Correct Answer: C

Rationale: The correct answer is C: Pernicious anemia. Vitamin B12 is essential for the production of red blood cells, and its deficiency can lead to pernicious anemia, characterized by decreased red blood cell production. Without adequate vitamin B12, the body cannot properly utilize iron, leading to anemia. Iron deficiency anemia (choice A) is a result of insufficient iron levels, not vitamin B12 deficiency. Sickle cell anemia (choice B) is a genetic disorder affecting hemoglobin, not related to vitamin B12 deficiency. Acquired haemolytic anemia (choice D) is caused by the premature destruction of red blood cells, not by vitamin B12 deficiency.

Correct Answer: A

Rationale: Step 1: Pulmonary edema is caused by fluid accumulation in the lungs due to increased pressure in the pulmonary vasculature. Step 2: Decreased left ventricular pumping leads to congestive heart failure, causing increased pressure in pulmonary circulation. Step 3: This increased pressure forces fluid from the capillaries into the alveoli, causing pulmonary edema. Step 4: Increased left atrial contractility (B) would not directly lead to pulmonary edema. Step 5: Decreased right ventricular elasticity (C) and increased right atrial pressure (D) are not directly related to the pathophysiology of pulmonary edema. Summary: The correct answer is A because decreased left ventricular pumping directly contributes to the increased pressure in the pulmonary circulation that leads to pulmonary edema. Choices B, C, and D do not align with the primary underlying disorder of pulmonary edema.

Correct Answer: D

Rationale: The correct answer is D because educating the client about the disease process and its limitations is crucial in managing Chronic Fatigue Syndrome (CFS). By understanding the disease, the client can make informed decisions regarding their lifestyle, activities, and self-care. This empowers the client to manage symptoms effectively and prevent exacerbations. Choice A is not the most important factor as simply avoiding aggravating the disease does not address the overall management of CFS. Choice B focuses solely on drug therapy, which is only one aspect of the client's management and may not provide significant improvement for all clients with CFS. Choice C, altering diet and environment, can be helpful but may not be the most important factor as understanding the disease process and limitations is essential for long-term management and quality of life.

Correct Answer: C

Rationale: The correct answer is C: Inform the registered nurse. This is the best course of action as the LPN should escalate the situation to a higher level of care by involving the registered nurse who can further assess the patient's concerns and provide appropriate interventions. A. Reassuring the patient may not address the underlying fear and may not be sufficient to alleviate their anxiety. B. Providing statistics about surgery death rates may further escalate the patient's fears and anxiety, causing more harm than good. D. Involving the family to comfort the patient may not address the patient's specific concerns and may not be within the family's scope of understanding or expertise to effectively address the situation. Informing the registered nurse allows for a more comprehensive assessment and appropriate intervention to address the patient's fears and concerns in a holistic manner.

Correct Answer: C

Rationale: The correct answer is C because performing chest physiotherapy (CPT) at least two hours after meals helps prevent aspiration during the procedure. This timing reduces the risk of vomiting or regurgitation of food during CPT, which could lead to aspiration pneumonia. Slapping the chest wall gently (A) may not effectively clear secretions. Using vibration techniques (B) is not typically recommended for routine CPT. Planning apical drainage at the beginning of the session (D) is not necessary as it is not a standard practice for CPT.