Correct Answer: A

Rationale: In a patient diagnosed with a pulmonary embolism, the most critical intervention is to monitor for signs of increased bleeding. Pulmonary embolism treatment often involves anticoagulation therapy, which increases the risk of bleeding. Monitoring for signs of bleeding such as bruising, petechiae, hematuria, or gastrointestinal bleeding is essential to prevent complications. Instructing on the use of incentive spirometry can be beneficial for preventing pulmonary complications but is not as urgent as monitoring for bleeding. Observing for confusion and restlessness may indicate hypoxia but is not the most crucial intervention in this scenario. Administering intravenous opioids for severe pain might be necessary but is not the priority compared to monitoring for bleeding, which is directly related to the treatment for pulmonary embolism.

Correct Answer: B

Rationale: Clear fluid leaking from the nose is concerning for cerebrospinal fluid leakage, which is a medical emergency requiring immediate intervention. Sluggish pupillary response to light may indicate neurological issues but is not as urgent as CSF leakage. Complaint of severe headache is important but not as critical as the possibility of CSF leakage. Periorbital ecchymosis of the right eye could be indicative of trauma but does not pose an immediate threat to the patient's life.

Correct Answer: C

Rationale: The correct answer is C: "Bilateral breath sounds can be auscultated." This finding indicates that air is moving adequately in and out of both lungs, confirming an open airway. Options A, B, and D are incorrect. Asymmetrical chest expansion may indicate lung or chest wall abnormalities, percussion revealing dullness over the lung area may suggest consolidation or fluid, and turning the client q2h is a position change intervention to prevent complications, not a direct assessment of airway patency.

Correct Answer: C

Rationale: The correct answer is C: 'Recent history of recurrent pneumonia.' Recurrent pneumonia is a hallmark indicator of progression to AIDS in clients with HIV infection. It signifies advanced immunosuppression when the body is unable to fight off infections effectively. Enlarged and tender cervical lymph nodes (Choice A) are more indicative of local infections or inflammation rather than AIDS progression. The presence of a low-grade fever and sore throat (Choice B) may be common in various infections and are not specific to AIDS progression. While a CD4 blood cell count of 300 (Choice D) is below the normal range and indicates immunosuppression, it alone may not be sufficient to suspect progression to AIDS without other supporting indicators like opportunistic infections such as recurrent pneumonia.

Correct Answer: A

Rationale: Elevating the head of the bed to 30 degrees is done to reduce abdominal pressure on the diaphragm, aiding in lung expansion and oxygenation. This position helps improve respiratory mechanics by allowing the diaphragm to move more effectively. Choice B is incorrect as elevating the head of the bed does not directly promote retraction of the intercostal accessory muscles of respiration. Choice C is incorrect because although elevating the head of the bed can assist with airway clearance, its primary purpose in ARDS is to decrease pressure on the diaphragm. Choice D is incorrect because reducing pressure on the medullary center is not the main goal of elevating the head of the bed; the focus is on enhancing lung function and oxygen exchange.