Correct Answer: C

Rationale: Flumazenil is a competitive benzodiazepine antagonist that can reverse the sedative effects of benzodiazepines like Diazepam. In cases of oversedation, administering Flumazenil can help counteract the excessive sedation and other effects of Diazepam, thereby promoting the client's recovery and preventing potential complications.

Correct Answer: C

Rationale: Severe pain around the eyes that radiates over the face is a classic symptom of acute angle-closure glaucoma. This intense pain is often associated with other symptoms such as blurred vision, halos around lights, redness in the eye, and sometimes nausea and vomiting. Immediate medical attention is required to prevent permanent vision loss.

Correct Answer: A

Rationale: The correct instruction for a client with a new prescription for Phenytoin is to brush and floss their teeth regularly. Phenytoin is known to cause gingival hyperplasia, a condition that affects the gums. By maintaining good oral hygiene practices such as regular brushing and flossing, the client can help minimize the risk of developing this side effect.

Correct Answer: C

Rationale: Warfarin interacts with vitamin K, not potassium. The client needs to be cautious with foods high in vitamin K, not potassium.

Correct Answer: B

Rationale: The nurse should instruct the client to report dyspnea because it can indicate pulmonary toxicity, a serious adverse effect of docetaxel. Dyspnea may be a sign of a potentially life-threatening condition that the healthcare provider needs to address promptly.