Correct Answer: A

Rationale: A heart rate of 50 beats per minute is a concerning finding that should be reported before administering metoprolol. Metoprolol is a beta-blocker that can further lower the heart rate, so a heart rate of 50 bpm indicates potential bradycardia, which is a contraindication for administering this medication. Choices B, C, and D are within normal ranges and do not pose immediate concerns related to metoprolol administration.

Correct Answer: C

Rationale: The correct action for the nurse to take when a client on ciprofloxacin reports loss of appetite and a metallic taste in the mouth is to notify the healthcare provider of the client's symptoms. These symptoms could indicate a need for a change in medication or additional treatment, which the healthcare provider would need to assess. Instructing the client to take ciprofloxacin with food (choice B) may help with gastrointestinal upset but will not address the reported symptoms. Reassuring the client (choice A) is important for providing emotional support but does not address the need for further evaluation. Encouraging increased fluid intake (choice D) is generally beneficial but may not directly address the specific side effects reported.

Correct Answer: B

Rationale: The correct nursing diagnosis for this client is 'Impaired skin integrity related to altered circulation and pressure.' The client's Stage II pressure ulcer on the left hip is a clear indication of impaired skin integrity resulting from altered circulation and pressure due to immobility. Choice A is incorrect because the client already has a pressure ulcer, indicating an actual impairment rather than a risk. Choice C is incorrect as ineffective tissue perfusion is not the primary issue in this case. Choice D is incorrect as it focuses solely on the paralysis and not the actual skin integrity issue.

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: A

Rationale: In a client with chronic renal failure, difficulty breathing is the most critical finding to report. This symptom may indicate fluid overload or pulmonary edema, which can be life-threatening. Shortness of breath when lying flat (orthopnea) is also concerning but less urgent than difficulty breathing. Swelling in the feet and ankles (edema) is a common finding in renal failure but may not be as immediately critical as difficulty breathing. A metallic taste in the mouth is associated with uremia, a common complication of chronic renal failure, but it is not as urgent as respiratory distress.