What is the acronym for a temporary impairment of cerebral circulation that causes symptoms lasting minutes to hours but results in no permanent neurological changes?
TIA
CVA
TPN
MI
The Correct Answer is A
A. TIA stands for Transient Ischemic Attack, which is a temporary disruption of blood flow to the brain. Symptoms typically last for minutes to hours and resolve within 24 hours without causing permanent neurological damage.
B. CVA stands for Cerebrovascular Accident, which refers to a stroke. A CVA causes permanent neurological damage due to a lack of blood flow to the brain.
C. TPN stands for Total Parenteral Nutrition, which is a method of delivering nutrition intravenously to patients who cannot eat or absorb food normally. It is unrelated to cerebral circulation.
D. MI stands for Myocardial Infarction, which is a heart attack. It involves damage to the heart muscle due to a lack of blood flow but does not refer to cerebral circulation.
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Related Questions
Correct Answer is C
Explanation
A. A thrombotic stroke is typically caused by a blood clot that forms in an artery supplying blood to the brain, usually due to atherosclerosis. While it is a possible cause of stroke, it is not the most likely in this patient with atrial fibrillation.
B. A cerebral aneurysm involves a weakness in the blood vessel wall that can lead to rupture and bleeding, causing a hemorrhagic stroke, but this is not the most common type of stroke in patients with atrial fibrillation.
C. Embolic stroke occurs when a clot or other debris (such as a thrombus) breaks off from a distant part of the body (like the heart in atrial fibrillation) and travels to the brain, blocking a cerebral artery. This is the most common type of stroke in patients with atrial fibrillation due to the formation of clots in the left atrium that can embolize to the brain.
D. Hemorrhagic stroke is caused by the rupture of a blood vessel in the brain, leading to bleeding. It is not the most common type of stroke in patients with atrial fibrillation, though it can occur if there is coagulopathy or anticoagulant therapy.
Correct Answer is D
Explanation
A. Emotional lability (rapid mood swings) can occur with brain injuries, but it is more commonly associated with damage to the frontal lobe, not the brainstem.
B. Personality changes are also more likely to result from damage to the frontal lobe or other areas of the brain responsible for behavior and personality, not the brainstem.
C. Diabetes insipidus can result from brain injury, particularly damage to the hypothalamus or pituitary gland, but it is not a direct consequence of brainstem injury.
D. Unstable vital signs are a common result of damage to the brainstem, which is responsible for regulating autonomic functions such as heart rate, blood pressure, and respiration. Damage to the brainstem can lead to life-threatening instability in these vital functions.
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