ATI RN
ATI Pharmacology Study Guide Questions
Question 1 of 5
Which of the following is most suitable for migraine prophylaxis in an otherwise healthy 30-year-old woman?
Correct Answer: C
Rationale: Migraine prophylaxis reduces attack frequency. Ergotamine treats acute migraines, not prophylaxis, risking vasoconstriction. Paracetamol relieves pain but doesn't prevent migraines. Propranolol, a beta-blocker, reduces migraine frequency via vascular and CNS effects, proven effective and safe in healthy adults. Carbamazepine suits trigeminal neuralgia, not migraines. Sumatriptan is acute, not preventive. Propranolol's efficacy makes it first-line, balancing prevention and tolerability.
Question 2 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 3 of 5
Which substance has the lowest rate of crossing renal tubular membranes and would therefore be excreted in the urine?
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 4 of 5
The nurse works with a physician who frequently prescribes benzodiazepines. The use of benzodiazepines in which patient would cause the nurse the most concern?
Correct Answer: A
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
Question 5 of 5
An important function of calcium is to
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.