A post myocardial infarction patient experiences atrial fibrillation is most at risk for which type of stroke?
Thrombotic stroke
Cerebral aneurysm
Embolic stroke
Hemorrhagic stroke
The Correct Answer is C
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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Bowel or bladder incontinence is a medical emergency and should be immediately reported. This symptom can indicate cauda equina syndrome, a condition caused by compression of the spinal nerves at the lower end of the spinal cord. This requires urgent surgical intervention to prevent permanent nerve damage.
B. Lower back pain is a common symptom of a herniated lumbar disk, but it is not an immediate emergency unless accompanied by other severe symptoms.
C. Muscle spasms are also common with a herniated disk and, while uncomfortable, are not immediately life-threatening.
D. Pain radiating down one leg (sciatica) is a typical symptom of a herniated lumbar disk and is often managed conservatively, unless it is severe or accompanied by other neurological deficits.
Correct Answer is B
Explanation
A. Unstable blood pressure can occur with damage to the hypothalamus or pituitary, but it is more commonly associated with other neurological conditions. While blood pressure may fluctuate, it is not the most direct result of pituitary or hypothalamic damage.
B. Diabetes insipidus is the correct answer. The pituitary gland secretes antidiuretic hormone (ADH), which helps regulate water balance. Damage to the pituitary or hypothalamus can lead to a deficiency of ADH, causing diabetes insipidus, which is characterized by excessive thirst and urination.
C. Diabetes mellitus is a condition related to insulin production and blood sugar regulation, typically caused by pancreatic issues, not damage to the pituitary or hypothalamus.
D. Altered respiratory rate can occur with brain injury, but it is more commonly associated with damage to the brainstem rather than the hypothalamus or pituitary.
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