Halfway through the administration of a unit of blood, a client complains of lumbar pain. The nurse should:

Correct Answer: C

Rationale: The correct answer is C: Stop the transfusion. Lumbar pain during blood administration could indicate a transfusion reaction, such as a hemolytic reaction or fluid overload. Stopping the transfusion is crucial to prevent further harm to the client. Obtaining vital signs (A) is important but not the priority when a transfusion reaction is suspected. Assessing the pain further (B) may delay necessary intervention. Increasing the flow of normal saline (D) is not indicated and may worsen fluid overload. In this situation, stopping the transfusion is the most appropriate action to ensure client safety.

Correct Answer: A

Rationale: The correct answer is A: A clot can enter the circulation. When a clotted cannula is aggressively flushed, the force can dislodge the clot, allowing it to enter the circulation and potentially leading to serious complications such as embolism. Incorrect choices: B: An air embolism can enter the circulation - In the context of a clotted cannula, air embolism is less likely compared to a clot entering the circulation. C: A painful arterial spasm can occur - Arterial spasm is a potential complication but not directly related to flushing a clotted cannula. D: Fluid extravasation into surrounding tissue can occur - Flushing a clotted cannula may not specifically lead to fluid extravasation, as it is more related to needle dislodgement or improper placement.

Correct Answer: C

Rationale: The correct answer is C: Airway obstruction. Postoperatively, a nurse must assess for airway patency in a client with a nasal fracture to ensure proper breathing. Any swelling or bleeding in the nasal area can lead to airway obstruction, which is a critical concern that needs immediate intervention. Choices A, B, and D are incorrect because an allergic reaction, extreme sense of smell, and stridor are not typically associated with postoperative assessment of a nasal fracture. It is crucial to prioritize airway assessment to prevent any complications related to breathing difficulties in this situation.

Correct Answer: D

Rationale: The correct answer is D: Emphasize the completion of the entire course of drug therapy. Empyema is a serious condition that requires antibiotic treatment. Emphasizing the completion of the entire course of drug therapy is crucial to ensure that the infection is completely eradicated and to prevent the development of drug-resistant strains. Teaching breathing exercises (choice A) may help improve lung function but is not the primary intervention for empyema. Offering assurance that empyema takes less time to resolve (choice B) is incorrect as it can mislead the client about the seriousness of the condition. Recommending a balanced but light diet (choice C) may be beneficial for overall health but is not directly related to treating empyema.

Correct Answer: D

Rationale: The correct answer is D: Maturates T cells. The thymus gland is crucial for the maturation of T cells, a type of white blood cell that plays a central role in the adaptive immune response. T cells mature in the thymus through a process of selection and education, where they learn to distinguish self from non-self antigens. This process is essential for the development of a functional immune system. Choices A, B, and C are incorrect because the thymus gland does not play a role in the maturation of B cells, platelets, or red blood cells, respectively.