What are the typical EEG findings associated with encephalopathy?
Hepatic encephalopathy is encountered in patients with liver failure or insufficiency from any cause. The EEG changes in the beginning commonly include slowing of the posterior dominant rhythm, followed by a gradual slowing of the background with the appearance of theta and delta activity.
Can you see encephalopathy on EEG?
Most importantly, EEG can differentiate between a true acute encephalopathy and epileptic states or psychiatric conditions. Although EEG is very sensitive in detecting an acute encephalopathy, it is not usually etiologically specific. The usefulness of EEG in chronic encephalopathy is less clear.
Can an EEG detect hypoxic brain injury?
Electroencephalography (EEG) is used to prognosticate recovery in comatose patients with hypoxic ischemic brain injury (HIBI) secondary to cardiac arrest.
What do spikes mean on an EEG?
Spikes or sharp waves are terms commonly seen in EEG reports. If these happen only once in a while or at certain times of day, they may not mean anything. If they happen frequently or are found in specific areas of the brain, it could mean there is potentially an area of seizure activity nearby.
What is mild encephalopathy?
Encephalopathy is a term that refers to brain disease, damage, or malfunction. Encephalopathy can present a very broad spectrum of symptoms that range from mild, such as some memory loss or subtle personality changes, to severe, such as dementia, seizures, coma, or death.
What does anoxic brain injury look like on EEG?
Hypoxia causes diffuse slowing on the electroencephalogram (EEG). The acute and prolonged anoxia of cardiac arrest exhibits no changes initially. In 7-10 seconds, slow waves appear. This is followed by rhythmic, high-voltage delta activity; subsequently, attenuation and EEG flattening occurs.
When does hypoxic ischemic encephalopathy occur?
Hypoxic ischemic encephalopathy (HIE) is a type of brain dysfunction that occurs when the brain doesn’t receive enough oxygen or blood flow for a period of time. Hypoxic means not enough oxygen; ischemic means not enough blood flow; and encephalopathy means brain disorder.
What do spikes on EEG mean?