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- W2000955390 abstract "As deferoxamine (DFO) appeared to have certain toxic effects on the sensory pathways in some of our patients on nightly subcutaneous deferoxamine (DFO) for transfusion-dependent anemia, treatment was stopped in all of these patients to obtain a comprehensive baseline assessment of sensory function. Visual evoked potentials (VEPs) were studied in all patients; the 77 described in this report all had normal ophthalmological examinations. Abnormally prolonged VEP lantecies were found in 21%. The patients remained off DFO for 2–6 months, and most of those with abnormal VEPs who were retested showed improvement in their VEPs over this period with the VEPs returning to within normal range in half the cases; two showed no change. Since restarting DFO, VEP latencies in 10 of these patients have increased again beyond normal limits, as have the VEPs in 7 who had previously normal VEPs. Although most of the 77 patients have VEPs that are currently normal and stable while on DFO, a significant sub-group have abnormal VEPs that appear sensitive to the administration of DFO and may reflect a vulnerability to DFO neurotoxicity. These data suggest that the VEPs can detect subclinical toxic effects of DFO on the visual system and should be considered as a monitor for patients receiving chronic DFO therapy. Etant donné que la deferoxamine (DFO) paraît avoir certains effets toxiques sur les voies sensorielles chez certains de nos patients soumis à une injection sous-cutanée de cette substance au cours de la nuit comme traitement d'une anémie justiciable d'une perfusion, le traitement a été arrêté afin d'établir un bilan de base valable de leurs fonctions sensorielles. Les potentiels évoqués visuels (PEV) ont été étudiés chez tous les patients; les 77 faisant l'objet de ce raport avaient tous des examens ophthalmologiques normaux. Les latences des PEV ont été trouvées anormalement élevées chez 21% d'entre eux. Les patients sont restés sans traitement à la DFO pendant 2 à 6 mois et la plupart de ceux présentant des anomalies des PEV qui furent explorés à nouveau ont témoigné d'une amélioration de leurs PEV après cette période, les PEV revenant dans les limites normales pour la moitié d'entre eux; deux ne présentèrent aucune modification. En reprenant la DFO, les latences des PEV de 10 des ces patients se sont à nouveau accrues au-delà des limites de la normale, tout comme d'ailleurs chez les patients qui avaient auparavant des PEV normaux. Bien que la plupart des 77 patients aient conservé des PEV normaux et stables sous DFO, un sous groupe significatif présentait des PEV anormaux qui apparaissaient sensibles à l'administration de DFO et pouvait refléter une sensibilité à la neurotoxicité de la DFO. Ces données suggèrent que les PEV peuvent permettre de détecter des effets toxiques subcliniques de la DFO sur le système visuel et devraient être considérés comme moyen de contrôle des patients recevant un traitement chronique avec de la DFO." @default.
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- W2000955390 date "1987-03-01" @default.
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- W2000955390 title "Subclinical VEP abnormalities in patients on chronic deferoxamine therapy: longitudinal studies" @default.
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- W2000955390 doi "https://doi.org/10.1016/0168-5597(87)90035-9" @default.
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