Correct Answer: B

Rationale: When a nurse discovers a discrepancy in the narcotics log, the appropriate next step is to report the discrepancy to the nurse manager. This is important to ensure that the issue is properly investigated and addressed. Choice A is incorrect because simply correcting the log and notifying the pharmacy may not address the root cause of the discrepancy. Choice C is incorrect as re-administering the narcotic without clarification could lead to potential harm or legal issues. Choice D is incorrect as disposing of the narcotic without following proper protocols and documentation could result in further complications.

Correct Answer: A

Rationale: The correct answer is A: Perform hand hygiene before and after patient contact. Effective hand hygiene is a fundamental infection control measure that helps prevent the spread of pathogens. Wearing gloves when administering medications (choice B) is important for protecting both the patient and the nurse but is not a direct demonstration of infection control. Disposing of used equipment in designated containers (choice C) is more related to proper waste management than infection control. Wearing a mask when interacting with the patient (choice D) is essential in certain situations, but hand hygiene is a more universal and critical practice for infection control.

Correct Answer: B

Rationale: The most effective intervention in preventing deep vein thrombosis (DVT) in a postoperative patient is to encourage early ambulation and leg exercises. Early ambulation helps promote circulation, preventing stasis and reducing the risk of blood clot formation. Encouraging the patient to drink plenty of fluids (choice A) is important for overall health but is not the most effective intervention for preventing DVT. Administering anticoagulants (choice C) is a valuable intervention in some cases, but it may not be suitable for all postoperative patients. Applying compression stockings (choice D) can help prevent DVT but is generally not as effective as early ambulation and leg exercises in postoperative patients.

Correct Answer: B

Rationale: Verifying the patient's identity using two identifiers is crucial to ensure the right patient receives the right medication. This process helps prevent medication errors by confirming the patient's identity through at least two unique identifiers, such as name, date of birth, or medical record number. Choice A is not directly related to ensuring patient safety during medication administration. Choice C is incorrect as medications should be prepared in a sterile environment, not just at the healthcare professional's station. Choice D is not a safe practice as medications should be administered at the scheduled time to maintain therapeutic effectiveness.

Correct Answer: D

Rationale: The nurse should reassure the family member that seeking help does not imply mental illness, but is part of coping with the disaster.