias³

2009

Psychology & Neuroscience

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The aim of this study was to determine the contrast sensitivity curves of sine-wave gratings with spatial frequencies of 0.25, 1.0, 2.0 and 8.0 cycles per degree (cpd) of visual angle in 16 female subjects aged 7 to 9 years old, eight well-nourished and eight with acute protein-energy malnutrition (PEM). All participants had normal visual acuity and were free of identifiable ocular illness. Contrast threshold was measured using a temporal two-alternative forced-choice psychophysical method, at a distance of 150 cm of the stimuli, binocularly, with mean luminance of 40.1 cd/m2. We detected a general decline in contrast sensitivity for children with acute malnutrition at all spatial frequencies compared to well-nourished children. The malnourished group needed in average 1.37 times more contrast to detect the stimulus in comparison with the well-nourished one. Differences between the groups were statistically significant at all spatial frequencies (p < .001). These results suggest that acute PEM changes the visual perception for sine-wave gratings

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Brainstem auditory and visual evoked potentials in children with protein-energy malnutrition

Cited by 5 publications

References 23 publications

Effects of Malnutrition and Sensory-Motor Stimulation on Auditory Evoked Potentials

Effects of Malnutrition and Sensory-Motor Stimulation on Auditory Evoked Potentials

Estimation of Serum Neurokinin A Level in Correlation to Visual Evoked Potentials and Morphological Brain Changes in Malnourished Children: A Follow-Up Case-Control Study

Contrast sensitivity function of sine-wave gratings in children with acute malnutrition.

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