Dynamic EEG is carried by the patient a micro cassette tape recording device, in the patient is in a normal environment, engaged in activities of daily living, long time record the patient all electrical activity in the brain. And the EEG signal is recorded on the tape through a differential preamplifier, and the original recorded EEG image is reproduced by playback. Since its advent in the late 70's, EEG monitoring has been widely used in various fields such as neurology, psychology, psychiatry, and clinical diseases.

Application of dynamic EEG in epilepsy

1. For the epilepsy diagnosis, epilepsy is a paroxysmal syndrome, due to its characteristics was unexpected, sudden and temporary, so held in the EEG change wasn't persistently appears, so routine EEG records often because of the limited time to capture the abnormal wave and dynamic electroencephalogram (EEG) due to the record for a long time, increase the probability of detection of the abnormal wave. Therefore, epilepsy disease detection positive rate is also improved.

2. For differential diagnosis of epilepsy, EEG can be the diagnosis of epilepsy, seizures observed when the potential frequency characteristics and tumor spread, especially to recognize sleep when subclinical epileptiform seizure. In a certain period of time to confirm, the number and duration of the spike wave, the role of quantitative diagnosis.

3. Dynamic EEG also of epilepsy medication guidance has an important role, after a period of treatment of epilepsy patients, whether to need to adjustment of drug, dosage, clinical curative effect, and whether to terminate treatment, through dynamic monitoring of EEG findings, to clinicians provided scientific basis for judgment.

Two, other

Differential diagnosis of diseases, clinical on have some symptoms such as fainting, unexplained: consciousness disorders, hysteria, -- too cerebral insufficiency TIA and cardiac of disease differential diagnosis of cerebral vascular disease, they attack the clinical symptoms and epilepsy is very similar, through EEG monitoring to improve differential diagnosis.

2 sleep research. Dynamic monitoring include daily activity and rest, so detection of sleep onset of EEG and clinical diseases, such as the onset of sleep disorders, obstructive sleep apnea syndrome, juvenile Kleine Levin comprehensive syndrome, fat sleep disease and night terrors, somnambulism, nightmares, insomnia.

Why do pregnant women often cramps

I'm pregnant for 7 months, the recent night to sleep often leg cramps, this is how it happened, why will appear this phenomenon? What am I to do? Ms. Zhang

Hello, Ms. Zhang

You this phenomenon in medicine known as calcium, many pregnant women in sleep at night will leg cramps and laboratory examination can be found low levels of calcium in the blood of these women, if further observation can find leg cramps phenomenon occurred in late pregnancy, why in late pregnancy period will leg cramps?

Originally, in the later stage of pregnancy, fetal bone growth and development need to increase the amount of calcium, pregnant women themselves also need to reserve calcium for future postpartum lactation. So pregnant women total required amount of calcium increase greatly, if less maternal partiality for a particular kind of food or dietary calcium or calcium malabsorption, etc., can lead to reduce the level of serum calcium, increased the excitability of nerves and muscles, prone to muscle sustained contraction, which is the cramps. Cramps are easy to occur in sleep, because the cerebral cortex is in a state of depression during sleep, and the nervous system under the jurisdiction of the cerebral cortex is relatively excited, so it is more likely to occur leg cramps.

In the event of a calf cramp, should immediately massage muscle muscle, or flipping a foot, or local hot compress. However, this is only temporary emergency measures, the key is in peacetime to increase calcium intake. Especially the milk, shrimp, seaweed, kelp, soybeans and soy products, need to pay attention to is because of the concentration of oxalic acid in spinach more, the formation of calcium oxalate and affect calcium absorption in the eat these foods do not eat spinach.

Of course, the best is prevenient, after being pregnant, especially in the later stages of pregnancy, often in outdoor sun, to make the skin of synthetic oxytocin D3, promote calcium absorption and utilization, if frequent cramps times that severe calcium deficiency, it should be oral tablets, such as calcium gluconate and calcium lactate. EEG machine is one of the commonly used in clinical medical equipment, its main role is on patients with brain function for inspection, timely finding in patients with brain lesions and the lesions of pathological study is an important instrument for clinical diagnosis and treatment. EEG machine in the actual clinical application, there will be some common failures, these failures will affect the clinical diagnosis and treatment work. So clear EEG machine working principle, and based on the common fault of elimination method to carry on the analysis, rapid processing of EEG machine fault for to ensure clinical work accurately and effectively has very important significance. In this paper, the following on the Mdeick Faith mea-09-19 model of the EEG machine as an example, its work principle and common troubleshooting.