3/30/2024 0 Comments Eeg test side effects![]() Early symptoms include fatigue, muscular weakness, and tremor. Several patients survived without permanent neurologic sequels ( 20).Īcute intoxication with lithium salts can be a life-threatening condition. The prognostic meaning of this otherwise ominous sign is less grave with intoxication. Electrocerebral silence signifies the most advanced cases. Preceding or following the development of a burst-suppression pattern, the record may be characterized by bi- or triphasic sharp transients ( Fig. With impending breakdown of vegetative functions, periods of flattening and, eventually, a burst-suppression pattern appears ( 18). With deepening coma, fast frequencies disappear and diffuse delta activity becomes prominent. The separation from alpha coma pattern with hypoxic states has prognostic significance with a much more favorable outlook with intoxications ( 17). Superimposed fast activities after intoxications have also been termed “drug-induced alpha coma” ( 17). However, a so-called spindle coma after head injury and the alpha coma pattern with cerebral hypoxia may look similar. Such an EEG is suggestive of intoxication with depressant drugs of any type. Initial dissolution of the alpha rhythm and appearance of interspersed theta frequencies are followed by predominant slow activities superimposed by 10- to 16-Hz rhythmical activity maximal over the anterior regions. EEG signs in different stages of acute intoxication closely resemble those observed with other CNS depressant substances. ![]()
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