Cerebral vascular accident or a stroke is the destruction of brain substance, resulting from thrombosis, intracranial hemorrhage, or embolism, which causes vascular insufficiency. In addition, it is an area of the brain denied blood and oxygen that is required and damage is done to a part of the cells. The effect of the patient depends upon where the damage occurs and the severity of the stroke.
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
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).
Strokes are caused by pathophysiological changes. The two major mechanisms of stroke consist of ischemia and haemorrhage. Ischemia is when there is no oxygen or not, merely enough oxygen to fuel the tissue level in the body. Haemorrhage in the brain, causing strokes can be due to non-traumatic intracerebral haemorrhage (Shah, MD, n.d.) (see appendix 1). This essay will further discuss the implications of strokes on a cellular, organ and system level. Explain the clinical presentation of the signs and symptoms of strokes and how the condition will be managed by a paramedic.
Often times, doctors will typically call a stroke a “brain attack” because the events that transpire resemble those that occur during a heart attack (Wang and Aamodt, 2010). Blood supplies a constant source of oxygen to the brain. However, a stroke occurs when that blood supply to any given part of the brain is suddenly ceased. If the blood supply to the brain is suddenly interrupted this leads to the deprivation of oxygen and glucose to that area. The brain cells that are prevented from acquiring these substances, especially oxygen, will be quickly killed off. Strokes can be categorized into two classes: Ischemic and hemorrhagic strokes (Lindley, 2008).
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
It is “a sudden loss of function resulting from disruption of the blood supply to a part of a brain” (Hincle & Cheever, 2014). The type of stroke Patient S experienced was assumed to be from hyperlipidemia. An atherosclerotic plaque can form in the large blood vessels in the brain. When the plaque become big enough, it can rupture or a small bit may break off and flow into small arteries, which may block the smaller artery. If the artery is occluded, blood cannot flow to certain parts of the brain and an ischemic stroke can occur. Hypertension is a major risk for strokes as well as atrial fibrillation. These diseases increase the risk of an emboli or plaque
Intracerebral drain stroke is a seeping inside the mind tissue because of the burst of veins, record 10% of all stroke cases. Generally coming about because of hypertension is the primary driver, coagulation figure issue, anticoagulant and thrombolytic treatment, cerebrum tumor, injury, and a burst of an aneurysm. ICH generally happens amid a time of movement, and has a sudden onset that advance with minutes to additional keeping in mind the end goal to create draining inclination figure (7), (Lewis, et al. 2014 and Ignatavicius & Workman, 2015b).
A stroke is a condition which is characterised as loss of brain functioning due to an interruption in the blood flow to the brain (Buzzard, 2013, pg. 5). There are two types of strokes, ischaemic and hemorrhagic strokes (Buzzard, 2013, pg. 6). Ischaemic strokes are the most common type of stroke (Gomes & Wachsman, 2013). This type of stroke occurs due to an insufficient flow of blood to the brain, which is usually caused by an artery blockage (Gomes & Wachsman, 2013). Hemorrhagic strokes are due to hypertension and may be caused by medical problems or blood vessel abnormalities (Gomes & Wachsman, 2013). The strokes severity and location of the brain that is affected determines the impact of the stroke in an individual (Gomes & Wachsman, 2013).(Gomes, 2013)
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
The most catastrophic form of hemorrhagic stroke occurs when a weak, bulging region in a blood vessel wall called an aneurysm ruptures, leading to a subarachnoid hemorrhage (SAH). Intracranial aneurysms are more common in people with polycystic kidney disease; still, the majority of cases are sporadic. People suffering from an SAH complain of the worst headache of their lives and often experience seizures and loss of consciousness. Even with prompt hospitalization and surgical intervention, 30% of SAH victims do not
This will form a gradually enlarging hematoma (blood pool). Intracerebral Haemorrhages can be caused by local vessel abnormalities (hypertension, vasculitis, vascular malformation) or systemic factors (drugs, trauma, tumours and sickle cell anaemia/leukaemia). Haemorrhaging directly damages brain tissue and raises intracranial pressure giving headaches, vomiting nausea and eventually coma and death.
A stroke is a “Brain attack” that can happen to anyone at any time. This attack occurs when the blood flow to an area of the brain is cut off. Many may ask the question what causes a stroke. A stroke is caused when the blood flow to an area of the brain is cut off the brain cells are deprived of oxygen and begin to die. Studies show that a stroke occurs every 40 seconds and in every four minutes someone dies from a stroke. (Association) There are three different types of strokes Ischemic stroke, Hemorrhagic Stroke, and Transient Ischemic stroke, and they can all have a huge impact on your health.
A stroke caused by a blocked artery by a blood clot or bursting of a blood vessel because of uncontrolled high blood pressure. There are main three types of the stroke. An ischemic stroke occurs when a blood clot blocks one of the arteries which supply blood to brain. A clot may be caused by fatty deposits (plaque) that build up in arteries and cause reduced blood flow (atherosclerosis) or other artery conditions. (mayo clinic). About 89%, strokes are ischemic strokes. Ischemic stroke includes thrombotic stroke. A thrombotic stroke occurs when a thrombus stuck in one of the arteries that supply blood to the brain. A clot build-up of fatty deposits in arteries. Another type of stroke is called the hemorrhagic stroke. This stroke occurs when a blood vessel leaks or ruptures in the brain. A bold vessel leaks or ruptures from many conditions like uncontrolled high blood pressure or overtreatment with anticoagulants and the weak spot in blood vessel walls. (mayo). Some people experience a mini-stroke it is known as a transient ischemic attack (TIA). A temporary decrease or clot stuck in a vessel in our brain causes TIA. It happens less than five minutes. This stroke does not have any symptom, because the blockage is