- Ischemic stroke - the most common cause of death
Ischemic stroke - a disease that has been known since ancient times as apoplectic stroke. This name came up once Hippocrates, and only in the 19th century, it was found that the cause apoplectic stroke is cerebrovascular accident.
Causes of ischemic stroke
Ischemic stroke - an acute ischemic attack due to insufficient income (or complete cessation of receipt) of arterial blood to the brain tissue.
The cause of ischemic stroke may be thrombi (blood clots, plugging the lumen of the vessel), embolism (broken away thrombi are formed in other parts of the circulatory system, often in the region of the heart valves), atherosclerotic plaques, sharp spasm of blood vessels, a sharp drop or rise in blood pressure, and etc.
The risk of ischemic stroke increased by atherosclerosis and coronary heart disease, hypertension, cardiac arrhythmias, sudden drop in blood pressure, osteochondrosis of the cervical spine, accompanied by compression of the blood vessels that carry blood to the brain.
When brain cells (neurons) do not receive oxygen and nutrients, they begin to die out, a zone of necrosis with loss of functions inherent in this portion of the brain. Depending on where it is a site necrosis, this may be a violation of movement (paralysis or paresis), sensitivity, speech, senses (vision, hearing, and so on).
Zone necrosis usually surrounded by injured neurons, which in the first hours and days and lose their function, but then, when properly administered adequate treatment of their function restored. Completely lost only the functions directly in the area of necrosis.
Symptoms of ischemic stroke
Area of necrosis in most intensively growing the first 1, 5-2 hours after the onset of stroke. It grows less rapidly over the next 4-5 hours. The threat of the necrotic zone is important for the first three days. Therefore, it is important to promptly hospitalization in a specialized intensive care unit, where everything will be done to stop the spread of stroke.
Depending on the size of the area affected and the brain functions in this area all the symptoms of a stroke are divided into cerebral and focal.
Mild manifestations of the disease are the main focal symptoms that occur immediately or gradually. When moderate to severe form of ischemic stroke, cerebral symptoms first appear, and then, on their background - patchy. Sometimes the development of ischemic stroke is preceded by bouts of transient ischemic attacks, accompanied by focal disorders that are fast enough.
By focal brain lesions are symptoms that are the consequence of a local (limited) nervous system. This movement disorders in the form of paralysis (complete immobilization) or paresis (partial immobilization). The most characteristic of ischemic stroke is hemiparesis - a violation of the movements in the left or right half of the body. Depending on the location of the affected area may occur unilateral visual impairment and hearing loss, skin sensitivity disorders, speech and other symptoms.
By the cerebral symptoms are those that develop with diffuse (spread) brain damage. These symptoms include headache, dizziness
Dizziness - if the ground is slipping from under his feet
, Cramps, nausea, vomiting, loss of consciousness, hallucinations.
Complications after ischemic stroke in most cases connected with cerebral disorders. When violations of breath may develop pneumonia, blood circulation - edema, including edema of the lungs and brain. There are also complications associated with focal disorders. So, may develop on the background of paralysis and paresis persistent contractures (information) relevant muscles.
Effects of ischemic stroke
Easy ischemic stroke, promptly and adequately treated, may not have any effect. But in most cases, the effects do occur. Usually they are the greater, the larger the area of necrosis in the brain and its surrounding area of injured neurons.
The consequences of stroke can manifest in persistent violation of movement, speech, sensitivity, vision, hearing, and so on.
Typically, during the full scope of rehabilitation treatment these effects of stroke
Stroke - consequences: recovery and treatment
significantly reduced by restoring the functions of injured neurons.
Pregnancy after ischemic stroke
Ischemic stroke in women of childbearing age is rare and most often develops in the hereditary predisposition. Risk factors for this are hypertension, seizures, sudden decrease in blood pressure, migraines
I have a migraine. What to do?
, Heart rhythm abnormalities, various diseases of the heart valves (eg, rheumatism), smoking, obesity, diabetes
Diabetes - threatening and incurable disease
Ischemic stroke occurs during pregnancy (usually during the third trimester), as well as after birth. This is facilitated by late toxicosis (gestosis), cardiovascular disease, age after age 40, a caesarean section.
If a woman of childbearing age suffered ischemic stroke, examined it carefully in order to identify genetic predisposition to thromboembolism (such as antiphospholipid syndrome - APS). Prevention of repeated ischemic stroke - is carrying out the treatment and possible elimination of the factors predisposing to stroke. After treatment, the woman can bear a child again. Repeated strokes in these women is rare.