The nurse administers IV nitroglycerin to a client diagnosed with an acute myocardial infarction. In evaluating the effectiveness of this intervention, the nurse should monitor for:
decrease in heart rate.
relief of chest pain.
decrease in cardiac dysrhythmias.
decrease in blood pressure.
The Correct Answer is B
A. Decrease in heart rate: While nitroglycerin can sometimes cause reflex tachycardia (an increase in heart rate) as a compensatory mechanism in response to a decrease in blood pressure, its primary effect is on reducing myocardial oxygen demand through vasodilation. Although heart rate may decrease in some situations due to improved perfusion or as a secondary response to pain relief, a decrease in heart rate is not the most reliable or immediate indicator of effectiveness in this context. The relief of chest pain is a more direct measure of the drug's impact.
B. Relief of chest pain: Nitroglycerin works by dilating blood vessels, which reduces myocardial oxygen demand and improves blood flow to the heart, particularly in cases of acute myocardial infarction (MI). The primary therapeutic goal is to relieve chest pain (angina) and reduce the workload of the heart. Monitoring for relief of chest pain is the most direct and important indicator of the medication's effectiveness. If the chest pain decreases or resolves, it suggests that the medication is helping to alleviate the ischemia caused by the MI.
C. Decrease in cardiac dysrhythmias: Nitroglycerin is not primarily used to treat dysrhythmias, although improved perfusion and reduced myocardial oxygen demand may indirectly reduce the occurrence of dysrhythmias in some cases. However, a decrease in dysrhythmias is not a primary goal of nitroglycerin therapy, and the nurse should not primarily monitor for this outcome. Any dysrhythmias should be managed with other specific interventions if needed.
D. Decrease in blood pressure: Nitroglycerin's vasodilatory effect does lead to a reduction in blood pressure, particularly in patients with high blood pressure or in the context of a myocardial infarction. However, excessive hypotension can be dangerous and may lead to inadequate perfusion of vital organs. The nurse must monitor blood pressure closely to avoid hypotension, but a decrease in blood pressure is not the main goal of therapy. The primary objective is to relieve the chest pain associated with the MI. If blood pressure drops too low, it may indicate a need to adjust the dose or discontinue the nitroglycerin.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Encourage the daily use of the incentive spirometer: While the use of an incentive spirometer is important for improving lung expansion and preventing atelectasis, it may not be effective unless the client’s pain is well-managed. If pain is not addressed first, the client may be unable or unwilling to use the incentive spirometer properly, thus delaying recovery and increasing the risk of respiratory complications.
B. Assisting the client with ambulation in the hallway: Ambulation is an important post-operative activity for improving circulation and preventing complications such as deep vein thrombosis (DVT) or pneumonia. However, the priority at this time should be addressing the client's pain and ensuring adequate breathing before attempting more strenuous activities like ambulation. If the client is in pain and not breathing effectively, ambulation could exacerbate respiratory difficulties..
C. Increasing the chest tube suction to 44 mmHg: Increasing chest tube suction is not indicated unless there is evidence of inadequate drainage or a specific complication, such as a pneumothorax or pleural effusion. In this case, the priority is to address the client’s respiratory function, which is more likely to improve with pain relief, deep breathing, and appropriate positioning. Suctioning should only be adjusted if there is a clinical reason such as signs of a pneumothorax or inadequate drainage, which is not indicated by the information provided.
D. Assessing for adequate pain relief: The most urgent intervention in this scenario is ensuring that the client has adequate pain relief. The client’s shallow respirations and guarding of the operative site suggest that pain is inhibiting effective breathing and deep inspiration, which is crucial for preventing atelectasis and improving ventilation. Pain control is essential in promoting optimal respiratory function, as uncontrolled pain can lead to shallow breathing, reduced lung expansion, and compromised gas exchange, all of which can increase the risk of acute respiratory failure. Once pain is managed, the client will be better able to engage in other respiratory interventions
Correct Answer is C
Explanation
A. "I will report any unusual movements or behaviors to my healthcare provider."
This statement is correct and indicates that the client understands the potential side effects of levodopa/carbidopa. The medication can cause dyskinesia (uncontrolled movements) and other behavioral changes, so the client should report these symptoms to their healthcare provider for possible adjustment of the treatment plan.
B. "I may experience nausea while taking this medication."
This is also correct. Nausea is a common side effect of levodopa/carbidopa, especially when starting the medication. Taking it with food may help reduce this side effect, but some clients may still experience nausea.
C. "I will take this medication with a high-protein meal."
This statement is incorrect. Levodopa is absorbed best on an empty stomach or with a low-protein meal. Protein can interfere with the absorption of levodopa because amino acids (found in proteins) compete with levodopa for absorption across the blood-brain barrier. Therefore, it's recommended that levodopa/carbidopa be taken either 30 minutes before or 1 hour after meals, especially those high in protein.
D. "I will avoid sudden changes in position to prevent dizziness or falls."
This statement is correct. Levodopa/carbidopa can cause orthostatic hypotension (a sudden drop in blood pressure when standing up), which increases the risk of dizziness and falls. The client should be advised to change positions slowly and use support when rising from a sitting or lying position to avoid injury.
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