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Recommended textbook solutionsSocial Psychology10th EditionElliot Aronson, Robin M. Akert, Timothy D. Wilson 525 solutions A Concise Introduction to Logic13th EditionLori Watson, Patrick J. Hurley 1,967 solutions
Myers' Psychology for the AP Course3rd EditionC. Nathan DeWall, David G Myers 955 solutions Psychology: Core Concepts8th EditionPhilip Zimbardo, Robert L. Johnson, Vivian McCann 178 solutions You arrive at the residence of a 33-year-old woman who is experiencing a generalized (tonic-clonic) seizure. She has a small amount of vomitus draining from the side of her mouth. After protecting her from further injury, you should: A. place a bite block in between her teeth, apply high-flow oxygen via a nonrebreathing mask, and consider inserting a nasopharyngeal airway. B. wait for the seizure to stop, manually open her airway, insert an oropharyngeal airway, and assess her oxygen saturation with the pulse oximeter. C. maintain her airway with manual head positioning, suction her airway to remove the vomitus, insert a nasopharyngeal airway, and administer high-flow oxygen. D. restrain her extremities to prevent her from injuring herself, suction her airway to remove the vomitus, and assist her ventilations with a bag-mask device. OverviewWhat is a stroke? A Mayo Clinic expert explainsLearn more from neurologist Robert Brown, M.D.
I'm Dr. Robert Brown, neurologist at Mayo Clinic. In this video, we'll cover the basics of a stroke. What is it, who it happens to, the symptoms, diagnosis, and treatment. Whether you're looking for answers for yourself or someone you love, we're here to give you the best information available. You've likely heard the term stroke before. They affect about 800,000 people in the United States each year. Strokes happen in two ways. In the first, a blocked artery can cut off blood to an area of the brain. And this is known as an ischemic stroke. 85% of strokes are of this type. The second type of stroke happens when a blood vessel can leak or burst. So the blood spills into the brain tissue or surrounding the brain. And this is called a hemorrhagic stroke. Prompt treatment can reduce brain damage and the likelihood of death or disability. So if you or someone you know is experiencing a stroke, you should call 911 and seek emergency medical care right away. Anyone can have a stroke, but some things put you at higher risk. And some things can lower your risk. If you're 55 and older, if you're African-American, if you're a man, or if you have a family history of strokes or heart attacks, your chances of having a stroke are higher. Being overweight, physically inactive, drinking alcohol heavily, recreational drug use. Those who smoke, have high blood pressure or high cholesterol, have poorly controlled diabetes, suffer from obstructive sleep apnea, or have certain forms of heart disease are at greater risk as well. Look for these signs and symptoms if you think you or someone you know is having a stroke: Sudden trouble speaking and understanding what others are saying. Paralysis or numbness of the face, arm or leg on one side of the body. Problems seeing in one or both eyes, trouble walking, and a loss of balance. Now many strokes are not associated with headache, but a sudden and severe headache can sometimes occur with some types of stroke. If you notice any of these, even if they come and go or disappear completely, seek emergency medical attention or call 911. Don't wait to see if symptoms stop, for every minute counts. Once you get to the hospital, your emergency team will review your symptoms and complete a physical exam. They will use several tests to help them figure out what type of stroke you're having and determine the best treatment for the stroke. This could include a CT scan or MRI scan, which are pictures of the brain and arteries, a carotid ultrasound, which is a soundwave test of the carotid arteries which provide blood flow to the front parts of the brain, and blood tests. Once your doctors can determine if you're having an ischemic or hemorrhagic stroke, they'll be able to figure out the best treatment. If you're suffering an ischemic stroke, it's important to restore blood flow to your brain as quickly as possible, providing the oxygen and other nutrients your brain cells need to survive. To do this, doctors may use an intravenous clot buster medicine, dissolving the clot that is obstructing the blood flow or they may perform an emergency endovascular procedure. This involves advancing a tiny plastic tube called a catheter up into the brain arteries, allowing the blockage in the artery to be removed directly. Unlike ischemic strokes, the goal for treating a hemorrhagic stroke is to control the bleeding and reduce pressure in the brain. Doctors may use emergency medicines to lower the blood pressure, prevent blood vessel spasms, encourage clotting and prevent seizures. Or, if the bleeding is severe, surgery may be performed to remove the blood that is in the brain. Every stroke is different, and so every person's road to recovery is different. Management of a stroke often involves a care team with several specialties. This may include a neurologist and a physical medicine and rehabilitation physician, among others. Now, in the end, our goal is to help you recover as much function as possible so that you can live independently. A stroke is a life-changing event that can affect you emotionally as much as it can physically. You may feel helpless, frustrated, or depressed. So look for help and support from friends and family. Accept that recovery will take hard work and most of all time. Strive for a new normal and remember to celebrate your progress. If you'd like to learn even more about strokes, watch our other related videos or visit mayoclinic.org. We wish you all the best. An ischemic stroke occurs when the blood supply to part of the brain is interrupted or reduced, preventing brain tissue from getting oxygen and nutrients. Brain cells begin to die in minutes. A stroke is a medical emergency, and prompt treatment is crucial. Early action can reduce brain damage and other complications. The good news is that many fewer Americans die of stroke now than in the past. Effective treatments can also help prevent disability from stroke. Products & Services
