Ischemic Stroke: A Personal Analysis

     The most common causes of strokes are thrombosis. This is when a clot forms in one of the arteries, mostly in the carotid in the neck and the vertebral artery. The blood is thick and moves very slowly through the artery. The thrombus will form on the damaged area of the artery wall and will cut off the flow of blood to the brain. The area of the artery that is damaged is cause by arteriosclerosis. This form of

There are two major branches of strokes: those caused by narrowing or blockage of the arteries leading towards the brain, and those caused by blood vessel leaking or rupturing in the brain. Ischemic strokes account for approximately 87% of Stroke cases, which reduces the blood flow to the brain. About half of the Ischemic strokes are caused by clotting in small or large arteries, a smaller portion are caused by

An ischemic stroke is typically caused by a thrombosis, which is a blood clot or an embolism, when the blood clot detaches and infiltrates the blood stream.

A stroke is a type of cardiovascular disease that affects the cerebral arteries, those blood vessels that carry blood to the brain. A stroke occurs when one of those blood vessels in the brain is obstructed or ruptures flooding the brain with blood. Depriving blood and oxygen to the brain results in those immediate cells death, causing the brain not to function properly. Once parts of the brain stop functioning, it can directly affect the areas of the body controlled (1).

A CVA occurs when a part of the brain is damaged or destroyed due to an interruption of blood flow to the area resulting in brain cell death (Martini, Nath & Bartholomew 2015 pp. 496-470).There are two main types of a CVA, Ischaemic stroke and Haemorrhagic stroke (AIHW 2013). The most common cause of stroke is ischaemic, which can be caused by embolism/thrombosis (AIHW 2013). An embolism/thrombosis occurs when there is a clot in an artery or vein, which stops blood flow to the brain (AIHW 2013). A haemorrhagic stroke is when an artery ruptures and bleeds into the surrounding brain tissue (AIHW 2013). This form of stroke occurs when blood pools and forms a clot therefore putting pressure on the area of the brain depriving it of oxygen and nutrients it needs to remain healthy (AIHW 2013).

Stroke also known as cerebrovascular accident (CVA), cerebrovascular insult (CVI), or a brain attack. A brain attack is the loss of brain function by the cause of disturbance in the blood supply to the brain. This disturbance occurs due to either one of two causes which are ischemia (lack of blood flow) or a hemorrhage (high increase of blood flow directly into brain; parenchyma or into the subarachnoid space which surrounds the brain with tissue). Ischemia is a formation by a blood clot that is inside of a blood vessel located in the circulatory system called thrombosis or arterial embolism; which is a rapid interruption in the supply of blood flow to an organ or body part due to a clogged artery blocking the blood flow. Thrombosis is a

Sometimes known as a brain attack, a stroke occurs when blood flow to the brain stops. Brain cells immediately start to die due to the lack of oxygen and nutrients they need to function. There are two types of strokes. The most common type, called ischemic stroke, is caused by a blood clot that blocks a blood vessel in the brain. The other kind of stroke, called hemorrhagic stroke, is caused by a blood vessel that breaks and bleeds into the brain. Stroke is the fourth leading cause of death for Americans ("What You Need to Know About Stroke," 2013). In fact, according to the CDC, more than 795,000 people in the United States have a stroke every year ("Stroke Facts," 2015). A stroke can cause great damage in the brain and lead to mild or severe

Stroke is often related to other genetic diseases or disorders. Stroke occurs by blood flow being interrupted to the brain by either a clot or a bleed on the brain. The brain cells die quickly if blood flow is blocked (Centers of Disease Control and Prevention, 2016a). Ischemic stroke occurs when blood flow is blocked by clots or particles (CDC, 2016a). Hemorrhagic stroke occurs when the brain has a bleed from blood vessels bursting (CDC, 2016a). Stroke can leave individuals with deficits and dependent on others for care. Stroke can cause death.

