Event-related brain potentials in patients with hypothyroidism.

Endocrine Practice : Official Journal of the American College of Endocrinology and the American Association of Clinical Endocrinologists
M OzataM A Gundogan

Abstract

To evaluate the cognitive function of patients with hypothyroidism, based on long-latency auditory event-related potentials (ERPs). We investigated alterations of P300 latency in patients with hypothyroidism before treatment and after restoration of euthyroidism. ERPs were elicited in 14 untreated patients with hypothyroidism (mean age, 26.71 +/- 2.39 years) and in a group of 30 control subjects with comparable mean age, sex distribution, and educational level. ERP recordings were repeated at 1 and 6 months after attainment of euthyroidism. Untreated patients with hypothyroidism had longer P300 and N1 wave latencies in comparison with those in the control subjects (P = 0.003 and P = 0.018, respectively). The mean P300 latencies did not change significantly 1 month after restoration of euthyroidism. At 6 months after attainment of euthyroidism, however, the mean P300 latencies returned to normal values, similar to those in the control subjects. We conclude that P300 latencies are impaired in patients with hypothyroidism, which is indicative of cognitive dysfunction. These alterations, however, may be reversed 6 months after attainment of euthyroidism.

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Citations

Oct 31, 2000·The Annals of Pharmacotherapy·J J SramekN R Cutler
Feb 1, 2015·Journal of Medical Systems·Ayşegül GüvenKürşat Ünlühızarcı

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