ATI LPN
ATI LPN Pharmacology Quiz Questions
Extract:
Question 1 of 5
Children younger than 9 years should not be given tetracyclines because:
Correct Answer: D
Rationale: Tetracyclines deposit in developing teeth, causing permanent discoloration in children under 9. They can also affect bone growth, but tooth discoloration is the primary concern. Dehydration and photosensitivity are not age-specific tetracycline issues.
Question 2 of 5
Which hormones that regulate blood glucose levels are secreted by the pancreas? (Select all that apply.)
Correct Answer: A,D
Rationale: Insulin lowers blood glucose by facilitating cellular uptake, and glucagon raises it by promoting glycogenolysis, both secreted by the pancreas. Growth hormone and antidiuretic hormone come from the pituitary, and estrogen from the ovaries, none directly regulating blood glucose from the pancreas.
Question 3 of 5
A patient at a rehabilitation center is prescribed erythromycin. The nurse is reviewing the patient's medication list, checking to see if there are medications that should not be taken with this antibiotic. One medication is found. What medication should not be taken with erythromycin?
Correct Answer: A
Rationale: Erythromycin inhibits the metabolism of statins like lovastatin by affecting the CYP3A4 enzyme, increasing the risk of myopathy and rhabdomyolysis. Lasix, ibuprofen, and lisinopril have no significant interactions with erythromycin, making them safe to co-administer.
Question 4 of 5
Which hormone released by the Islets of Langerhans, acts to increase blood glucose?
Correct Answer: A
Rationale: Glucagon, secreted by pancreatic alpha cells in the Islets of Langerhans, raises blood glucose by promoting glycogenolysis and gluconeogenesis. Insulin, also from the Islets, lowers glucose, making glucagon the correct answer.
Question 5 of 5
Acquired resistance is:
Correct Answer: D
Rationale: Acquired resistance occurs when microbes develop mechanisms to evade antibiotics after exposure, rendering drugs ineffective. The other options describe antibiotics, pathogenicity, or virulence, not resistance.