Cerebrovascular accident
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Cerebrovascular Accident: Definition, Types, and Risk Factors
A cerebrovascular accident (CVA), commonly known as a stroke, occurs when the blood supply to a part of the brain is interrupted, leading to brain tissue damage. The main causes are blood clots (thrombotic or embolic strokes) or ruptured blood vessels (hemorrhagic strokes) in the brain. Thrombotic strokes are the most common, followed by embolic and hemorrhagic types. Major risk factors include hypertension, diabetes, smoking, dyslipidemia, and alcohol use. These risk factors are increasingly seen in younger individuals, leading to a rise in stroke cases among people under 60 years old Ashwathy2021Boush2023Liu2019.
Changing Terminology: From "Cerebrovascular Accident" to "Stroke"
The term "cerebrovascular accident" is becoming outdated in medical literature because it suggests that strokes are random accidents, rather than preventable and treatable events. Recent reviews show a decline in the use of "CVA" in scientific publications and medical records, with a recommendation for clinicians and researchers to use more precise terms like "stroke" to improve clarity and communication .
Clinical Manifestations and Complications
Strokes can cause a wide range of symptoms, including dizziness, numbness, weakness on one side of the body, and difficulties with speech and understanding language. In addition to these, strokes can also lead to neuro-ophthalmic problems such as decreased visual acuity, visual field loss, ocular motility abnormalities, and visuospatial perception deficits. While some eye movement problems can be corrected surgically, vision and perception deficits are harder to treat, and the effectiveness of interventions like visual restoration therapy remains controversial Boush2023Ghannam2017.
In children, strokes may result from conditions like head trauma, leukemia, or rare vascular diseases such as Moyamoya disease. Complications can include auditory agnosia, where the patient loses the ability to perceive sounds, highlighting the need for long-term rehabilitation and therapy .
Special Populations: Sickle Cell Disease and Postoperative Stroke
Patients with sickle cell disease are at higher risk for both infarctive and hemorrhagic strokes. Risk factors in this group include prior transient ischemic attacks, low hemoglobin, acute chest syndrome, and high blood pressure. Hemorrhagic strokes in these patients have a high short-term mortality rate .
Strokes can also occur as complications after surgery, especially in older patients with pre-existing atherosclerosis, heart disease, or hypertension. These postoperative strokes often happen days after surgery and are more common after emergency procedures .
Advances in Treatment and Prevention
Recent research has focused on identifying new drug targets and developing combination therapies to improve stroke outcomes. Network meta-analyses suggest that certain medication combinations can be significantly more effective in targeting the genes and proteins involved in stroke progression, potentially improving community health and reducing healthcare costs Boush2023Liu2019. Surgical interventions like carotid endarterectomy can help prevent strokes in patients with carotid artery disease, with complication rates comparable to global standards .
The Role of Family Caregivers
Family caregivers play a crucial role in supporting stroke survivors, but often face significant challenges, including lack of knowledge about risk factors, emotional stress, and financial hardship. Many caregivers are unprepared for their roles and may use coping strategies such as prayer, fasting, or alcohol use. The burden of caregiving can lead to broken relationships and job loss, underlining the need for better support and education for caregivers .
Conclusion
Cerebrovascular accidents, or strokes, are a leading cause of disability and death worldwide. They are caused by a combination of modifiable risk factors and underlying health conditions. Advances in drug therapy, surgical interventions, and caregiver support are improving outcomes, but prevention through risk factor management remains key. The shift in terminology from "CVA" to "stroke" reflects a broader understanding that these events are not random accidents, but often preventable and treatable conditions.
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Most relevant research papers on this topic
Stroke Is Not an Accident: An Integrative Review on the Use of the Term Cerebrovascular Accident
The term cerebrovascular accident (CVA) has decreased in use in medical publications over time, but should be avoided as it perpetuates the use of a non-specific, non-diagnostic, and non-scientific term for stroke.
Recommending Drug Combinations using Reinforcement Learning to target Genes/proteins that cause Stroke: A comprehensive Systematic Review and Network Meta-analysis
The recommended medication combination using reinforcement learning is ten times more effective in treating cerebrovascular accidents than the initial combination, improving community health and reducing per-person management costs.
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