Correct Answer: B

Rationale: The correct answer is B: Focus on the patient’s presenting situation. In the problem-oriented approach, the nurse prioritizes the patient's immediate concerns to address them effectively. By focusing on the presenting situation first, the nurse can gather relevant data and identify key issues. This step ensures that the nurse addresses the most pressing problems promptly. A: Completing questions in chronological order may not be necessary and could delay addressing the immediate concern. C: Making accurate interpretations of data should come after gathering relevant information about the presenting situation. D: Conducting an observational overview is important but should come after focusing on the patient's presenting situation to gather specific data.

Correct Answer: B

Rationale: Severe and extensive hemolysis leads to the release of large amounts of hemoglobin into the bloodstream, causing hemoglobinemia. This can result in hemoglobinuria, leading to acute renal failure and ultimately shock. Shock is the correct answer as it is a severe consequence of extensive hemolysis. Leg ulcers (A) may occur in conditions like peripheral arterial disease. Priapism (C) is unrelated to hemolysis. Compromised growth (D) is not a common consequence of hemolysis.

Correct Answer: D

Rationale: The correct answer is D: “You must avoid hyperextending your neck after surgery.” This is because hyperextending the neck can put excessive strain on the surgical site, leading to potential complications such as bleeding or injury to the incision. Keeping the neck in a neutral position helps promote healing and reduces the risk of complications. A: “The head of your bed must remain flat for 24 hours after surgery.” - Incorrect. Elevating the head of the bed can help reduce swelling and promote drainage after thyroidectomy. B: “You should avoid deep breathing and coughing after surgery.” - Incorrect. Deep breathing and coughing are important to prevent respiratory complications such as pneumonia. C: “You won’t be able to swallow for the first day or two.” - Incorrect. Swallowing may be difficult initially but should improve gradually after surgery.

Correct Answer: A

Rationale: The correct answer is A: Ambulating a patient. Direct care interventions involve hands-on activities directly impacting patient outcomes. Ambulating a patient is a direct care intervention as it involves physically assisting the patient to move, promoting circulation, preventing complications, and improving overall well-being. Inserting a feeding tube (B) and performing resuscitation (C) are also direct care interventions as they involve immediate patient care actions. Documenting wound care (D) is not a direct care intervention as it involves recording information about a care activity rather than physically performing the care itself.

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.