SymptomsIf you or someone you're with may be having a stroke, pay particular attention to the time the symptoms began. Some treatment options are most effective when given soon after a stroke begins. Signs and symptoms of stroke include:
When to see a doctorSeek immediate medical attention if you notice any signs or symptoms of a stroke, even if they seem to come and go or they disappear completely. Think "FAST" and do the following:
Call 911 or your local emergency number right away. Don't wait to see if symptoms stop. Every minute counts. The longer a stroke goes untreated, the greater the potential for brain damage and disability. If you're with someone you suspect is having a stroke, watch the person carefully while waiting for emergency assistance. Sign up for free, and stay up to date on research advancements, health tips and current health topics, like COVID-19, plus expertise on managing health. To provide you with the most relevant and
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opt-out of email communications at any time by clicking on the unsubscribe link in the e-mail. CausesThere are two main causes of stroke: a blocked artery (ischemic stroke) or leaking or bursting of a blood vessel (hemorrhagic stroke). Some people may have only a temporary disruption of blood flow to the brain, known as a transient ischemic attack (TIA), that doesn't cause lasting symptoms. Ischemic strokeThis is the most common type of stroke. It happens when the brain's blood vessels become narrowed or blocked, causing severely reduced blood flow (ischemia). Blocked or narrowed blood vessels are caused by fatty deposits that build up in blood vessels or by blood clots or other debris that travel through the bloodstream, most often from the heart, and lodge in the blood vessels in the brain. Some initial research shows that COVID-19 infection may increase the risk of ischemic stroke, but more study is needed. Hemorrhagic strokeHemorrhagic stroke occurs when a blood vessel in the brain leaks or ruptures. Brain hemorrhages can result from many conditions that affect the blood vessels. Factors related to hemorrhagic stroke include:
A less common cause of bleeding in the brain is the rupture of an irregular tangle of thin-walled blood vessels (arteriovenous malformation). Transient ischemic attack (TIA)A transient ischemic attack (TIA) — sometimes known as a ministroke — is a temporary period of symptoms similar to those in a stroke. A TIA doesn't cause permanent damage. A TIA is caused by a temporary decrease in blood supply to part of the brain, which may last as little as five minutes. Like an ischemic stroke, a TIA occurs when a clot or debris reduces or blocks blood flow to part of the nervous system. Seek emergency care even if you think you've had a TIA because your symptoms got better. It's not possible to tell if you're having a stroke or TIA based only on the symptoms. If you've had a TIA, it means you may have a partially blocked or narrowed artery leading to the brain. Having a TIA increases your risk of having a full-blown stroke later. Risk factorsMany factors can increase the risk of stroke. Potentially treatable stroke risk factors include: Lifestyle risk factors
Medical risk factors
Other factors associated with a higher risk of stroke include:
ComplicationsA stroke can sometimes cause temporary or permanent disabilities, depending on how long the brain lacks blood flow and which part is affected. Complications may include:
PreventionKnowing your stroke risk factors, following your health care provider's recommendations and adopting a healthy lifestyle are the best steps you can take to prevent a stroke. If you've had a stroke or a transient ischemic attack (TIA), these measures might help prevent another stroke. The follow-up care you receive in the hospital and afterward also may play a role. Many stroke prevention strategies are the same as strategies to prevent heart disease. In general, healthy lifestyle recommendations include:
Preventive medicationsIf you've had an ischemic stroke or a TIA, your doctor may recommend medications to help reduce your risk of having another stroke. These include:
Jan. 20, 2022 What is the main cause of ischemic stroke?Ischaemic strokes are the most common type of stroke. They happen when a blood clot blocks the flow of blood and oxygen to the brain. These blood clots typically form in areas where the arteries have been narrowed or blocked over time by fatty deposits known as plaques. This process is known as atherosclerosis.
What best describes an ischemic stroke?An ischemic stroke occurs when a blood vessel that supplies the brain becomes blocked or "clogged" and impairs blood flow to part of the brain. The brain cells and tissues begin to die within minutes from lack of oxygen and nutrients. Ischemic strokes are further divided into 2 groups: Thrombotic strokes.
What are three things that can cause an ischemic stroke?They include: High blood pressure: This is the primary cause of stroke . Diabetes: People with diabetes are four times more likely to have carotid artery disease. Atherosclerosis or carotid artery disease: Having either of these conditions or a family history of these conditions can increase the risk of stroke.
Which of the following are ischemic strokes?There are two main types of ischemic stroke:. Thrombotic strokes. They're caused by a blood clot that forms in an artery that supplies blood to your brain, also called an atherlosclerotic stroke.. Embolic strokes.. |