Correct Answer: A

Rationale: Teaching the client about self-administration techniques for subcutaneous injection is crucial for safe and effective use of enoxaparin. Option A is the correct answer as it directly addresses the client's need to know how to properly administer the medication. Options B, C, and D are important aspects of care but are not the most critical information needed for the client's self-administration of enoxaparin.

Correct Answer: B

Rationale: The correct action for the nurse to take when observing continuous bubbling in the water seal chamber of the chest tube drainage system is to notify the healthcare provider. Continuous bubbling indicates a possible air leak, and the healthcare provider needs to be informed to assess the situation and take appropriate actions. Checking for kinks in the tubing (Choice A) may be done initially but is not the priority when continuous bubbling is present. Replacing the chest tube drainage system (Choice C) and reinforcing the chest tube dressing (Choice D) are not immediate actions needed in response to continuous bubbling in the water seal chamber.

Correct Answer: C

Rationale: The correct answer is C because a fast heart rate and jitteriness are common side effects of bronchodilators like albuterol. Choice A is incorrect as nervousness is more likely a side effect of the medication than solely related to hypoxia. Choice B is incorrect as it provides a partial explanation focusing only on tremors and heart rate, not mentioning jitteriness. Choice D is incorrect because excessive coughing and tachypnea are not typically associated with bronchodilator use; instead, they may indicate inadequate relief or other issues.

Correct Answer: A

Rationale: To calculate the infusion rate, we first need to determine the frequency of contractions per hour. If contractions are occurring every 2 to 3 minutes, this corresponds to 20 to 30 contractions in an hour (60 minutes). The average is 25 contractions in an hour. The pump should be infusing 1 ml for each contraction, so the infusion rate should be 25 ml/hr. Therefore, the correct answer is 42 ml/hr. Choices B, C, and D are incorrect as they do not align with the calculation based on the given data.

Correct Answer: A

Rationale: When a client is receiving opioids like morphine sulfate via a PCA pump, the most critical action for the nurse to implement is to monitor the client's respiratory status. Opioids can cause respiratory depression, which can be life-threatening. Monitoring respiratory status allows for early detection of any signs of respiratory compromise. Teaching the client how to use the PCA pump, evaluating pain level, and assessing pain level are important aspects of care but ensuring the client's safety by monitoring respiratory status takes precedence due to the potential risks associated with opioid administration.