Correct Answer: C

Rationale: The correct action for the nurse to take is to withdraw 3 to 5 ml of urine from the port for an accurate culture and sensitivity test. Wiping the area around the needleless port with sterile water (Choice A) is not necessary when obtaining a urine specimen. Inserting the syringe into the needleless port at a 60-degree angle (Choice B) is incorrect as it does not align with the correct procedure for obtaining a urine specimen. Donning sterile gloves (Choice D) is a good practice but not the immediate action required for obtaining a urine specimen.

Correct Answer: C

Rationale: The correct action for the nurse to take is to contact the provider for prescription clarification. Administering vancomycin over less than 60 minutes can lead to infusion reactions like hypotension and flushing. Starting the infusion immediately (choice A) is incorrect as it goes against the prescribed rate. Slowing down the infusion rate (choice B) without provider approval can result in underdosing the medication. Checking blood pressure during the infusion (choice D) is important but not the most immediate action needed in this situation.

Correct Answer: C

Rationale: The correct answer is C: 'Increases cough production.' Guaifenesin is an expectorant that works by increasing cough production to help clear secretions from the airways. Option A is incorrect because guaifenesin does not decrease mucus production but rather helps to make the mucus easier to cough up. Option B is incorrect as guaifenesin does not reduce nasal congestion. Option D is incorrect because guaifenesin does not have any effect on reducing fever.

Correct Answer: D

Rationale: Acetaminophen is the correct choice as it belongs to pregnancy risk category B, making it considered safe during pregnancy. Naproxen, Aspirin, and Ibuprofen are not recommended during pregnancy, especially in the first trimester, as they are classified in higher-risk categories which may be harmful to the developing fetus.

Correct Answer: C

Rationale: A respiratory rate of 8/min is a significant adverse effect of morphine that indicates respiratory depression, which requires immediate intervention to prevent further complications. The client may not be effectively ventilating, leading to hypoxia and respiratory acidosis. Option A is less concerning as being drowsy but responsive is a common side effect of morphine. Option B indicates decreased oxygen saturation, which is also a concern but not as severe as respiratory depression. Option D is important but not as critical as the potential respiratory compromise indicated by the low respiratory rate.