Correct Answer: C

Rationale: The correct answer is C. Using a rear-facing car seat is the safest position for a newborn. Newborns should always be placed in a rear-facing car seat in the back seat of the vehicle to provide optimal safety in case of a crash. Choice A is incorrect because placing the car seat in the front seat is not safe due to the presence of airbags. Choice B is incorrect as securing the car seat using the seatbelt is not specific to the correct positioning of the car seat. Choice D is incorrect because installing the car seat facing forward is not recommended for newborns as it does not provide the same level of protection as a rear-facing position.

Correct Answer: B

Rationale: The correct answer is B. Changing the TPN tubing every 24 hours is crucial in preventing infection by reducing the risk of bacterial contamination. Monitoring electrolyte levels (choice A) is essential but not directly related to preventing TPN-related infections. Monitoring blood glucose levels (choice C) is important for clients receiving TPN, but it is more related to glycemic control than infection prevention. Administering insulin as prescribed (choice D) is necessary for clients with diabetes but is not directly linked to preventing TPN-related infections.

Correct Answer: A

Rationale: Irritability is a crucial early sign that a client with a tracheostomy may require suctioning. Irritability could indicate a lack of oxygenation due to the airway blockage, prompting the need for suctioning to clear the airway. Hypotension, flushing, and bradycardia are not typically direct indicators for suctioning a tracheostomy. Hypotension may suggest hemodynamic instability, flushing could be related to autonomic responses, and bradycardia might indicate a cardiac issue rather than the need for suctioning.

Correct Answer: B

Rationale: The correct answer is B: 'Monitor blood glucose levels.' When a client is receiving total parenteral nutrition (TPN), which has a high glucose content, it is crucial to monitor blood glucose levels closely to prevent hyperglycemia. Monitoring daily fluid intake (Choice A) is important in other contexts but is not directly related to TPN administration. Measuring intake and output (Choice C) is a general nursing intervention that is relevant for assessing fluid balance but is not specific to TPN administration. Administering insulin as prescribed (Choice D) may be necessary for clients with hyperglycemia, but this intervention is based on the blood glucose monitoring results and the healthcare provider's orders, not a standard intervention for all clients receiving TPN.

Correct Answer: B

Rationale: The correct answer is B because hair loss is a common adverse effect of chemotherapy. Options A, C, and D are incorrect. Avoiding drinking water before meals, experiencing an increase in appetite, or expecting appetite to increase are not related to the potential adverse effects of chemotherapy.