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.

Answer and Explanation

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.

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Correct Answer is D

Explanation

A. Use pyridostigmine as needed to relieve symptoms of muscle weakness and fatigue: Pyridostigmine should not be used on an "as-needed" basis, as it is a long-acting medication that works by maintaining a steady level of acetylcholine at the neuromuscular junction. The client needs to take the medication regularly at prescribed intervals, not sporadically, to maintain consistent symptom control. This statement reflects a misunderstanding of the medication's use.

B. Be able to crush the sustained release tablet because of difficulty swallowing: Sustained-release (or extended-release) tablets should not be crushed because doing so can cause the medication to be released too quickly, leading to potential side effects or overdose. If the client has difficulty swallowing, an alternative form of the medication, such as a liquid or split tablet, should be considered. This statement reflects a lack of understanding regarding the proper administration of the medication.

C. Skip a dose if I have symptoms of fatigue to minimize side effects of the medications: Skipping doses of pyridostigmine is not appropriate. The medication should be taken as prescribed, even if the client feels fatigued. Fatigue is a symptom of myasthenia gravis, not necessarily a side effect of the medication. Consistent dosing is important for controlling the disease and preventing worsening of symptoms. Skipping doses can lead to inadequate symptom control and potential exacerbation of weakness.

D. Take pyridostigmine 30-60 minutes before meals to improve muscle function: This statement indicates that the client understands the appropriate use of pyridostigmine for managing myasthenia gravis (MG). Pyridostigmine is an acetylcholinesterase inhibitor that helps improve neuromuscular transmission, and it is typically taken 30-60 minutes before meals. This timing helps optimize muscle strength during the period when the client is eating, as muscle weakness can make swallowing more difficult. By taking the medication before meals, the client is more likely to experience improved muscle function when needed most.

A. Apply 4L of nasal oxygen, administer a cough suppressant, and place client on bedrest B. Increase fluid intake, administer antibiotic(s), and facilitate adequate coughing C. Decrease activity, increase bronchodilator use, and encourage pursed lip breathing D. Place in prone position, begin steroid therapy, and monitor glucose levels

Correct Answer is B

Explanation

A) Apply 4L of nasal oxygen, administer a cough suppressant, and place client on bedrest:
This approach is inappropriate for a client with bacterial pneumonia. While oxygen therapy may be necessary for some clients, administering a cough suppressant in this scenario is counterproductive. Pneumonia often leads to the accumulation of secretions, and suppressing the cough would prevent the client from clearing mucus from their airways, potentially worsening the condition. Bedrest is generally indicated, but it should not be the sole intervention.

B) Increase fluid intake, administer antibiotic(s), and facilitate adequate coughing:
This is the most appropriate plan of care. Increasing fluid intake helps to thin the mucus, making it easier to clear from the airways, which is crucial in pneumonia. Antibiotics are necessary to treat the bacterial infection causing pneumonia. Facilitating adequate coughing helps the client expel secretions, reducing the risk of airway obstruction and improving oxygenation. Coarse rhonchi indicate the presence of mucus or secretions, which should be cleared with effective coughing.

C) Decrease activity, increase bronchodilator use, and encourage pursed lip breathing:
Decreasing activity is generally appropriate for a client with pneumonia to reduce fatigue, but increasing bronchodilator use is not typically indicated unless there is underlying bronchospasm, such as in asthma or COPD. Pursed lip breathing can help improve ventilation, but it is more beneficial for clients with obstructive airway diseases, not primarily for those with bacterial pneumonia. Therefore, this option does not address the immediate needs of the client.

D) Place in prone position, begin steroid therapy, and monitor glucose levels:
While prone positioning is helpful in some conditions like acute respiratory distress syndrome (ARDS), it is not routinely used for bacterial pneumonia unless the client has severe hypoxemia and requires advanced respiratory support. Steroid therapy is generally not indicated for bacterial pneumonia unless there is a specific inflammatory component (such as a superimposed condition like asthma or COPD). Monitoring glucose levels may be important in clients on steroid therapy, but this is not a primary concern in the treatment of bacterial pneumonia.

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