Ischemic strokes are the most common form of stroke, with around 85% of strokes being of this type. They are caused by the arteries that connect to the brain becoming blocked or narrowed, resulting in ischemia - severely reduced blood flow.

Ischemic Stroke tends to occur when the artery responsible to supply oxygen rich blood to the brain becomes clotted or blocked. Another type of stroke is Hemorrhagic Stroke it occurs when an artery in the brain is rupture causing it to leak. The leaks puts too much pressure on the brains cells ,which damages them. Hemorrhagic stroke is also divided into two categories : Intracerebral hemorrhage, which is the most common type of hemorrhagic stroke , it occur when an artery in the brain bursts , flooding the surrounding tissue with blood. And subarachnoid hemorrhage, which is a lest common type of hemorrhagic stroke, it occurs when there is bleeding in the area between brain and thin tissues that covers it. Last but not least is the Transient Ischemic Attack also known as TIA or sometimes call “mini stroke” . This specific stroke is different from others major types of stroke because it occurs when the blood flow is blocked for only a short period of time (no more than five minutes).

All strokes are caused by an obstruction of blood getting to the brain. The ischemic stroke is caused by a blot clot similar to what happens during a heart attack where blood can’t get through because of plaque buildup that blocks the artery. Hemorrhagic stroke are instead of a blockage a blood vessel bursts and can be caused by a head injury that cause a brain bleed. Transient ischemic strokes are “mini” strokes that happen when there is a blockage but the blood flow is restored after short period of

Tidy’s studies, this type of stroke is caused when an artery in the brain ruptures or leaks blood causing there to be pressure thus damaging the brain cells and causing tissue death.(See Figure 2) Tidy explains that ruptures are caused by conditions such as, hypertension, trauma, blood-thinning medication, or aneurysms (weakness in blood vessels walls). Hemorrhagic strokes are classified as either an intracerebral or a subarachnoid hemorrhagic strokes. An Intracerebral hemorrhagic stroke is the most common. Tidy explains that these are usually caused by leaking blood vessels in the brain. Intracerebral strokes are usually caused by high blood pressure and aging blood vessels. An intracerebral hemorrhagic stroke can also be caused by an

Cerebrovascular disease is “any abnormality of the brain caused by a pathologic process in the blood vessels.” (McCance, 2015) Aneurysms and strokes or cerebrovascular accidents encompass this category. There are three categories of strokes: ischemic (thrombotic or embolic), global hypoperfusion, and intracerebral hemorrhage. Thrombotic strokes are caused by arterial occlusions from blood clots formed in the arteries supplying the brain or in the intracranial vessels (McCance, 2015). The development of blood clots or thrombi in the venous channels of the brain is called cerebral thrombosis. Cerebral thrombosis is mostly ascribed to atherosclerosis and inflammatory disease processes that damage arterial walls. Inadequate cerebral perfusion creates damage in the arterial walls where platelets and fibrin attach to forming a thrombus. “Portions of the clot detach and travel up the vessel to distant sites where occlusion occurs, producing a stroke syndrome.” (McCance, 2015) An embolic stroke occurs when a fragment that breaks from a thrombus outside of the brain occludes a cranial artery, usually the middle cerebral artery.

First I feel that, it is important to understand the clinical manifestation of the different strokes. The Ischemic stroke can cause a wide range of neurologic symptoms depending on the location and the size of the effective area. Patients may present with symptoms, such as, numbness or weakness of the face, arms, legs, more so, one side of the body, changes in moody or behavior, trouble with speaking or understanding speech, visual disturbances, having difficulty in walking, dizziness or loss of balance and sudden server headaches. Hemorrhagic stroke has, also, presents with the same clinical manifestation as a Ischemic stroke, however, most patients complain of server headache.

Hemorrhagic stroke occurs when a blood vessels in the brain leaks or ruptures. Bleeding from the ruptured brain artery can either go into the substance of the brain or into the various spaces surrounding the brain. The two types of hemorrhagic stroke are Intracerebral and Subarachnoid hemorrhagic.