Correct Answer: B

Rationale: The correct answer is B: Administer 6L of IV fluid over the first 24 hours. In HHNS, dehydration is severe due to high blood glucose levels causing osmotic diuresis. Rapid infusion of fluid can lead to fluid overload and exacerbate the situation. Administering 6L over 24 hours helps gradually replenish lost fluids without causing circulatory overload. Choice A is incorrect because rapid infusion can lead to fluid overload. Choice C is incorrect because adding dextrose to the solution can further increase blood glucose levels. Choice D is incorrect because administering IV fluids slowly can delay rehydration in a critical situation like HHNS.

Correct Answer: B

Rationale: The correct answer is B: Wear gloves when providing mouth care. This is because standard precautions for AIDS include wearing gloves when in contact with bodily fluids, such as saliva during mouth care. Maintaining strict isolation (A) is not necessary as AIDS is not transmitted through casual contact. Keeping the client in a private room (C) is not required unless the client has an airborne infection. Wearing a gown when delivering food tray (D) is not necessary for standard precautions unless there is a risk of contamination with bodily fluids.

Correct Answer: A

Rationale: The correct answer is A: Medulla. The medulla is located in the brainstem and plays a crucial role in controlling involuntary functions like breathing. It contains the respiratory center, which regulates the rate and depth of breathing. The medulla sends signals to the diaphragm and intercostal muscles to control breathing. The cerebrum (B) is responsible for higher brain functions, not breathing control. The cerebellum (C) coordinates movement and balance, not breathing. The thalamus (D) relays sensory information to the cerebral cortex, not involved in breathing regulation.

Correct Answer: D

Rationale: The correct answer is D: Presence of laryngospasm. Laryngospasm is a serious complication of trauma to the upper airway that can lead to airway obstruction. Assessing for laryngospasm is crucial to ensure the client's airway remains patent. Pain when talking (A) is more related to vocal cord injury, increased nasal swelling (B) is a symptom of nasal trauma, and burning in the throat (C) may indicate pharyngeal injury, but laryngospasm (D) directly affects airway patency in upper airway trauma cases.

Correct Answer: A

Rationale: The correct answer is A because hepatitis A is caused by a virus from the Picornaviridae family, not the enterovirus family. Hepatitis A spreads through contaminated food or water, not through sexual contact. It is true that hepatitis A occurs worldwide in areas with poor sanitation, but the virus is not from the enterovirus family. Choices B, C, and D are incorrect because they all pertain to hepatitis A characteristics.