What is the primary cause of myocardial ischemia?
Idiopathic vasospasm.
Atherosclerosis.
Venous emboli.
Arterial emboli from a heart valve.
The Correct Answer is B
Choice A rationale
Idiopathic vasospasm, or spontaneous constriction of the blood vessels, can cause myocardial ischemia. However, this is a relatively rare cause compared to atherosclerosis.
Choice B rationale
Atherosclerosis, a condition characterized by the buildup of fatty plaques in the arteries, is the most common cause of myocardial ischemia. These plaques can restrict blood flow to the heart muscle, leading to ischemia.
Choice C rationale
Venous emboli, or blood clots that form in the veins, typically do not cause myocardial ischemia. These clots are more likely to cause problems in the lungs (pulmonary embolism) if they travel through the bloodstream.
Choice D rationale
Arterial emboli from a heart valve can cause myocardial ischemia, but this is less common than atherosclerosis. These emboli, or blood clots, can block blood flow to the heart muscle if they travel through the bloodstream.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Evaluating the need for smoking cessation is a standard part of nursing care, especially for patients with circulatory issues. Smoking can exacerbate circulatory problems and delay wound healing.
Choice B rationale
Applying TED hose to both legs might not be appropriate for this patient. TED hose are compression stockings designed to prevent deep vein thrombosis and promote circulation. However, in a patient with weak pedal pulses and a full-thickness wound on the leg, the compression from the stockings could potentially worsen circulation to the area and impede wound healing.
Choice C rationale
Consulting with physical therapy could be beneficial for this patient. Physical therapists can provide exercises and interventions to improve circulation and mobility, which could help with the patient’s circulatory issues and wound healing.
Choice D rationale
Obtaining an Ankle-Brachial Index (ABI) using a hand-held Doppler could be useful in this situation. The ABI is a simple, non-invasive test that can help diagnose peripheral artery disease (PAD), a condition that could be causing the patient’s weak pedal pulses and wound healing issues.
Correct Answer is B
Explanation
Choice A rationale
Implementing a smoking cessation program, while beneficial for overall health and cardiovascular risk reduction, is not the primary therapeutic goal for secondary hypertension. Secondary hypertension is high blood pressure caused by an underlying condition. Therefore, the primary goal is to treat the underlying condition.
Choice B rationale
Treating the specific etiological disease is the primary therapeutic goal for secondary hypertension. By treating the underlying cause, blood pressure can often be lowered or returned to normal.
Choice C rationale
Initiating a rapid weight-loss program is not the primary therapeutic goal for secondary hypertension. While weight loss can help lower blood pressure in general, the primary goal in secondary hypertension is to treat the underlying cause.
Choice D rationale
Starting a rigorous exercise regimen, while beneficial for overall health and cardiovascular risk reduction, is not the primary therapeutic goal for secondary hypertension. The primary goal is to treat the underlying condition causing the high blood pressure.
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