Correct Answer: A

Rationale: There is a drug-food interaction between statins and grapefruit that can lead to acute kidney failure. The client has elevated renal laboratory results, indicating kidney involvement. The nurse should ask if the client consumes grapefruit or grapefruit juice. While dehydration can elevate BUN, the increase in creatinine is more specific for kidney injury.

Correct Answer: B

Rationale: A low platelet count, as seen in choice B, is concerning as it could indicate heparin-induced thrombocytopenia, a serious side effect of heparin therapy. Heparin-induced thrombocytopenia can lead to an increased risk of blood clotting, potentially causing severe complications. Monitoring platelet counts is crucial during heparin therapy to promptly identify and manage this adverse effect.

Correct Answer: C

Rationale: After a bronchoscopy, a topical anesthetic affects the gag reflex. Therefore, the nurse should assess the client's gag reflex before providing any food or water to ensure its return. This assessment is crucial to prevent aspiration or choking risk in the client.

Correct Answer: A

Rationale: In a client with a mediastinal chest tube, the presence of pink sputum does not necessarily require immediate intervention. However, tracheal deviation could indicate a tension pneumothorax, sudden shortness of breath could signal tube issues or pneumothorax, and drainage exceeding 70 mL/hr might suggest hemorrhage. Disconnection at the Y site could lead to air entering the tubing, necessitating prompt attention.

Correct Answer: A

Rationale: Clients with COPD commonly develop a barrel chest, characterized by an increased anteroposterior diameter of the chest. This change is due to chronic air trapping and hyperinflation of the lungs. A decreased respiratory rate, weight gain, and productive cough with yellow sputum are not typical findings in COPD. Instead, COPD patients often present with an increased respiratory rate, weight loss, and a chronic cough with sputum production.