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People rarely think of children as being at risk for stroke. But the truth is, strokes can happen to people of all ages, even to babies in the womb. For children especially, strokes can be related to bleeding and clotting disorders. Approximately six to 10 in 100,000 children are affected by stroke. Because the causes and symptoms are so different from adult stroke, treating stroke in children requires specialized training. At Cook Children's, we have developed the Stroke and Thrombosis Program, comprised of a team of specialists whose primary goal is to help children recover from a stroke and/or thrombotic disease, as well as prevent future strokes. Our program offers specialized treatment starting in the emergency room and ongoing care throughout the child's recovery.
A stroke is sudden death of brain cells due to lack of oxygen. It can be caused by blockage of blood flow due to a clot or rupture of an artery that supplies blood in the brain.
When this happens, the cells of the brain in the affected area become damaged. If the flow is interrupted for too long, the cells may die because they don't get the oxygen they need. When this happens, the child is at risk for long-term damage and may even risk losing his or her life.
There are three types of strokes:
Arterial ischemic stroke occurs when the flow of blood going into an area of the brain is interrupted by an occlusion of a blood vessel, usually by a clot. This type of stroke is usually related to:
Hemorrhagic stroke occurs when a blood vessel in the brain leaks or bursts causing flooding of the brain with blood and damaging brain cells. This type of stroke can be caused by:
Cerebral sinus vein thrombosis is a stroke that occurs when a blood clot forms in the brain's venous sinuses (veins drain blood from the brain towards the heart). Rather than preventing blood from flowing into the brain, it blocks blood from flowing out. This may result in increased pressure inside the brain or blood leaking into the brain, resulting in a hemorrhagic or ischemic stroke. This type of stroke can be caused by:
The causes and types of stroke in children are very different from those in adults. For children, common causes are often related to:
While it can be extremely difficult to recognize symptoms of stroke in an adult, it is even more so in children. It is not uncommon for some types of strokes to go unnoticed. The brain is divided into two parts, the left and the right.
The left side of the brain controls the right side of the body as well as speech and language. If your child has experienced a stroke in the left side of his or her brain you may notice difficulty with speaking or reading or weakness on the right side of the body.
The right side of the brain controls the left side of the body. If your child has suffered a stroke on the right side of the brain, the left side of the body will be affected along with perception and motor skills. In this case your child may have difficulty with simple tasks such as buttoning a shirt or may be clumsy due to loss of perception and an inability to judge things like distance.
Recognize stroke with this simple acronym
B - Balance Sudden trouble with walking, dizziness, or loss of balance or coordination
E - Eyes Sudden trouble seeing in one or both eyes
F - Face Suddenly one side of the face drooping- especially with smile
A - Arm Sudden weakness in one arm or leg
S - Speech Sudden trouble speaking or understanding, confusion
T - Time Time to call 911 because time is brain
In addition, children may experience the following symptoms and warning signs:
Children often cannot clearly describe the way they feel. Newborns and infants have no way of expressing their symptoms. If your child has been diagnosed with a disorder, illness or genetic disease or is undergoing certain treatments where stroke could be a possible complication, it is very important to discuss a plan of action with your pediatrician and/or specialist. It is also critical to know these signs and take swift action if you believe your child is having a stroke. It could save his or her life.
Time is crucial. Recognize stroke with this simple acronym:
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Strokes are very serious and cause long-term and life-threatening damage. Because the brain is like a "command center" signaling all the functions of our bodies, a stroke affects other parts of the body.
The American Stroke Association reports that between 20 percent and 40 percent of children die after experiencing a stroke, and of those who survive, 50 percent to 80 percent may have permanent neurological deficits. Some include:
Stroke is diagnosed through several testing techniques. Your doctor will perform a complete physical exam and check for problems with vision, movement, feeling, reflexes, speaking and ability to understand what is being said. The doctor will also listen for an abnormal sound in the carotid arteries in the neck. This sound, called a bruit, is caused by irregular blood flow. Additional tests may include:
Just as the causes for stroke are very different in children than adults, so is treatment. Your child's plan of care will depend on the specific cause of the stroke, as well as other important factors such as age, size and other medical problems. The management of acute stroke in children, teens and young adults includes:
For some children with sickle cell disease, blood transfusions may prevent strokes from occurring or recurring. Your doctor will discuss any risks and help to determine if this course of treatment is the right one for your child.
The stroke and thrombosis team at Cook Children's has an outstanding track record in helping patients to recover and to regain as much of their mental and motor skills as possible. An amazing team with extensive knowledge of disorders and issues that can cause stroke and treating those disorders in the tiniest of patients to young adults provides early prevention of recurrence.
Cook Children's Stroke Program is a proud member of the International Pediatric Stroke Society (IPSS) which is an international network of several large pediatric institutions that are current world leaders in therapy and research in the field of pediatric stroke and thrombosis. Membership in IPSS has allowed Cook Children's to participate in international research trials that offer the opportunity to participate in the most recent advances to treat acute ischemic stroke in children, including the novel use of a "clot busting" medication for children, that helps to reopen the obstructed cerebral artery and offer the best chance for children to have full recovery.
Thrombosis is when a blood clot forms inside a vein, artery or within the heart.
Deep vein thrombosis (DVT) is when a blood clot forms inside one of the deep veins of the body obstructing the drainage of blood from an extremity or an organ into the heart. This is a very serious problem because it will cause congestion and tissue damage, and in certain cases, it can affect the function of an important organ of the body (such as the kidneys, liver, spleen, etc). In addition, if blood clots in the veins break loose and travel through your bloodstream, they may lodge in your lungs blocking blood flow to the lungs from the heart (pulmonary embolism) which can be a fatal complication. Rarely, the loose blood clot will not go to the lungs but go to the brain causing a stroke (condition known as a paradoxical embolism).
Arterial thrombosis is when a blood clot forms inside an artery of the body. It is a rare problem and it usually happens in newborns or in hospitalized patients with multiple medical problems.
Intracardiac thrombosis is when a clot forms inside one of the heart chambers or over the valves of the heart. This is a very rare thrombotic problem and, as arterial thrombosis, it usually happens in hospitalized patients.
Thrombosis can occur from anything that keeps blood from flowing smoothly within the blood vessel. Inflammation, infection, presence of a foreign object within a large blood vessel such as a central catheter, pressure over the blood vessel by surrounding tissue in the case of trauma, “thick blood” (congenital or from medications or underlying disease), will cause turbulent flow or slow flow of blood, that will subsequently provoke clot formation.
Certain factors can increase the risk of blood clots such as:
The symptoms of blood clots are:
The Cook Children's Stroke and Thrombosis Program is involved with a prompt, up to date, safe and efficacious treatment of patients with thrombotic complications. In addition, an evaluation of the potential causes/factors that triggered the thrombotic problem takes place to determine the length of anticoagulation therapy needed and to assess the risk of a second thrombotic event once anticoagulation has been stopped.
Treatments available include:
Cook Children's Stroke and Thrombosis program participates actively in research and investigation for the use of new Anti-thrombotic (blood thinners) therapy for children. In addition, Cook Children's Medical Center is an active member of a national initiative to decrease the number of thrombotic complications in Children's Hospitals.
Cook Children's Stroke and Thrombosis Program co-directors Marcela Torres, M.D., Medical Director, Hematology Program, and Fernando Acosta Jr., M.D., Neurology, talk about the causes of pediatric stroke and the importance of the two specialties collaborating to improve awareness, diagnosis, treatment and risk of recurrence.
Have questions or need to make a referral? We can help. If you would like to speak to one of our staff, please call our offices at 682-885-8050.