ATI RN
ATI Pharmacology The Respiratory System Quizlet Questions
Question 1 of 5
Deficiencies in cyanocobalamin (B12) can result in
Correct Answer: B
Rationale: Cyanocobalamin, or vitamin B12, is essential for red blood cell production and neurological function, and its deficiency directly leads to pernicious anemia, a condition characterized by large, immature red blood cells due to impaired DNA synthesis. This occurs because B12 is crucial for folate metabolism and erythropoiesis, and without it, anemia develops, often accompanied by neurological symptoms like numbness or tingling. Pellagra, however, results from niacin (vitamin B3) deficiency, manifesting as dermatitis, diarrhea, and dementia-unrelated to B12's role. Rickets stems from vitamin D deficiency, causing bone deformities due to poor calcium absorption, not a B12 issue. Scurvy arises from vitamin C deficiency, leading to collagen breakdown and symptoms like bleeding gums, distinct from B12's hematological effects. Pernicious anemia stands out as the correct outcome because B12 deficiency disrupts bone marrow function, and it often requires pharmacotherapy, such as B12 injections, especially if absorption is impaired (e.g., due to lack of intrinsic factor). This specificity eliminates other conditions, highlighting B12's unique role in blood and nerve health.
Question 2 of 5
The nurse plans to administer medication to the preschool child. Which approach indicates the nurse has an understanding of growth and development?
Correct Answer: D
Rationale: Preschoolers (3-5) respond to simple explanations and swift action-e.g., 'This helps you feel better,' then give-matching their short attention and trust needs. Parents often calm, not hinder, cooperation. Play aids understanding, not just verbal. Restraint may be needed if uncooperative-age doesn't rule it out. Brief rationale and quick delivery suit developmental stage, minimizing distress.
Question 3 of 5
The 8-year-old patient is receiving methylphenidate (Ritalin). The patient's mother tells the nurse that he won't eat while on his medication. What is the best response by the nurse?
Correct Answer: B
Rationale: Methylphenidate curbs appetite-giving it post-meals and adding snacks offsets weight loss, per practical management. Depression isn't indicated-appetite loss is a known effect. Appetite stimulants aren't standard. Nutritionists help long-term, not acutely. Post-meal dosing balances efficacy and nutrition, per care.
Question 4 of 5
A 27-year-old medical student has recurrent sinusitis and takes an over-the-counter agent. Unfortunately, he fell asleep while taking his final examination of the anatomy course. Which of the following agents is most likely to cause this adverse effect?
Correct Answer: D
Rationale: Sinusitis treatment often involves OTC antihistamines. Diphenhydramine , an H1 antihistamine, causes sedation, explaining the student's sleepiness during the exam. Doxycycline , an antibiotic, doesn't sedate. Doxylamine , another sedating antihistamine, is possible but less commonly linked to sinusitis OTC use. Doxazosin , an α-blocker, isn't for sinusitis. Hydroxyzine (E) sedates but is prescription-based. Diphenhydramine's widespread OTC availability and drowsiness side effect fit the scenario, impacting the student's performance.
Question 5 of 5
A 54-year-old man with an attack of gout approximately 4 months ago was placed on allopurinol. He now presents to his primary care physician complaining of a skin rash on his arms. Allopurinol was discontinued 3 months ago. What is the most likely explanation for this finding?
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.