What is the primary cause of myocardial ischemia?

Idiopathic vasospasm.

Atherosclerosis.

Venous emboli.

Arterial emboli from a heart valve.

Answer and Explanation

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.

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Correct Answer is C

Explanation

Choice A rationale
While assessing the gag reflex is important in certain situations, such as after surgery involving anesthesia, it is not typically a crucial assessment following Percutaneous Transluminal Angioplasty (PTA) of the lower extremity.
Choice B rationale
Checking for dye allergies is important before a procedure that uses contrast dye. However, it is not a crucial post-procedure assessment.
Choice C rationale
Monitoring of pedal pulses is crucial following PTA of the lower extremity. This is because the procedure involves the arteries in the legs, and monitoring pedal pulses can help assess blood flow to the area and detect potential complications such as occlusion or clot formation.
Choice D rationale
While the Ankle-Brachial Index can be used to diagnose Peripheral Arterial Disease (PAD), it is not typically a crucial assessment immediately following PTA3.

A. Providing a pressure reducing mattress. B. Administering oxygen and monitoring for dry nasal mucus membranes. C. Encouraging the client to turn, deep breathe, cough, and use the incentive spirometer. D. Placing the client in Fowler’s position.

Correct Answer is A

Explanation

Choice A rationale
Providing a pressure-reducing mattress, while important for preventing pressure ulcers, is not directly related to improving gas exchange in the lungs. Therefore, it would be considered the least priority intervention for a nursing diagnosis of impaired gas exchange related to fluid in the alveoli.
Choice B rationale
Administering oxygen and monitoring for dry nasal mucus membranes is a crucial intervention for a patient with impaired gas exchange. Oxygen therapy can help increase the amount of oxygen in the blood and alleviate symptoms of hypoxemia.
Choice C rationale
Encouraging the client to turn, deep breathe, cough, and use the incentive spirometer can help improve lung ventilation, promote the clearance of secretions, and prevent atelectasis, thereby improving gas exchange.
Choice D rationale
Placing the client in Fowler’s position can help improve lung expansion and gas exchange by reducing pressure on the diaphragm, making it easier for the patient to breathe.

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What is the primary cause of myocardial ischemia?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A patient with Peripheral Arterial Disease (PAD) has recently undergone Percutaneous Transluminal Angioplasty (PTA) of the lower extremity. Which assessment is crucial for the nurse to perform post-procedure?

Correct Answer is C

Explanation

Correct Answer is A

Explanation

Which of the following findings in a patient with Raynaud’s disease would indicate a need for further teaching?

What patient data would indicate to the nurse that the infusion of a thrombolytic agent should be stopped in a patient with an acute myocardial infarction?

As a nurse in a community-based setting, you are educating clients on strategies to prevent cardiovascular disease. Which interventions should you include? (Select all that apply)

Most cases of combined systolic and diastolic hypertension have no known cause and are documented on the chart as what type of hypertension?

What is the most appropriate advice for a patient suffering from arterial insufficiency?

Which patient statement indicates that the nurse’s teaching about sublingual nitroglycerin (Nitrostat) has been effective?

If a patient diagnosed with hypertension is prescribed Propranolol (Inderal), what patient history should prompt the nurse to consult with the healthcare provider before administering this drug?

The nurse is caring for a client with an acute myocardial infarction (AMI). What emergent procedure does the nurse anticipate the physician will order?