The PN administered darbepoetin alfa to a client with chronic kidney disease (CKD). Which serum laboratory value should the PN monitor to assess the effectiveness of this drug?

A. Calcium

B. Phosphorus

C. Hemoglobin

D. White blood cell count

Correct Answer: C
Rationale: Darbepoetin alfa is used to stimulate red blood cell production in clients with CKD. Monitoring hemoglobin levels is essential to assess the effectiveness of the treatment and to adjust the dosage to avoid complications such as hypertension or thrombosis. Monitoring calcium (Choice A), phosphorus (Choice B), or white blood cell count (Choice D) is not directly related to the effectiveness of darbepoetin alfa in treating anemia associated with CKD.

When caring for a patient with a chest tube, which nursing action is most important?

• A. Clamping the chest tube every 2 hours to prevent air leaks
• B. Keeping the drainage system below chest level
• C. Emptying the drainage system every hour to prevent backflow
• D. Removing the chest tube when drainage decreases significantly

Correct Answer: B
Rationale: The most crucial nursing action when caring for a patient with a chest tube is to keep the drainage system below chest level (choice B). This position helps ensure proper drainage and prevents backflow of fluid or air into the pleural space, promoting optimal functioning of the chest tube. Clamping the chest tube every 2 hours (choice A) is incorrect as it can obstruct the drainage system and lead to complications. Emptying the drainage system every hour (choice C) is unnecessary unless there are specific clinical indications. Removing the chest tube when drainage decreases significantly (choice D) is also incorrect as the decision should be based on overall clinical assessment rather than drainage amount alone.

A nurse is completing a focused assessment of an older adult's skin. The nurse notes a crusted 0.7 cm lesion on the client's forehead. Which action should the nurse take in response to this finding?

• A. Report the finding to the healthcare provider
• B. Place a clear occlusive dressing over the site
• C. Apply a warm compress to remove the crusted area
• D. Explain that this is a normal skin change with aging

Correct Answer: A
Rationale: A crusted lesion, especially in an older adult, could be indicative of skin cancer or another serious condition. Therefore, reporting this finding to the healthcare provider is crucial for further evaluation and appropriate management. Placing an occlusive dressing (Choice B) could prevent proper assessment and treatment. Applying a warm compress (Choice C) may not be suitable for a suspicious skin lesion as it could worsen the condition. Explaining it as a normal skin change (Choice D) without proper evaluation can delay necessary interventions and potentially harm the patient.

Patients are coming into the emergency room as a result of an apartment house fire. You are examining a patient who is in distress but has no visible burn marks. You suspect that she is suffering from inhalation burns. Which of the following signs would NOT be associated with inhalation burns?

• A. Singed nasal hairs
• B. Conjunctivitis
• C. Hoarseness
• D. Clear sputum

Correct Answer: D
Rationale: Clear sputum would not be associated with inhalation burns. Inhalation burns typically present with symptoms like singed nasal hairs, conjunctivitis, hoarseness, and possibly soot in sputum due to smoke inhalation. Clear sputum suggests that there is no significant inflammation or injury to the respiratory tract, which is not consistent with the typical findings in inhalation burns. The other choices are associated with inhalation burns: singed nasal hairs can occur due to exposure to hot air or gases, conjunctivitis can result from irritating substances in smoke, and hoarseness can be due to airway irritation.

What is the primary function of surfactant in the lungs?

• A. Reduce surface tension
• B. Enhance oxygen absorption
• C. Facilitate carbon dioxide release
• D. Increase lung volume

Correct Answer: A
Rationale: The primary function of surfactant in the lungs is to reduce surface tension in the alveoli. This reduction in surface tension prevents lung collapse and allows for easier breathing. It is particularly crucial in premature infants to help with lung expansion. Choice B is incorrect because surfactant primarily affects surface tension, not oxygen absorption. Choice C is incorrect because surfactant's main role is not in facilitating carbon dioxide release. Choice D is incorrect because surfactant does not directly increase lung volume; its main role is in reducing surface tension.