ATI LPN
ATI LPN Pharmacology Quiz Questions
Extract:
Question 1 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 2 of 5
Which of the following stimulates the pancreas to secrete insulin?
Correct Answer: B
Rationale: Hyperglycemia (elevated blood glucose) triggers pancreatic beta cells to secrete insulin to lower glucose levels. Ketoacids result from low insulin, hypoglycemia reduces insulin secretion, and glucagon raises glucose, not directly stimulating insulin.
Question 3 of 5
The nurse needs to monitor a client's blood sugar after administration of insulin regular (Humulin R). When does the nurse expect to assess the client's blood sugar based on the peak action of the medication?
Correct Answer: D
Rationale: Regular insulin (Humulin R) peaks at 2–4 hours, when the risk of hypoglycemia is highest, necessitating blood sugar monitoring. Other time frames correspond to onset (15–30 min) or later duration, not peak effect.
Question 4 of 5
A nurse is preparing to administer vitamin K 1 mg IM to a newborn. Available is vitamin K injection 1 mg/0.5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: 0.5
Rationale: Using the formula: Volume (mL) = Dose (mg) ÷ Concentration (mg/mL), and noting concentration is 1 mg/0.5 mL (or 2 mg/mL), for a 1 mg dose, Volume = 1 ÷ 2 = 0.5 mL, which is already to the nearest tenth.
Question 5 of 5
A nurse is preparing to administer ondansetron 4 mg IM stat. The amount available is ondansetron for injection 2 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Correct Answer: 2
Rationale: Using Volume (mL) = Dose (mg) ÷ Concentration (mg/mL), for a 4 mg dose and 2 mg/mL concentration, Volume = 4 ÷ 2 = 2 mL, a whole number as required.