Correct Answer: A

Rationale: The correct answer is A: Positive family history. Pernicious anemia is an autoimmune condition where the body attacks its own intrinsic factor, leading to vitamin B12 deficiency. Genetic predisposition plays a significant role in the development of pernicious anemia. Family history is a key risk factor as individuals with a family history of pernicious anemia are more likely to develop the condition. Summary of why the other choices are incorrect: B: Infectious agents or toxins do not directly cause pernicious anemia, although they can lead to other types of anemia. C: Acute or chronic blood loss can result in iron-deficiency anemia, not pernicious anemia. D: Inadequate dietary intake of vitamin B12 can lead to vitamin B12 deficiency anemia, but pernicious anemia specifically involves the body's inability to absorb B12 due to intrinsic factor deficiency, not dietary intake alone.

Correct Answer: C

Rationale: The correct answer is C: Ineffective cerebral tissue perfusion. In the late stage of AIDS, the client is at risk for neurological complications, including AIDS-related dementia due to decreased blood flow to the brain. This nursing diagnosis takes the highest priority as it directly addresses the client's impaired brain perfusion, which can lead to serious cognitive and functional deficits. Prioritizing this diagnosis ensures timely interventions to optimize cerebral blood flow and prevent further deterioration. Summary: A: Self-care deficient: Bathing/hygiene - important but not the highest priority compared to addressing neurological complications. B: Dysfunctional grieving - while emotional support is essential, it is not the priority when dealing with a life-threatening physiological issue. D: Risk for injury - while important, it is secondary to addressing the underlying cause of the dementia in this scenario.

Correct Answer: B

Rationale: The correct answer is B because it directly reflects the client's progress in physical activity, a key indicator of recovery post-myocardial infarction. Walking 500 meters without chest pain shows improved cardiovascular function and exercise tolerance. Vital signs and lab results from admission (A) are important for initial assessment but not for ongoing evaluation. Physician notes (C) may provide insights but do not directly measure the client's progress. Medications prescribed (D) are important but do not reflect the client's specific improvement in physical activity.

Correct Answer: A

Rationale: The correct answer is A: emergency. In this scenario, the patient is experiencing difficulty in urination due to benign prostate hyperplasia (BPH), a condition that can lead to serious complications like acute urinary retention. Transurethral resection of the prostate (TURP) is a surgical procedure that is used to relieve the obstruction caused by BPH. Given the urgency of the situation and the potential for acute complications, the surgery needs to be performed immediately to prevent further harm to the patient's health. Classifying this condition as an emergency ensures prompt intervention and prioritizes the patient's well-being. Summary: - B: C.urgent (not correct): While the surgery is time-sensitive, it does not require immediate intervention like in an emergency situation. - C: elective (not correct): Elective surgeries are planned in advance and are not typically performed in urgent situations like this one. - D: required (not correct): While the surgery is necessary for the patient's condition

Correct Answer: B

Rationale: The correct answer is B: The waiting area with the television turned off. This setting provides a quiet environment, minimizing distractions for the patient with a hearing deficit. It allows the nurse to communicate effectively by speaking clearly and facing the patient directly. Option A is incorrect because a closed door may not be enough to reduce background noise. Option C is incorrect as pain medication may affect the patient's ability to concentrate. Option D is incorrect because the occupational therapist working on leg exercises may create additional noise and distractions.