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Link: posterior dominant rhythm

clinical significance

The presence of a normal reactive posterior dominant rhythm is indicative of a well-functioning brain and automatically rules out all sorts of pathology. In a patient with altered mental status where the differential includes seizures, encephalopathy, or something psychogenic, the presence of a normal reactive PDR is a very strong argument against the first two.

A wealth of EEG information can be found, in addition to the above at http://eegatlas-online.com/index.php/alphabetical-index/posterior-dominant-rhythm-guest.

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