If in the past, what is happening in the brain, even for doctors, remained a secret behind seven seals, today, using safe methods of diagnosis, they can look inside the human skull. One of these diagnostic procedures is called "brain eeg". What does this examination show and to whom is it assigned?
When suspected violations in the work of the central nervous system is assigned to the EEG of the brain. What does an adult test show? Allowing to register the electrical impulses that this organ transmits, it demonstrates a mosaic of its condition, gives an opportunity to see how all its sections work. Although CT and MRI scans have become very popular today, EEG does not lose its relevance. This is an informative and inexpensive way to determine how healthy the brain is. Diagnosis is absolutely safe, so it is suitable even for babies.
What problems in the brain helps to detect the EEG?
Electroencephalogram of the brain is carried out strictly according to indications.
- suspected epilepsy;
- prolonged insomnia;
- sleepwalking, sleep apnea;
- endocrine diseases;
- meningitis and encephalitis;
- pathological processes in the vessels of the neck and head;
- mental disorders.
Thus, without a referral from a doctor, such a procedure is not done. What is the electroencephalogram of the brain for, what does this diagnosis show? It is necessary to:
- to detect and assess the nature and depth of the impaired brain activity;
- determine the location of the pathological focus;
- track the effectiveness of prescribed drugs;
- find areas of the brain where an epilepsy attack begins;
- find out how the brain works in between convulsive seizures;
- establish why fainting, crises, panic attacks occur;
- to assess the bioelectric activity of the brain structures in infants with gross lags in the development and detection of psycho-emotional disorders.
It should be noted that the EEG does not see the injury itself.
Parents of young patients often ask the question, which shows the eeg of the brain in a child. It will help identify all of the above pathologies, find out whether the brain is developing correctly, whether there are prerequisites for epilepsy, and determine the reason for a delay in the mental, physical and mental development of a child, as well as assess the consequences of head injuries.
How to understand what the equipment showed?
Only a highly qualified specialist can evaluate the EEG result. After all, it is issued in the form of broken lines and graphs, which will not say anything to an ordinary person. It is clear that the patient is interested in how well his electroencephalogram of the brain corresponds to the norm, which she showed. Decryption becomes known within 24-48 hours after completion of the procedure.
If you describe it very briefly, the result is evaluated taking into account the alpha rhythm (it appears when the person closed his eyes, but does not sleep), the beta rhythm (found in wakefulness), the delta rhythm (recorded during deep sleep or coma, may indicate neoplasms and brain injuries), theta rhythm (detected in sleep with absolute relaxation).
The following EEG results are considered normal:
- if a person is not sleeping, then alpha and beta rhythms should prevail;
- Both hemispheres should show the same mode of activity;
- there should be no abnormal bursts or slowdowns in brain activity;
- if there are no electrical impulses, then the brain is not working.
Anomalies are very diverse, you should not even try to interpret them yourself. You can never correctly evaluate the brain's eeg. What such testing shows is determined by a neurologist.
Can the procedure give an erroneous result?
There are several factors that can distort the picture of the brain, which will show the EEG. These include:
- physical activity during the survey;
- taking sedative, antiepileptic drugs and tranquilizers;
- fasting a few hours before diagnosis;
- the use of strong tea, coffee, energy;
- narcotic trance or too low body temperature;
- dirty hair, the presence of gels, varnishes and other cosmetics.
How to remove the EEG?
EEG devices are placed in the intensive care wards to monitor the condition of the patient who is in a coma. Small children such a procedure can be carried out at home. If a referral is issued to an adult, then he should report to the clinic or diagnostic center.
No need to worry and be afraid of the EEG procedure! You will not be hurt, and it will not cause any discomfort. When a patient comes for an examination, he is seated in a comfortable chair or placed on a couch. He will be offered to relax, blink his eyes, and then close them. The doctor will put a cap on the head of the patient, on which electrodes will be installed (or special small pads). Electrodes are metallic devices that conduct electric pulses. All this construction is capable of counting the electrical activity of the brain and transmitting data to the monitor.
The procedure consists of several stages. The patient is asked to close and open his eyes, often breathing deeply, using the effect of flashing light. If you need a full examination, then record information about the activities of the brain in a dream, before falling asleep and after waking up. If the EEG will be conducted in a dream, the night preceding the date of the examination should be sleepless. Then the person will be given a sedative medication that will help him fall asleep quickly.
Do I need to prepare for the survey?
Although no special training is required, to obtain a reliable result it does not hurt to adhere to such recommendations:
- 3-4 days before the procedure, stop taking medicines that affect the brain;
- do not consume caffeinated foods before testing;
- a few hours before the EEG a good meal;
- wash your hair, do not use styling products.
How do the procedure for the child?
Electroencephalography of the brain is performed even by infants. So little children (up to 3 years), it is carried out in a dream, which occurs naturally (after feeding). Older children are examined already in the wakefulness period. Since the patients of this category are restless, to limit their physical activity, it is good to give them some kind of toy, book or other object that will take their attention and make them sit quietly.
The head of a child or an adult should be evenly positioned, since even a slight leaning forward can distort the result. Hair should be dismissed (braid braids and dreadlocks), remove hairpins, ribbons and earrings. One of the parents must be near the child.
Electroencephalography - a painless and harmless way to diagnose diseases of the central nervous system. It is indicated for various neurological conditions. If there are no pathologies, she will make sure of this, and if changes are detected on the EEG, the doctor will use it to make an accurate diagnosis and prescribe adequate treatment. As for material costs, this is a low-budget diagnosis. Its cost does not exceed 2 thousand rubles.