Symptoms of cerebral infarction

Written by Liu Yan Hao
Neurology
Updated on December 31, 2024
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Patients with cerebral infarction may exhibit paralysis of one side of the body and aphasia. If the patient has a brainstem infarction, symptoms may include unclear speech, difficulty swallowing, and coughing while eating. In cases of cerebellar infarction, there may not be symptoms of hemiplegia; the main symptom is usually dizziness. Additionally, large-scale cerebral infarctions can lead to disturbances in consciousness, manifesting as coma. Typically, cerebral infarctions do not affect consciousness unless they are extensive, which may also lead to coma. Moreover, patients with cerebral infarction often experience symptoms while resting quietly, commonly waking up in the morning to find themselves unable to speak or with paralysis on one side of the body, although their consciousness remains clear. These are typical manifestations of cerebral infarction.

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Written by Tang Bo
Neurology
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Cerebral infarction X-ray manifestations

Brain infarction generally does not involve X-rays because X-rays primarily target bone issues, not brain tissue issues. If a brain infarction occurs, a cranial CT or MRI can be performed. In acute cases of sudden onset, a cranial CT is primarily used to exclude cerebral hemorrhage, as brain infarction typically does not show up in the acute phase. However, in cases of extensive brain infarction, changes might also appear on a CT during the acute phase. Additionally, after the acute phase, about 1 day or 24 hours later, brain infarctions generally appear as low-density shadows on a CT. On an MRI, in diffusion imaging, brain infarctions generally appear as high-density, high-signal areas, while they appear as low-signal areas in T1 imaging and high-signal areas in T2 imaging. It is also suggested to perform cranial magnetic resonance angiography to examine the status of the blood vessels.

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Written by Zhang Hui
Neurology
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Causes of Cerebral Infarction

The first reason is due to arteriosclerosis. Under the influence of risk factors such as hypertension, diabetes, and hyperlipidemia, damage occurs to the inner lining of the arteries. A large amount of lipid components are deposited on the arterial walls, eventually forming unstable plaques, leading to the narrowing and even occlusion of the cerebral arteries, thus causing the formation of cerebral thrombosis. The second reason to consider is cardiac causes; if a patient has atrial fibrillation, mural thrombi can form within the heart. These thrombi, once dislodged into the cerebral arteries, can cause cerebral embolism. The third point to note is arterial dissection, which is also a cause of cerebral infarction, and it is relatively common among young people.

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Written by Liu Yan Hao
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Can a cerebral infarction be effectively treated?

Most cases of cerebral infarction can be treated effectively, except for some extensive cerebral infarctions, which may leave varying degrees of sequelae. During the acute phase of treatment for cerebral infarction, medications that promote blood circulation, improve circulation, prevent platelet aggregation, and anti-atherosclerosis drugs are used. If treatment can be administered within three hours of onset, intravenous thrombolysis can be performed, which may lead to a faster recovery if successful. Additionally, medications that eliminate free radicals are used during the acute phase to remove free radicals that damage brain cells. Other treatments involve the use of neurotrophic drugs to support the repair of damaged brain cells. After stabilizing the condition, active rehabilitation exercises are recommended, and most patients can be effectively treated.

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Lacunar Infarct Nursing Issues

Lacunar stroke is caused by the blockage of small blood vessels in our skull due to long-term risk factors such as hypertension, diabetes, or hyperlipidemia, leading to a stroke. Generally, the area of infarction is relatively small, typically less than 1.5 to 2 centimeters. Symptoms may or may not be present. In either case, the symptoms are usually mild and the prognosis is generally good. There are no special strict nursing requirements. If patients are active and can take care of themselves, they do not need special care. Furthermore, it is crucial to focus on secondary prevention, which is to prevent further occurrence of stroke, and to seek further treatment from a neurologist.

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Stroke rehabilitation exercise

In the early stages of a stroke, for bedridden patients, passive limb exercises can be conducted at the bedside. This includes joint loosening exercises and passive flexing of knee and elbow joints to prevent joint contractures. When not exercising, proper limb positioning is needed; sandbags can be placed on the inside of the upper limbs to avoid internal rotation, and the legs should be placed in stiff cloth shoes or T-bar shoes to prevent external rotation. Once the patient enters the recovery phase, they can gradually begin standing and walking exercises, while also receiving treatments such as medications, hyperbaric oxygen therapy, and acupuncture. (The use of medications should be under the guidance of a professional doctor.)