How is a brain encephalitis puncture performed?

Written by Tang Bo

Neurology

Updated on September 08, 2024

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The encephalitis you mentioned is considered a central nervous system infection. In this case, a definitive diagnosis requires a lumbar puncture, which you referred to as a puncture. The lumbar puncture requires the patient to be in the lateral recumbent position, then the puncture is performed in the interspaces between L1-L3 or L4-L5 on the back to collect cerebrospinal fluid and conduct tests. This also allows for the examination of pathogens and pressure measurements. After the lumbar puncture, the patient needs to lie flat for six hours with a pillow removed to prevent headaches due to low cranial pressure.

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Written by Zhang Hui

Neurology

59sec

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How is encephalitis transmitted?

The commonly mentioned encephalitis is mainly caused by viral infections. There are many types of viruses that can cause encephalitis, including the more severe herpes simplex virus, varicella-zoster virus, etc. There are also some enteroviruses, like Coxsackie virus, and some adenoviruses. Typically, the transmission of encephalitis can occur via the fecal-oral route, where some enteroviruses enter the digestive tract through this route, then from the cells of the digestive tract to the bloodstream, and from there to the brain. Additionally, some viruses are transmitted through blood contact. For instance, if a patient has blisters that rupture and release a large amount of virus, and another person's blood comes into contact with these fluids, transmission can occur via blood. Generally, encephalitis is primarily transmitted through fecal-oral routes and bloodborne transmission.

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Written by Zhang Hui

Neurology

49sec

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Symptoms of encephalitis vomiting

Patients with encephalitis often experience vomiting, and some even have projectile vomiting. This is mainly because patients with encephalitis experience a significant increase in intracranial pressure, which leads to severe vomiting. Additionally, patients may also have noticeable fever, headaches, and can display swelling of the optic disc. In such cases, it is necessary to promptly administer sufficient antiviral medications to the patient, as well as some medications to dehydrate and reduce intracranial pressure. If necessary, corticosteroids can also be used as an adjunct treatment. With aggressive treatment, some patients do recover well. (Please administer medication under the guidance of a professional physician.)

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Written by Zhang Hui

Neurology

1min 10sec

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What tests are done for pediatric encephalitis?

Some auxiliary examinations are very necessary for pediatric encephalitis, which help in the diagnosis and differential diagnosis of encephalitis. The main tests generally include the following: First, an electroencephalogram (EEG), which is the most commonly used examination. It is safe, non-invasive, and relatively accurate. Children with encephalitis will show light to moderate abnormalities in the EEG. Combined with the patient's history of fever and headache, it has important clinical significance for the diagnosis of encephalitis. The second important examination is cranial magnetic resonance imaging (MRI). If the encephalitis is severe, pathological changes in the cerebrospinal fluid can be seen on MRI. The third very important examination is lumbar puncture. Lumbar puncture can mainly determine the pressure of the cerebrospinal fluid, the color of the cerebrospinal fluid, and analyze the levels of white blood cells, glucose, and chloride in the cerebrospinal fluid. This is crucial for diagnosing encephalitis and excluding other types of encephalitis.

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Written by Zhang Hui

Neurology

53sec

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What tests are conducted for encephalitis?

First, it is generally necessary to conduct an EEG test. This test is very convenient and non-invasive for patients. If significant slow waves are detected, encephalitis cannot be ruled out. Secondly, an MRI of the brain should be performed. If the viral encephalitis is severe, abnormal signals can be observed in areas such as the frontal lobe, temporal lobe, and hippocampus on the MRI, which are of great diagnostic reference value. Thirdly, lumbar puncture is also very important. It allows for a direct observation of the color of the cerebrospinal fluid, to monitor the pressure of the brain fluid, and to test the cerebrospinal fluid for cell count, protein, sugar, and chloride levels. These tests are very important for the diagnosis and differential diagnosis of encephalitis.

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Written by Zhang Hui

Neurology

1min 10sec

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Does encephalitis require hospitalization?

The severity of encephalitis can vary greatly; it is generally caused by viral infection. Among these viruses, Herpes Simplex Virus (HSV) is particularly dangerous. Encephalitis caused by HSV can be very severe, with symptoms including high fever, headache, nausea, vomiting, and other serious manifestations. Some patients may even experience seizures, coma, cognitive decline, and changes in mood and behavior. This type of encephalitis is very severe and definitely requires hospitalization. Typically, hospitalization lasts about 2 to 3 weeks, and proper antiviral treatment is necessary. Additionally, there are other forms of encephalitis caused by different viruses that are relatively milder and may even have a certain degree of self-healing properties. Generally, resting well, drinking plenty of water, and consuming fresh vegetables and fruits can lead to recovery. Therefore, whether hospitalization is necessary for encephalitis depends on the severity of the condition and the assessment of which virus has caused the infection. It cannot be generalized.