The nurse administers atenolol 50 mg PO bid to a client who has coronary artery disease. The nurse understands that the therapeutic effect of this medication for this client is to:
Decrease the incidence of tachycardia
Dilate the coronary arteries
Decrease cardiac workload
Increase the strength of myocardial contraction
The Correct Answer is A
Choice A reason: Decreasing the incidence of tachycardia is not the main therapeutic effect of atenolol for coronary artery disease. Atenolol is a beta-blocker that lowers the heart rate, but this is not the primary goal of therapy for coronary artery disease. Coronary artery disease is caused by atherosclerosis, which is the buildup of plaque in the arteries that supply the heart. This reduces the blood flow and oxygen to the heart muscle and causes angina, or chest pain.
Choice B reason: Dilating the coronary arteries is not the therapeutic effect of atenolol for coronary artery disease. Atenolol does not directly affect the diameter of the coronary arteries. It works by blocking the beta receptors in the heart and reducing the response to adrenaline and other stress hormones. This lowers the blood pressure and the oxygen demand of the heart.
Choice C reason: This is the correct answer. Decreasing cardiac workload is the therapeutic effect of atenolol for coronary artery disease. Atenolol reduces the contractility and the excitability of the heart muscle, which lowers the force and the frequency of the heartbeats. This decreases the amount of work that the heart has to do and the amount of oxygen that it needs. This helps prevent or relieve anginal attacks and improve the quality of life of the client.
Choice D reason: Increasing the strength of myocardial contraction is not the therapeutic effect of atenolol for coronary artery disease. Atenolol does not increase the strength of myocardial contraction, but rather decreases it. Increasing the strength of myocardial contraction would increase the oxygen demand of the heart and worsen the angina. Atenolol aims to reduce the oxygen demand of the heart and improve the blood supply to the heart.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
Choice A reason: The client requires additional teaching if they state that they can have aspirin for pain after the bone marrow aspiration. Aspirin is a drug that inhibits platelet aggregation and increases the risk of bleeding. ¹ The client should avoid aspirin and other nonsteroidal anti-inflammatory drugs (NSAIDs) for at least 48 hours after the procedure. ² The client should use acetaminophen or another pain reliever that does not affect blood clotting.
Choice B reason: The client does not require additional teaching if they state that the nurse will check the puncture site at least every 4 hours after the procedure. This is a correct statement, as the nurse should monitor the site for signs of bleeding, infection, or hematoma. ² The nurse should also apply pressure and a sterile dressing to the site and instruct the client to keep it dry and clean for 24 hours.
Choice C reason: The client does not require additional teaching if they state that they will have some pain that is similar to a toothache. This is a correct statement, as the client may experience mild to moderate pain at the site of the aspiration, which may radiate to the hip or back. ² The pain usually subsides within a few hours or days.
Choice D reason: The client does not require additional teaching if they state that they understand that this is a sterile procedure. This is a correct statement, as the bone marrow aspiration is performed under sterile conditions to prevent infection. ² The nurse should wear gloves, gown, mask, and eye protection and use a sterile needle, syringe, and antiseptic solution.
Correct Answer is D
Explanation
Choice A reason: Avoiding strenuous activity and standing up slowly is not a relevant response to the client's complaint of headache. These actions may help prevent or reduce orthostatic hypotension, which is another possible side effect of nitroglycerin, but not headache.
Choice B reason: Headache is expected and should subside with continued use is a correct and appropriate response to the client's complaint of headache. The nurse should explain that headache is a common and transient side effect of nitroglycerin, which is caused by the vasodilation effect of the drug. The nurse should also advise the client to take over-the-counter analgesics, such as acetaminophen, to relieve the headache.
Choice C reason: Reducing the dosage to help relieve this side effect is not a correct or appropriate response to the client's complaint of headache. The nurse should not suggest any changes in the prescribed dosage of nitroglycerin, as this may compromise the effectiveness of the drug and increase the risk of angina or myocardial infarction. The nurse should also remind the client to follow the instructions for applying and removing the Nitropatch.
Choice D reason: You will have this side effect as long as you are taking nitroglycerin is not a correct or appropriate response to the client's complaint of headache. The nurse should not discourage or alarm the client by implying that the headache is inevitable and permanent. The nurse should reassure the client that the headache will likely diminish over time as the body adapts to the drug.
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