Nursing Elites

1. What is the primary purpose of administering an antiemetic?

• A. To reduce nausea and vomiting
• B. To increase appetite
• C. To treat nausea caused by chemotherapy
• D. To treat allergic reactions

Correct answer: A

Rationale: The correct answer is A: 'To reduce nausea and vomiting.' Antiemetics are medications used to prevent or alleviate nausea and vomiting. While they may indirectly help with appetite by reducing the unpleasant symptoms that can lead to decreased food intake, their primary purpose is not to increase appetite (Choice B). Choice C, 'To treat nausea caused by chemotherapy,' is partly correct as antiemetics are commonly used to manage chemotherapy-induced nausea, but this is not their exclusive purpose. Choice D, 'To treat allergic reactions,' is incorrect as antiemetics are not primarily used for treating allergic reactions.

2. A client with a history of angina reports substernal chest pain that radiates to the left arm. Which of the following actions should the nurse take first?

• A. Administer nitroglycerin sublingually.
• B. Administer 2L of oxygen via nasal cannula.
• C. Administer aspirin 325 mg orally.
• D. Obtain a 12-lead ECG.

Correct answer: D

Rationale: In a client with a history of angina experiencing chest pain radiating to the left arm, obtaining a 12-lead ECG is the priority action to assess for myocardial infarction. An ECG helps in diagnosing and evaluating the extent of cardiac ischemia or infarction. Administering nitroglycerin, oxygen, or aspirin can follow once the ECG has been performed to confirm the diagnosis and guide further interventions. Administering nitroglycerin sublingually is often appropriate for angina but should not precede the ECG in this urgent scenario. Oxygen therapy and aspirin administration are important interventions but obtaining the ECG takes precedence in assessing for acute cardiac events.

3. A healthcare professional is reviewing a client's laboratory results. Which of the following values is a contraindication to the administration of heparin?

• A. Hemoglobin 13 g/dL
• B. Platelet count 50,000/mm³
• C. White blood cell count 6,000/mm³
• D. INR 2.5

Correct answer: B

Rationale: The correct answer is B: Platelet count 50,000/mm³. A platelet count of 50,000/mm³ increases the risk of bleeding, making heparin contraindicated. Platelets are essential for blood clotting, and a low count can lead to excessive bleeding. Choices A, C, and D are not contraindications to heparin administration. Hemoglobin level of 13 g/dL is within the normal range, white blood cell count of 6,000/mm³ is also normal, and an INR of 2.5 is within the therapeutic range for patients receiving heparin therapy.

4. A nurse is reviewing the results of an arterial blood gas analysis of a client who has chronic obstructive pulmonary disease. Which of the following results should the nurse expect?

• A. PaO2 of 95 mm Hg
• B. PaCO2 of 55 mm Hg
• C. HCO3 of 24 mEq/L
• D. pH level of 7.35

Correct answer: B

Rationale: In chronic obstructive pulmonary disease, there is impaired gas exchange, leading to retention of carbon dioxide (CO2) and subsequent respiratory acidosis. A PaCO2 of 55 mm Hg is higher than the normal range (35-45 mm Hg) and is indicative of respiratory acidosis in COPD. Choices A, C, and D are not typically associated with COPD. PaO2 may be decreased, HCO3 may be elevated to compensate for acidosis, and pH may be lower than 7.35 due to respiratory acidosis in COPD.

5. A client who has a new prescription for lithium is receiving discharge teaching from a nurse. Which of the following client statements indicates an understanding of the teaching?

• A. I will need to have my blood levels checked regularly while taking this medication.
• B. I should take this medication on an empty stomach.
• C. I should avoid eating foods that are high in sodium.
• D. I should stop taking this medication if I experience nausea.

Correct answer: A

Rationale: The correct answer is A. Clients prescribed lithium need regular monitoring of blood levels to ensure the medication's effectiveness and safety. This monitoring helps to keep the medication within the therapeutic range and prevent toxicity. Choice B is incorrect because lithium is usually taken with food to minimize gastrointestinal side effects. Choice C is not directly related to lithium therapy; however, excessive sodium intake can affect lithium levels. Choice D is incorrect as abruptly stopping lithium can lead to adverse effects and should only be done under healthcare provider guidance.

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