Why is EEG performed?
Electroencephalography is most commonly used to diagnose epilepsy and sleep disorders; however, some changes may indicate structural changes in the brain, such as encephalopathy, tumor, stroke, or other focal changes. Electroencephalography also reveals physiological aspects of brain function.
Indications for EEG tests:
- Epilepsy and convulsive syndromes of any kind
- Syncopal state (fainting)
- Internal bleeding and brain tumors
- Traumatic brain injuries cause damage
- Alzheimer's disorder and dementia
- Infections like encephalitis, etc.
- Sleeping disorders
- Stroke
- Metabolic and hormonal conditions that affect brain tissue
- it is safe and painless;
- no contraindications;
- no side effects;
- no age restrictions;
- takes less than 30 minutes;
- high test accuracy;
- not an expensive procedure.
How is EEG performed?
There are several methods for performing the EEG procedure. In general, it is a painless test in which small electrodes (the number of electrodes varies depending on the disease being studied) are applied to the patient's scalp with a washable adhesive or a cap with built-in electrodes to collect electrical signals generated by the brain.
The client is instructed to lie down on a bed or in a recliner chair. After cleaning the patient's scalp, the specialist glues or applies conductive paste to the electrodes.
After the procedure begins, the electrodes on the patient's scalp detect electrical impulses that travel between brain cells. The electrodes are connected to wires that send information about the patient's electrical impulses to the EEG equipment. The equipment records information in the form of lines (waves) representing the patient's brain's electrical patterns.
Following the EEG procedure, the doctor examines the recorded brain activity to look for any abnormal patterns or changes. An EEG can help rule out or confirm the presence of specific neurological disorders, such as traumatic brain injuries, sleep disorders, and so on. It also helps the doctor make an appropriate treatment decision.
- According to the doctor's recommendations, the client should inform the doctor about any daily medications he or she is taking and stop taking any medications that may affect the study's results.
- On the day of the procedure or the night before the study, the client should not wash his or her hair with conditioner or use any hair gels or spray. This allows the sensors (electrodes) to attach more easily to the patient's scalp.
- The client should avoid caffeine-containing foods or drinks for at least 8-12 hours before the test.
- The client should eat well the day before the test because low blood sugar can affect the results.
- Adults should not sleep more than 4-5 hours, and children should sleep 5-7 hours the night before the procedure.
- The patient may be asked to remove any jewelry or metal objects that could interfere with EEG recording.
- The doctor will select the type of EEG test based on the client's requirements.
- The doctor will explain the entire procedure to the client and may instruct the patient to make additional special preparations based on their health status.
- An EEG test's duration, for example, is determined by its type.
- A routine EEG can last 30 to 40 minutes.
- A long-term EEG will take approximately one to two hours.
- To record brain activity over a long period of time, electrodes are placed for an outpatient EEG.
- Sleep EEG can take longer than 6-8 hours (depending on the patient's sleep duration).
The cost of the consultation will cover part of the treatment course.
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