Isky, a 65-year-old female, is admitted to the hospital after experiencing sudden weakness or and numbness on the right side or of her body, along with difficulty speaking. Isky has a medical history that includes hypertension, diabetes mellitus, and smoking. This type Which of stroke is Isky most likely experiencing based on the sudden onset of her symptoms?
Hemorrhagic stroke
Ischemic stroke
Transient ischemic attack
Subarachnoid hemorrhage
The Correct Answer is B
Choice A reason: Hemorrhagic stroke often causes headache and severe neurological deficits, not just sudden weakness. Ischemic stroke, from a clot, fits Isky’s sudden focal symptoms, so this is incorrect.
Choice B reason: Ischemic stroke, caused by arterial occlusion, presents with sudden weakness, numbness, and speech issues, as seen in Isky. Her risk factors (hypertension, diabetes, smoking) support this, making it correct.
Choice C reason: Transient ischemic attack resolves quickly, unlike Isky’s ongoing symptoms. Ischemic stroke causes persistent deficits, matching her presentation, so this is incorrect for the stroke type.
Choice D reason: Subarachnoid hemorrhage typically involves severe headache, not focal weakness. Ischemic stroke aligns with Isky’s sudden, unilateral symptoms, so this is incorrect for her condition.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: Ventilation-perfusion (V/Q) mismatch, where lung regions receive inadequate ventilation or perfusion, is the most common cause of hypoxemia. Conditions like pneumonia or pulmonary embolism disrupt this balance, reducing oxygen exchange, making this the primary cause in clinical settings.
Choice B reason: Hyperventilation with hypocapnia lowers carbon dioxide but does not typically cause hypoxemia, as oxygen levels are usually maintained or increased. It affects acid-base balance more than oxygenation, making this an incorrect primary cause of low oxygen levels.
Choice C reason: Reduced diffusion distance is not a cause but a facilitator of gas exchange. Impaired diffusion (e.g., pulmonary edema) can contribute to hypoxemia, but V/Q mismatch is more prevalent across conditions, making this less common as a primary cause.
Choice D reason: Shunting, where blood bypasses ventilated alveoli, causes hypoxemia but is less common than V/Q mismatch. It occurs in specific conditions like congenital heart defects or ARDS, but V/Q mismatch predominates in most respiratory disorders, making this incorrect.
Correct Answer is C
Explanation
Choice A reason: Smoking is a significant risk factor for ischemic stroke, contributing to vascular damage. However, hypertension has a stronger association, directly causing arterial stress and clot formation, so this is less critical than hypertension.
Choice B reason: Diabetes increases stroke risk by promoting atherosclerosis, but its impact is less immediate than hypertension, which directly elevates arterial pressure and stroke likelihood. Thus, diabetes is incorrect as the most significant factor.
Choice C reason: Hypertension is the most significant risk factor for ischemic stroke, as it damages arteries, promotes clot formation, and increases stroke incidence. Isky’s history highlights this as the primary contributor, making it correct.
Choice D reason: Age (65) is a stroke risk factor, but hypertension’s direct impact on vascular health outweighs age alone. Isky’s controllable risk factor, hypertension, is more significant, so this is incorrect.
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