Correct Answer: D

Rationale: Antiphospholipid syndrome is characterized by abnormal antiphospholipid antibodies, which can lead to an increased risk of blood clots such as deep vein thrombosis (DVT) and pulmonary embolism (PE). The two most common antiphospholipid antibodies are anticardiolipin and lupus anticoagulant. Patients with antiphospholipid syndrome can present with recurrent thrombotic events, such as DVT and PE, due to the pro-thrombotic effects of these antibodies. Protein C deficiency, Protein S deficiency, and Antithrombin III deficiency are other causes of hypercoagulability but would not typically present with elevated antiphospholipid antibodies.

Correct Answer: A

Rationale: Task A, obtaining special food for the patient when she requests it, can be delegated to the nursing assistant. This task involves simple assistance with gathering food items and does not require specific medical knowledge or interventions. Tasks B, C, and D involve more direct patient care and assessment, which should be performed by the nursing staff who have the necessary training and expertise to address the complexities of anorexia nervosa.

Correct Answer: D

Rationale: The best course of action in this scenario is to place a warm wet washcloth over Claudia's eyes for at least three minutes. This will help soften and loosen the dried crust, making it easier to gently clean her eyes and open them. Applying eye drops or ointment may not be effective if the crust is blocking her eyes completely. By using a warm wet washcloth, you can improve the ability to clean her eyes effectively and without causing discomfort.

Correct Answer: A

Rationale: The best thing to do next is to turn off the fan immediately. The fact that the electric fan is stopping every now and then and sparking at intervals indicates a potential electrical issue or malfunction. This situation poses a safety hazard as it increases the risk of an electrical fire or damage to the fan. Turning off the fan immediately will help prevent any further damage or potential danger. After turning off the fan, it would be advisable to call for maintenance to inspect and repair the fan to ensure it is safe to use again.

Correct Answer: D

Rationale: Escherichia coli (E. coli) is the MOST common causative agent of urinary tract infection (UTI), accounting for approximately 80-85% of all cases. E. coli is a type of bacteria that naturally resides in the gastrointestinal tract and can easily migrate to the urinary tract, causing infection. Its prevalence in UTIs is due to various factors such as its ability to adhere to the uroepithelial cells and form biofilms, leading to persistent infections. Therefore, E. coli is the most common organism responsible for UTIs in both community and healthcare settings.