Correct Answer: B

Rationale: Before administering a blood transfusion, it is crucial to perform blood typing and cross-matching to ensure compatibility between the donor's blood and the recipient's blood. This process helps prevent adverse reactions such as transfusion reactions, which can be life-threatening. Prothrombin and coagulation time, bleeding and clotting time, as well as CBC and electrolyte levels are important tests in other clinical contexts, but for blood transfusions, blood typing and cross-matching are essential to ensure patient safety.

Correct Answer: C

Rationale: In this scenario, the new head nurse should discuss the problem with her supervisor. This is the most appropriate action as the supervisor is in a position to address staffing concerns effectively and make necessary changes. Complaining to fellow nurses may not lead to a solution, waiting may exacerbate the issue, and demanding staff rotation without proper discussion is not a collaborative approach to resolving the problem.

Correct Answer: B

Rationale: Touching the outside wrapper of sterilized material without sterile gloves can introduce contaminants and compromise the sterility of the item. It is crucial to maintain strict adherence to sterile technique to prevent infections and ensure patient safety during procedures.

Correct Answer: D

Rationale: Hip fracture is the most common injury among elderly persons. As people age, their bones become more fragile, making them more susceptible to hip fractures, often resulting from falls. These fractures can significantly impact an elderly person's quality of life and mobility, making them a significant concern in geriatric care.

Correct Answer: C

Rationale: Patients with impaired awareness may exhibit symptoms such as being semiconscious, overfatigued, disoriented, confused, or demonstrating symptoms of drug or alcohol withdrawal. A patient who cannot care for themselves at home does not necessarily indicate impaired awareness, as this could be due to physical limitations or lack of support, rather than a cognitive deficit.