Quantitative EEG and cognitive evoked potentials in anemia

• Published in: Neurophysiologie clinique Vol. 38; no. 2; pp. 137 - 143
• Main Authors: Kececi, H, Degirmenci, Y
• Format: Journal Article
• Language: French; English
• Published: Paris Elsevier 01.04.2008
• Subjects: Acoustic Stimulation; Adult; Anemia, Hypochromic - blood; Anemia, Hypochromic - drug therapy; Anemia, Hypochromic - psychology; Biological and medical sciences; Cognition - physiology; Electrodes; Electrodiagnosis. Electric activity recording; Electroencephalography; Electrooculography; Event-Related Potentials, P300 - physiology; Evoked Potentials, Auditory - physiology; Female; Hematocrit; Hemoglobins - metabolism; Humans; Investigative techniques, diagnostic techniques (general aspects); Iron Compounds - therapeutic use; Male; Medical sciences; Middle Aged; Nervous system; Neurology; EEG quantifiée; Analyse spectrale; Monitoring thérapeutique; QEEG; Anemia; P300; Event-related potentials; Anémie; Iron deficiency; Therapeutic monitoring; Potentiels évoqués cognitifs; Carence en fer; Nervous system diseases; Treatment; Evoked potential; Deficiency; Electrophysiology; Hemopathy; Electroencephalography; Iron; Event evoked potential; Spectral analysis
• ISSN: 0987-7053; 1769-7131
• DOI: 10.1016/j.neucli.2008.01.004

Summary Objective The anemic status may alter brain functions and electrogenesis, as reflected by EEG and cognitive EPs (CEPs). This study aims to evaluate CEPs and EEG power spectra in adult patients with iron-deficiency anemia and to determine the effects of appropriate iron therapy on electrodiagnostic findings. Methods Fifty-one patients with iron-deficiency anemia underwent CEP and EEG recording. All patients were re-assessed after three months of oral-iron therapy. Results All patients had recovered from their anemia through the three-month iron therapy. Central N1 amplitude and parietal P2 amplitude was increased. N2 latencies were shortened in frontal and central regions. P3 latencies were shortened in frontal, central and parietal areas and P3 amplitude was increased in the parietal region. Except in the gamma-band, all pretreatment and post-treatment mean-power values were significantly lower at the temporal, parietal and occipital regions. Conclusions This study indicates that in iron-deficiency anemia, appropriate iron therapy can improve brain electrogenesis, as reflected by P300 and EEG power spectra.