Stroke, or cerebral infarction, represents the onset of dead tissue in the brain and is one of the leading causes of disability and the second leading cause of death in middle- and high-income countries. Interruption of blood supply (ischemia) and restriction of oxygen supply (hypoxia) are the main culprits of stroke. This is usually due to the formation of a blood clot or an embolism from elsewhere, leading to cerebral infarction. This article will explore how blood pressure affects the brain and the risk factors for stroke.
"It's not just age, blood pressure control is crucial to stroke prevention."
Stroke can be classified according to a number of criteria. According to the Oxford Community Stroke Project classification, four common subcategories include total anterior circulation infarction, partial anterior circulation infarction, lacunar infarction, and posterior circulation infarction. These classifications not only predict the extent of the stroke, but also estimate the brain regions affected and the prognosis.
Symptoms of a stroke are usually acute and develop quickly. Common manifestations include weakness on one side, facial paralysis or numbness, vision problems, speech problems, and balance problems. These symptoms can vary greatly depending on where the stroke occurs.
"The ability to quickly recognize these symptoms often determines the effectiveness of immediate treatment."
The main risk factors for cerebral infarction include hypertension, diabetes, smoking, obesity and dyslipidemia. In addition, uncontrollable factors such as age, family history, race and gender also increase the risk. The American Heart Association advises that controlling these risk factors is key to preventing stroke.
A stroke usually occurs when there is a severe and prolonged interruption in blood supply, leading to the death of brain tissue. These interruptions can occur for a variety of reasons, including thrombosis, embolism, etc. As blood flow decreases, the lack of oxygen supply triggers a cascade of cell death processes.
"Every stroke in the brain may be a turning point in life."
CT and MRI scans are reliable tools for diagnosing cerebral infarction. CT scans can quickly rule out cerebral hemorrhage, while MRI can show brain tissue damage early. Early imaging diagnosis can provide important reference for timely treatment.
In recent years, significant progress has been made in the treatment of cerebral infarction, including the use of thrombolytic drugs (such as rtPA) and mechanical thrombectomy. The development of these technologies has greatly improved patients' survival rate and quality of life.
"Timely intervention can reduce disability by 30%."
Understanding the impact of blood pressure on brain health, especially in the prevention and treatment of stroke, is a major challenge in current medicine. Monitoring and controlling blood pressure not only protects the heart, but is also an important step in maintaining brain health. Has this changed your perspective on managing your health on a daily basis?